The Johnson group explores a variety of topics in synthetic macromolecular chemistry and surface chemistry.

THE JOHNSON RESEARCH GROUP

About Jeremiah A. Johnson:

Jeremiah Johnson Photo

Contact Information:

Department of Chemistry
Massachusetts Institute of Technology
77 Massachusetts Avenue, Room 18-296
Cambridge, MA 02139-4307 USA

Phone: (617) 253-1819

Email: jaj2109@mit.edu



Experience:

2016-current
Firmenich Career Development Associate Professor,
Massachusetts Institute of Technology

2015-2016
Firmenich Career Development Assistant Professor,
Massachusetts Institute of Technology

2011-2016
Assistant Professor of Chemistry,
Program in Polymers and Soft Matter (PPSM) Faculty,
Massachusetts Institute of Technology

2009-2011
Beckman Institute Postdoctoral Scholar with Professors Robert H. Grubbs and David A. Tirrell, California Institute of Technology

2005-2007
Graduate research with Professor M.G. Finn,
The Scripps Research Institute, summers

2004-2009
Graduate research with Professors Nicholas J. Turro and Jeffrey T. Koberstein,
Columbia University

2001-2004
Undergraduate research with Karen L. Wooley,
Washington University in St. Louis

Education:

2009
Columbia University,
Ph. D., Chemistry

2004
Washington University in St. Louis, B.S.,
Biomedical Engineering and Chemistry

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Latest News:

15 September 2016: Minjiang, Rui, and Ken's paper on quantifying how topological defects impact the elasticity of polymer networks published online in Science. Congrats to the team! Click on the image or links below to see the paper, read the MIT News highlight, and watch our video on loops in polymer networks!


Read the paper here.

See MIT News story here.
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14 September 2016: Jonathan's paper with Peter Bruno and Mike Hemann (MIT Dept. of Biology) on using RNAi signatures to investigate the mechanism of action of 3-drug conjugated BASP nanoparticles built from platinum crosslinkers published online in JACS. Congrats to Jonathan and the whole BASP team! Click on the image below to read the paper.


See MIT News story here.

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25 August 2016: Alex and Julia's paper on the role of polymer chain length and branching in the structure and properties of polyMOCs published online in Macromolecules. Congrats!

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1 September 2016: Ken and Mingjiang's paper on the self-assembly of "A-branch-B" diblock bottlebrush copolymers published oline in JACS. Congrats Ken and Mingjiang!

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17 August 2016: Our work on structurally controlled polymers using Iterative Exponential Growth (IEG) highlighted in a wonderful feature article by Mark Peplow in Nature:


The Plastics Revolution: How Chemists are Pushing Polymers to New Limits.

16 August 2016: Yufeng's paper on "Block Co-PolyMOCs" published in JACS. Congrats Yufeng!

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3 August 2016: Welcome to new postdocs Dr. Wenxu Zhang and Dr. Mingjun Huang, as well as visiting professors Xingui Li and Meirong Huang.


1 August 2016: Former group member Dr. Yufeng Wang begins his new position as Assistant Professor of Chemistry at The University of Hong Kong. Congrats Yufeng!


UHK faculty page: Prof. Yufeng Wang

21 July 2016: Dr. Matt Golder wins an IUPAC-SOLVAY International Award for Young Chemists for his PhD thesis work with Prof. Ramesh Jasti. Congrats Matt on this very prestigious award!


IUPAC Announcement Here.

21 July 2016: Yivan's paper on IEG synthesis and bulk self-assembly of uniform diblock copolymers published online in JACS. Congrats Yivan!

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15 July 2016: Former PhD student Dr. Alex Zhukhovitskiy wins a Life Sciences Research Foundation postdoctoral fellowship for his upcoming work with Prof. Dean Toste at UC Berkeley. Congrats Alex on this very prestigious fellowship, and best of luck at Berkeley!

5 July 2016: The group welcomes visiting students Yoshiki Shibuya, Wencong Wang, and Seth Freedman!

1 July 2016: Alex's paper on inserting persistent carbenes into Si-H bonds in molecules, nanoparticles, and planar surfaces appears online in JACS. Congrats Alex!

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1 July 2016: Former group member Dr. Mingjiang Zhong begins his new position as Assistant Professor of Chemical Engineering at Yale University. Congrats Mingjiang!


Yale faculty page: Prof. Mingjiang Zhong

1 July 2016: Former group member Dr. Jonathan C. Barnes begins his new position as Assistant Professor of Chemistry at Washington University in St. Louis. Congrats Jonathan!


Barnes Group Website

14 June 2016: The group welcomes new post-doc Dr. Farrukh Vohidov! See the group page for more info.

10 June 2016: Congratulations to Dr. Alex Zhukhovitskiy, the group's first PhD!!!

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10 June 2016: The group welcomes visiting students Yasmeen AlFaraj and Yongsheng Gao! See the group page for more info.

7 May 2016: Paper with Rui Wang, Brad Olsen, and Alfredo Alexander-Katz on "Universal Cyclic Topology in Polymer Networks" appears in Physical Review Letters. Congrats to all and especially Rui! In this work, Rui was able to show that all loop defects in polymer networks are kinetically linked, such that if we can measure one (which we can) we can measure them all. Truly outstanding!

Click Here to Read the Paper.

1 April 2016: Collaborative paper with Anna Balazs using simulations to study phase separation in our photo-growth gels published in Polymer Chemistry!

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15 March 2016: Mao and Mingjiang's review on light-controlled radical polymerization appears online in Chemical Reviews!

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25 February 2016: Jonathan Barnes accepts a position as Assistant Professor in the Department of Chemistry at Washington University in St. Louis! Congrats! See Announcement Here.

19 February 2016: Mao and Mingjiang's Chemical Reviews article on Photo-controlled Living Radical Polymerization is accepted for publication! Details to follow. Congrats!

16 February 2016: The group welcomes new visiting student Alan Enciso and new UROP Cathy Zhang!

14 February 2016: Welcome to two new group members: Shidong (Will) Deng (visting undergraduate student from Tianjin University) and Prof. Jun Lin (visiting professor from Yunnan University).

13 January 2016: IEG+ paper highlighted in Synfacts!


See Highlight Here.

4 January 2016: Jeremiah receives the 2016 Young Talent Award from the organizers of the 1st International Conference of Molecular Engineering of Polymers (MEP-1). This exciting conference will be held in October 2016 in Shanghai. Thank you to the MEP-1 organizers and, in particular, Prof. Jiandong Ding.

24 December 2015: The Johnson Group's work is highlighted in the Boston Globe's STAT News. See the article here: "Three People to Watch in Kendall Square in 2016."

9 December 2015: Yufeng's baby boy Charles Hanyou Wang is born! Congrats Yufeng!

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1 December 2015: Ken and Mingjiang's paper on counting primary loops in tetrafunctional and mixed-junction networks prepared using click chemistry appears online in Macromolecules!

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16 November 2015: Alex and Mingjiang's paper on high branch functionality and loop rich PolyMOCs appears online in Nature Chemistry! Congrats!


MIT News story here.

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12 November 2015: The group welcomes back Julia Zhao! Once a visiting undergraduate student, now a PhD student. Welcome Julia!

5 October 2015: New post-doc Matt Golder joins the group! See group page for more information. Welcome Matt!

1 October 2015: Alex and Mingjiang's paper on highly branched and loop rich "Polymer Metal-Organic-Cage" (PolyMOC) gels is accepted for publication in Nature Chemistry! Details to follow. Congrats Alex and Mingjiang, and thanks to all of our collaborators on this work!

22 September 2015: Alex and Michelle's review article on carbenes in surface chemistry is published online in Chemical Reviews! A lot of very hard work went into this fantastic paper. Congrats!

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14 September 2015: IEG+ paper highlighted by Chemistry World!


See Story Here.

10 September 2015: Jeremiah has joined the editorial board of Polymer Chemistry!


More Information Here.

7 September 2015: Jonathan's paper on the synthesis of stereo- and sequence-controlled polymers by iterative exponential growth plus side-chain functionalization (IEG+) appears online in Nature Chemistry! Congrats Jonathan!

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19 August 2015: Flow-IEG paper highlighted by C&EN@ACS Boston 2015 and C&E News, Science and Technology, News of the Week!


See Story Here.

12 August 2015: The joint Johnson/Van Humbeck group volleyball team (Jeremiah was a Van Humbeck Whale) takes 3rd place in the Chemistry Department summer beach volleyball league!

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12 August 2015: Frank's paper on continuous-flow iterative exponential growth (flow-IEG) of unimolecular polymers appears in PNAS! Congrats Frank!

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17 June 2015: Michelle's paper on PEGylated-NHC functionalized gold nanoparticles appears in JACS! Congrats Michelle!

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30 April 2015: Mao and Michelles's paper on using 10-phenylphenothiazine as an organic photo-redox catalyst to mediate visible-light controlled radical polymerization from a trithiocarbonate appears online in ACS Macro Letters! Congrats!

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20 April 2015: Jonathan wins an IUPAC-SOLVAY International Award for Young Chemists for his PhD thesis work with Prof. Fraser Stoddart. Congrats Jonathan on this very prestigious award!


IUPAC Announcement Here.

9 April 2015: Ken's paper on combining tetrazine-metal coordination and Diels-Alder reactions for the synthesis of functional supramolecular gels appears online in ACS Macro Letters! Congrats Ken!

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2 April 2015: The group welcomes new post-doc Dr. Qixian Chen!

1 April 2015: Congrats to Hung for receiving an NSF Graduate Research Fellowship!

17 March 2015: Mao's paper on improving photo-controlled radical polymerization from trithiocarbonates using continuous flow techniques appears online in Chemical Communications Congrats Mao!

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4 March 2015: NHC cycloelimination paper selected for the cover of Chem. Euro. J.!


See Cover Profile Here.

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20 February 2015: Alex and Julie's paper on cycloelimination of NHCs appears online in Chem. Euro. J. Congrats!

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13 February 2015: Michelle receives a WIC Travel Award for support of her trip to the ACS National Meeting in Denver, CO. Congrats Michelle!

15 January 2015: The group welcomes a new UROP: Katherine Young!

18 November 2014: Molly and Jessica's paper on nitroxide-based branched bottlebrush polymers for dual-modality imaging in vivo appears in Nature Communications. Congrats! Thanks to the Rajca group at University of Nebraska and the Hammond group here at MIT for the fruitful collaboration.


MIT News story here.

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13 November 2014: The group welcomes four new PhD students: Yuwei Gu, Gihan Hewage, Yivan Jiang, and Hung Nguyen!

15 October 2014: The group welcomes two new post-docs: Dr. Mao Chen and Dr. Yufeng Wang!

3 October 2014: The group successfully escapes from a room with a zombie.

1 October 2014: Several new faces in the lab! Welcome Dr. Mao Chen, Julie Geng, and Vivian Tian!

29 August 2014: Alex is recognized with a prestigious American Chemical Society Division of Organic Chemistry Graduate Fellowship. Congrats Alex!

12 August 2014: The lab receives a MIT-DuPont Alliance grant for the synthesis of "perfect polymers". Thank you DuPont!

8 August 2014: Angela and Yan's paper on the synthesis of pH sensitive BASP nanoparticles is accepted for publication in ACS Macro Letters. Congrats!

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20 June 2014: The group welcomes visiting CMSE intern Julia Zhao!

11 June 2014: The group welcomes visiting MSRP student Leila Terrab!

10 June 2014: The lab receives NIH support for the development of organic radical MRI contrast agents. Thank you NIH.

9 June 2014: The lab receives MIT Lincoln Labs ACC support for the development of new materials for photo-controlled 3D printing. Thank you ACC.

29 May 2014: Huaxing, Eva, and Jenny's article on the application of crossover experiments to the analysis of molecular defects in polymer networks appears online in JACS!

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27 May 2014: Alex receives a prestigious 2014 Intel PhD Fellowship! Congrats Alex!!

7 May 2014: Jeremiah receives a 2014 DuPont Young Professor Award! Thank you DuPont!


Official Press Release Here.

18 April 2014: Jeremiah receives a 2014 NSF CAREER Award! Thank you NSF!

10 April 2014: Yan and Jenny's work on the synthesis of multi-drug-loaded nanoparticles for ratiometric triplex combination cancer therapy appears in JACS. Congrats Yan and Jenny!


C&E News story here.
JACS Spotlight story here.
MIT News story here.

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7 April 2014: The group welcomes new visiting student Kojiro Fujimura from Kyoto University!

20 March 2014: Jeremiah receives a 2014 3M Non-Tenured Faculty Award. Thank you 3M!


MIT News story here.

18 March 2014: The group receives a MIT Energy Initiative (MITEI) Seed Fund Grant for the development of hybrid metal-organic polymeric materials with Prof. Niels Holten-Anderson's group in MIT's Department of Materials Science and Engineering. Thank you MITEI.


MIT News story here.

20 February 2014: Jonathan receives 2014 Life Sciences Research Foundation (LSRF) Postdoctoral Fellowship! Congrats Jonathan!

18 February 2014: Jeremiah receives 2014 Sloan Research Fellowship! Also congrats to colleagues Mircea Dinca, Bradley Olsen, and the rest of the MIT Sloan Fellows!


New York Times announcement here.
MIT News story here.

14 February 2014: The group welcomes new post-doctoral scholar Dr. Jonathan Barnes!

6 February 2014: The groups receives an Air Force Young Investigator Research Program (YIP) Grant to work on the synthesis and self-assembly of branched bottlebrush copolymers. Thank you AFOSR!

6 January 2014: The group welcomes visiting student Johanna Ertl!

1 January 2014: The group welcomes two new undergraduate researchers Chew and Katherine!

15 November 2013: The group welcomes new graduate student Deborah Ehrlich. Welcome Deborah!

15 October 2013: The group welcomes new post-doc Dr. Mingjiang Zhong. Welcome Mingjiang!

11 October 2013: Jenny and Angela's JoVE article titled "Particles Without a Box" is published online. Go see Jenny and Angela make a nice series of our PEG-BASPs HERE .

7 October 2013: Alan and Angela's paper that describes the synthesis of PS-PLA Miktoarm BASPs was accepted as part of a special issue of Macromolecular Rapid Communications focused on cutting-edge polymer synthesis. Congrats Alan and Angela!

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30 September 2013: Alan and Yan's paper that describes the "Brush-first and Click Method" for photo-triggered drug delivery appears online as part of a special issue of Photochemistry and Photobiology dedicated to the memory of Prof. Nick Turro.

15 September 2013: Jeremiah was selected as an ACS PMSE young investigator. He will present as part of the PMSE Young Investigator Symposium at the Spring 2014 National ACS meeting in Dallas, TX.

14 September 2013: The Johnson group has received a grant from the National Science Foundation (NSF) under the "Designing Materials to Revolutionize and Engineer Our Future" (DMREF) program. Our project will focus on the design, synthesis, and computational analysis of polymer networks for emerging applications. This project will continue our strong/ongoing collaboration with Prof. Bradley Olsen's group in Chemical Engineering at MIT. Thank you NSF!

23 August 2013: Alexandra's "tetrazine-norbornene Diels-Alder model networks" paper appears in Macromolcular Symposia as part of a special issue highlighting the 2012 Polymer Networks Group conference in Jackson Hole, WY. Congrats Alexandra!

Note that while our article was in press, Professor Kristi Anseth's group published a related paper on tetrazine-norbornene hydrogels for 3D cell culture. See Kristi's excellent paper here: link.

20 August 2013: Congrats to Ken, Molly, and Angela for winning Department of Chemistry Awards for Outstanding Teaching!

20 August 2013: The Johnson and Surendranath Labs enjoyed an afternoon of intense laser tag action:

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17 June 2013: The group welcomes two visiting students: Marco Messina from Mark Olsen's lab at Texas A&M and Tianyuan (Ryan) Liu from Roxbury Community College. It's great to have you both!

3 June 2013: Alex's JACS paper receives media attention:

Chemical and Engineering News: "Carbene For Gold Surfaces"

MIT News: "A New Kind of Chemical Glue"

30 May 2013: Carbene surfaces featured as the MIT homepage spotlight!

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13 May 2013: Alex's "addressable carbenes for gold surfaces" JACS paper appears online. Congrats Alex!

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3 May 2013: Discussion of our "Network Disassembly Spectrometry" (NDS) method in PNAS:

"Quantifying primary loops in polymer gels by linear viscoelasticity" - F. J. Stadler


"Reply to Stadler: Combining network disassembly spectrometry with rheology/spectroscopy" - B. D. Olsen and J. A. Johnson


23 April 2013: "Photo-growth" paper highlighted in Nature Chemistry:

"Polymer Chemistry: Rooftop Reactions"


27 February 2013: Huaxing's photo-growth paper highlighted by various media outlets:

Materials Research Society Materials360

Chemistry Views

SpectroscopyNOW

2 February 2013: The Johnson Group on their first somewhat annual ski trip:

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18 January 2013: Huaxing's "photo-controlled gel growth" Angewandte Chemie paper appears online. Congrats Huaxing!

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16 January 2013 : Two bits of great news:

(1) Huaxing's "photo-controlled gel growth" paper chosen as a "Hot Paper" by the editors of Angewandte Chemie: Angewandte "Hot Papers"

(2) Huaxing's PNAS paper on counting loops highlighted in Nature News and Views: Nature News and Views

27 November 2012: "Brush-first" paper highlighted in SYNFACTS .

15 November 2012: The group welcomes four 1st-year graduate students: Angela, Ken, Michelle, and Molly!

9 November 2012: Counting loops by "S/L Method" paper appears in PNAS (click on the image below to access the paper). Congrats Huaxing, Jen, and Alexandra!


"Counting Loops" highlighted in MIT news!


"Counting Loops" highlighted in Nature!

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4 October 2012: "Pseudo-alternating polymers" paper appears in Macromolecules. Congrats Alan and Alex!

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6 September 2012: "Brush-first" paper appears in JACS. Congrats Jenny, Alan and Alex!

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19 July 2012: The Johnson Group beach volleyball team:

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1 June 2012: We welcome Eva-Maria Schoen to the group! Eva-Maria is visitng from Professor David Diaz Diaz's group. We are thrilled to have her here for the summer!

20 May 2012: The Johnson group celebrates their 6-month anniversary with an exciting day of food, drink, and laser tag.

8 May 2012: Johnson group journal blog launched. Click HERE to see what the group is reading.

30 March 2012: Alan O. Burts receives an NSF graduate fellowship. Alex receive's a Morse Travel Grant for the Fall 2012 ACS Meeting in Philadelphia. Congrats Alan and Alex!

17, 24 February 2012: The Johnson group celebrates the first annual Flory Day(s)! Each student gave a presentation on fundamental aspects of synthetic polymer chemistry. Topics included chain and step-growth polymerization, gelation and network formation, controlled polymerization processes, and polymer architectures. Fun was had by all.

11 November 2011: Welcome first year graduate students Alexandra, Jenny, Alan, Alex, and Jessica to the group! Also, welcome Huaxing Zhou (post-doc) and Elisha Yadgaran (UROP)! First group meeting today.

31 October 2011: Paper that describes EPR studies of nitroxide-labeled brush polymers appears in JACS.

8 September 2011: Classes begin! For info on Jeremiah's course, 5.53 Molecular Structure and Reactivity, go here .

15 August 2011: We welcome Jen Woo to the group!

11 July 2011: The Johnson Group begins! We welcome first year MIT graduate students Melissa Donaldson and Alan Burts!

9 June 2011: Thanks to Tim Swager for inviting Jeremiah to the NSF-sponsored "Future Faculty Workshop: Diverse Leaders of Tomorrow," which was held June 19-21 at the MIT Endicott House. For more information on this year's workshop click here .

1 July 2011: The Johnson group begins!

We seek to cultivate a vibrant and intellectually engaging atmosphere: an “incubator for discovery.”

Research:

The solutions to many of mankind’s greatest problems: prevention and treatment of disease, development of alternative energy sources, preservation of natural resources, etc., will rely on the interdisciplinary application of synthetic chemistry. The Johnson laboratory seeks creative, macromolecular solutions to problems at the interface of chemistry, medicine, biology, and materials science. Materials synthesis is approached in an analogous manner to natural-products synthesis; an interesting target structure is chosen and a synthetic scheme is designed to access that structure as efficiently as possible. The targets are designed de novo from careful consideration of the specific needs of a given application and with a particular emphasis on creative architectural design and function. The tools of traditional organic and organometallic synthesis, synthetic polymer chemistry, photochemistry, surface science, and biopolymer engineering are combined to realize the designs.

Just as natural-products chemists must often invent new reaction methodologies to access complex structures and their corresponding derivatives, the Johnson lab will seek to develop new methodologies for the construction and modification of complex material libraries. Iterative library synthesis, function-based screening, and design optimization will ultimately yield basic knowledge, such as structure-function relationships for materials in specific applications, and new materials-based technologies that outperform current alternatives. Some examples of target material platforms and their associated applications are: (1) novel, nanoscopic branched-arm star polymer architectures for in vivo drug/gene delivery and supported catalysis, (2) hybrid synthetic-natural hydrogels for correlation of the effects of network microstructure on cell response, and (3) new types of semiconducting organometallic polymers and polymer films for sensing, supported catalysis, and energy conversion. Taken as a whole, our research focuses on molecular design in three primary areas: nano-scale materials synthesis, macro-scale materials synthesis, and development of new chemical methods for modifying interfaces between bulk and nanoscale objects (surface chemistry).

Current Members:

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Dr. Robinson Anandakathir
Visiting Scientist

Greetings! I was born and raised in southern India. I received my B.S. and M.S. degree in Chemistry from Bharathidasan University, India. Later I moved to Taiwan and obtained my Ph.D. (Organic Chemistry) from National Taiwan University in 2003 under the supervision of Prof. Jim-Min Fang where my research was focused on Organic synthesis and Nanomaterials. Then, I joined as a postdoctoral fellow in University of Massachusetts Lowell and worked on several projects with Prof. Long Chiang, Prof. Jayant Kumar and Prof. Bridgette Budhlall. My research at UML was focused on synthesis of fullerene derivatives, development of semipermeable polymer membranes and polymer based chemical sensor for detection of explosive and chemical warfare nerve agents. In August 2015, I joined Samsung Electronics as Research Engineer and Prof. Johnson’s group as visiting scientist where my research will be focused on developing polymer electrolytes for advanced electrochemical energy storage systems. Research aside, I love traveling, reading, working with Christian ministries and exploring North America with my wife and sons.

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Dr. Jonathan Barnes
Postdoctal Scientist

See Jonathan's website. I was born and raised in Louisville, KY. I obtained my BS/MS degrees from the University of Kentucky under the tutelage of Robert Grossman. After graduation, I worked for a biotech company in Los Angeles ‒ Synedgen,Inc. ‒ developing novel antimicrobial derivatives of chitosan and biocompatible, hemostatic foams for the US military. Heading back to graduate school, I obtained my PhD at Northwestern University (September 2010 ‒ February 2014) under the supervision of Sir Fraser Stoddart where my research primarily revolved around the investigation of viologen molecular recognition in the form of synthetic molecular receptors and radical-based integrated materials, in addition to organic-inorganic nanoparticle-based drug release systems. I am now a Life Sciences Research Foundation postdoctoral fellow in the laboratory of Jeremiah Johnson at the Massachusetts Institute of Technology where I am excited to be able to carry out research in the areas of polymer science and drug delivery. Chemistry aside, I love watching movies, reading, playing basketball, and exploring Boston with my wife and son. Also, I am an avid Lakers and UK basketball fan. Go CATS!

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Dr. Mao Chen
Postdoctoral Scientist

I grew up in Chongqing, a city famous for hot pot in China. After receiving B.S. degree in Wuhan University, I did my Ph.D. research focused on organic synthesis in the same university under the supervision of Prof. Aiwen Lei. Then, I joined Prof. Stephen L. Buchwald group at MIT for my postdoctoral study of continuous-flow manufacturing from 2012 to 2014. In Oct. 2014, I joined Prof. Jeremiah A. Johnson Group as a postdoctoral scientist, where I will be able to explore polymerization.

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Dr. Qixian Chen
Postdoctoral Scientist

I was born and raised in Dalian, a fashionable and pleasant city located on the tip of Liaodong Peninsula in northeastern China. After completion of my undergraduate education in the field of Material Science and Engineering in Dalian University of Technology, I started graduate research under the supervision of Prof. Kazunori Kataoka at The University of Tokyo, Japan. My research focused on the design of multi-functional polymers as synthetic nucleic acids & anti-cancer drug delivery carriers for treatment of intractable diseases, e.g., pancreatic cancers and Alzheimer's disease. In Apr. 2015, I joined Prof. Jeremiah A. Johnson group as a postdoctoral scientist to pursue translation of new chemistry platforms into biomedical applications.

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Deborah Ehrlich
Graduate Student

I am a local girl who grew up ~20 miles away in Natick, MA. I received a B.S. in chemistry from the University of Massachusetts, Amherst. During my undergraduate education, I worked in the Coughlin group synthesizing photo-cleavable polymers and with Prof. Ramanathan Nagarajan modeling peptide adsorption to lipid bilayers. I am very excited to continue studying polymer chemistry in the Johnson group! In my free time, I enjoy making a mess in the kitchen, playing the oboe, and reading.

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Seth Freedman
Visiting Student

I am from Newton, MA, and I will be graduating from Newton North High School in the spring of 2017. I have always enjoyed Chemistry and I plan on continuing my education in Chemistry as I head to college and beyond. In my spare time I enjoy baking, running, and spending time outdoors.

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Yongsheng Gao
Visiting Student

Originally from Yulin Shaanxi, a small city beside the Yellow River in China, I received my B.E. and M.E. degree in Materials Science and Engineering at Harbin Institute of Technology (HIT), China. In 2013, I started my graduate research in polymeric biomaterials under the supervision of Prof. Wenxin Wang at University College Dublin (UCD), Ireland. My research focus on the synthesis of novel structured multifunctional polymers and their biomedical applications as gene delivery vector and wound adhesive hydrogel. From June 2016, I will work as a visiting researcher in Prof. Jeremiah A. Johnson's group to synthesize and characterize a newly developed polymeric gel.

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Dr. Matthew Golder
Postdoctoral Scientist

Matt was raised in America’s largest town, Framingham, MA, before heading to the University of Rochester to earn his BS in Chemistry. While in upstate New York, he conducted research in Prof. Patrick Holland’s lab, was a member of the swim team, and became proficient in hiking across a snowy campus. He was also a DAAD-RISE Scholar with Prof. Stefan Hecht in Berlin, Germany where he first became interested in organic materials. Matt moved back to Massachusetts in 2010 to begin graduate school at Boston University with Prof. Ramesh Jasti. Later, he moved with the group to the University of Oregon where he obtained his PhD in 2015. During his doctoral studies, Matt’s research was focused on the organic synthesis and characterization of small molecule carbon nanotube fragments. He joined Prof. Jeremiah Johnson’s group in October 2015 to apply his passion for making molecules and materials towards broad problems in polymer chemistry. In his free time, Matt enjoys shooting photos, cooking, exploring the gym, and travelling.

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Yuwi Gu
Graduate Student

I was raised in Ningbo, a beautiful coastal city in China. I received my B.S. in Chemical Biology from Tsinghua University (Beijing, China). In my undergraduate education, I worked in Prof. Huaping Xu’s lab synthesizing tellurium-containing polymers as drug-delivery vehicles (Believe it or not, they are actually quite bio-compatible!). In 2013, I took a summer research position in Prof. Steve Granick’s lab at University of Illinois at Urbana–Champaign, where I was trained as a polymer physicist and finally fell in love with polymer physics. In the Johnson group, I’m excited to explore uncharted territory at the interface between hydrogel chemistry, gelation physics, and even cell migration. Let’s wish me good luck.

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Prof. Xingui Li
Visiting Professor

I received my Ph.D. degree in China Textile University (Current: Donghua University) in Shanghai in 1989. I was a visiting scholar of 1) Harvard University in Prof. Roy G. Gordon’s group in 2004-2005, 2) University of California at Los Angeles in Prof. Richard B. Kaner’s group in 2014, 3) University of Cambridge in Dr. R. Vasant Kumar’s group in 2012 and Prof. Eugene M. Terentjev’s group in 2013, 4) University of Oxford in Prof. Mark G. Moloney’s group in 2008 and 2009, and 5) Technical University of Berlin in Prof. Jurgen Springer’s group in 1999-2000. I have been a full professor since 1993 and Chang-Jiang scholar since 1999. My research has focused on molecular design and synthesis of new conducting polymers and their nanomaterials with attracting multifunctionality including strong adsorbability toward heavy metal ions, recovery of noble metals, tricolor electrochromism, fluorescent emission and its amplified quenching for sensitively sensing metal ions and explosives for applications as electronic materials, nanosorbents toward metal ions, chemosensor, and ion-selective electrode sensor. I joined Prof. Jeremiah Johnson’s group in July 2016, where I further investigate the synthesis of novel conjugated conducting polymers emitting strong color fluorescence that is remarkably quenched for ultrasensitive metal-ion sensors. I enjoy healthy living and outdoor exercising including stand upside down and chinning up on horizontal bar.

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Dr. Mingjun Huang
Postdoctoral Scientist

I grew up at Jiangxi Province in middle part of China. After receiving my B.S. degree majoring in Chemistry in Peking University, I continued to pursue the Ph.D degree in the Department of Polymer Science at the University of Akron (UA) from 2010 to 2015, under the supervision of Dr. Stephen Z.D. Cheng. My primary research interests in UA focused on highly efficient synthesis of hybrid giant molecules combing controlled/living polymerization and “click" reactions and self-assembly behavior studies of hierarchical mesophases at nanoscale. From June 2016, I joined the groups of Profs. Yang Shao-Horn and Jeremiah Johnson as a joint postdoctoral fellow, where I will be able to explore interesting polymer chemistry and electrochemical energy materials studies.

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Yivan Jiang
Graduate Student

I grew up in the town of Stow, MA famous for its apple farms. I got my BA in Biochemistry from Columbia University where I learned a great deal in the lab of Luis Campos. There, I developed an avid interest in polymer chemistry and its various applications in photovoltaics, energy storage, and gene transfection. Now, I'm excited to be a graduate student back in my home state of Massachusetts. In the Johnson group, I aim to further my understanding of macromolecular research through studying polymerization techniques and systems for drug delivery.

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Ken Kawamoto
Graduate Student

Ken studied chemistry and biology at Cornell University and graduated with a BA in May 2012. Although his undergraduate research was in small molecule synthesis, he is interested in polymer chemistry and counting primary loops. He is also an amateur powerlifter, likes to slackline, and enjoys going to BSO performances.

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Julie Kim
Graduate Student

Raised in McLean, Virginia, Julie is currently a sophomore at MIT majoring in Biological Engineering. As a pre-med student, she is interested in research with medical implications. She first UROPed at the Koch Institute in Dr. Peter Ghoroghchian’s lab, synthesizing upconverting rare-earth metal doped nanoparticles used for imaging tumors. Now as part of the Johnson group, she is excited to explore nanoparticles from a chemistry perspective. Outside of academics, Julie enjoys watching football, being involved in MIT Asian Christian Fellowship, and shooting for MIT’s Sport Pistol Team.

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Prof. Meirong Huang
Visiting Professor

I received my M.S. degree in China Textile University (Current: Donghua University) in Shanghai in 1988. I used to be a visiting scholar of Department of Chemistry and Biochemistry of University of California at Los Angeles in Prof. Richard B. Kaner’s group in 2014 and of Department of Chemistry of University of Oxford, UK, in Prof. Mark G. Moloney’s group in 2009. I have been a full professor since 2003. My research has focused on molecular design and synthesis of new conducting polymers with unique multifunctionality including strong adsorbability toward heavy metal ions, recovery of noble metals, fluorescent emission and its amplified quenching, and reversibly redox performance for sensitively sensing metal ions and explosives for applications as electronic materials, nanosorbents towards heavy metal ions, chemosensor, ion-selective electrode sensor, and supercapacitors. I joined Prof. Jeremiah A Johnson’s group in July 2016, where I continue to investigate the new efficient synthesis of novel aromatic conjugated conducting polymers emitting strong visible color fluorescence that can be remarkably quenched for ultrasensitive metal-ion sensors. In my free time, I enjoy healthy life including cooking and walking.

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Jenny Liu
Graduate Student

I was born and raised in Toronto, Ontario, Canada; I received a B.S. in chemistry from McGill University in Montreal, Quebec. Through my undergraduate research experience, I became interested in the interdisciplinary nature of chemistry through work on metalloproteins, molecular electronics, and polyazobenzenes. As part of the Johnson group, I am excited to apply materials and synthetic chemistry for biological applications including therapeutic uses. In addition to chemistry, some of my favorite activities include exploring new places, capturing photos, and cooking up tasty dishes.

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Michelle MacLeod
Graduate Student

I was raised in picturesque Ithaca, NY where I received my B.A. in chemistry and economics from Cornell University. During my undergraduate research with Francis DiSalvo, I became interested in materials science and inorganic chemistry. As a member of the Johnson group, I am excited to apply and expand upon my interests at the interface of organometallic and polymer chemistry. Beyond the lab, I enjoy cooking and exploring the great outdoors, even a bog on occasion.

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Hung Nguyen
Graduate Student

Originally from Vietnam, I came to the States in 2009 for my undergraduate study. I attended Northern Virginia Community College, and then transferred to the University of North Carolina at Chapel Hill to finish my B.S. in Chemistry. During my undergraduate study, I worked on developing a radiopaque iodine-containing bone cement in Dr. Valerie Ashby’s lab (UNC-CH) and multi-stimuli responsive nanocapsule systems under Prof. Katharina Landfester (MPI-P), both of which clearly shaped my interest in polymer design and its vast potential in the biomedical field. Upon graduation, I worked on impurity characterization and API release profiling in oncology drugs at GSK. Joining the Johnson group, I will be working on developing ROMP-based BASP nanoparticles for applications in biomedicine, including imaging and drug delivery.

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Jiwon Park
UROP

I was born in Seoul, South Korea, but grew up in the plains of Fort Wayne, Indiana. I am now a junior majoring in Chemistry and interested in the interface of medicine, research, and finance. Before coming to MIT, I was a summer intern in the lab of Prof. Helen Blau at Stanford Medical School and Dr. Vincent Manganiello at the National Institutes of Health. During my first two years at MIT, I worked in the lab of Prof. David Sabatini at the Whitehead Institute, characterizing a transmembrane protein important for amino acid sensing in a metabolic pathway. After taking a class on inorganic chemistry, I became fascinated by polymers and material synthesis. I am excited to be a part of the Johnson group to do research in the field of polymer science. Outside of lab, I enjoy horseback riding, playing tennis, golfing, and performing at piano competitions.

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Yoshiki Shibuya
Visiting Student

Yoshiki studied chemistry at the University of Tokyo and graduated with B.S. and M.S. degrees under the guidance of Prof. Takuzo Aida. He is now a 5th-year graduate student in the Aida group at the University of Tokyo, continuing the research there. His research in Japan focuses on crystalline and liquid crystalline tweezers-like molecules with fluorescence properties. As a visiting student in the Johnson group, he is investigating properties of bottlebrush polymers.

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Dr. Farrukh Vohidov
Postdoctoral Scientist

I was raised in Dushanbe, the capital of mountainous Tajikistan. After getting involved in my high school chemistry club I became fascinated with chemistry and I was lucky to represent my country in a number of international chemistry Olympiads. I earned my BS in Chemistry from Fatih University in Istanbul, where I worked with Prof. Naz Agh-Atabay on synthesis of macrocyclic complexes of transition metals for antimicrobial applications. In fall of 2010 I began graduate school at Rice University, in Houston, Texas. Under the guidance of Prof. Zachary Ball I developed methods for catalytic protein modification, synthesized a class of luminogenic azide probes, and designed inhibitors of protein-protein interactions. I joined Prof. Jeremiah Johnson’s group in June 2016, where I am excited to have the opportunity to research novel polymer-based biomaterials and their application for drug delivery, biological imaging, and tissue engineering. Outside the lab I lead an active lifestyle, and I especially enjoy running and playing football. In my free time I like to work on my car and explore new places with my fiancée.

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Wencong Wang
Visting Student

I was born and raised in Shandong Province, a place famous for its ancient culture and Confucius in China. Now I am a rising fourth year student at Tsinghua University in persuit of a B.S. in Chemical Biology. I have worked on a project using selenium-containing polymers as drug delivery vehicles supervisied by Prof. Huaping Xu. Since then, I have grown interested in organic synthesis and exploring its biological applications. I currently work as a visiting student in Prof. Johnson's lab to learn more about these topics.

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Cathy Zhang
UROP

I am from Salt Lake City, Utah and a current sophomore majoring in biochemistry at Wellesley College. I have previously worked at Moran Eye Center studying neurotropic keratopathy in the Ambati lab. I am excited to be part of the Johnson lab to begin work in polymer science. Outside of academics, I enjoy being active out in the mountains, teaching tennis and attending symphonies.

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Dr. Wenxu Zhang
Postdoctoral Scientist

I was born and raised in Hengyang, a small city in South China. In 2010, I traveled 20 hours by train to attend Zhejiang University, where I botained my bachelor's degree. After that, I moved to University of Massachusetts, Amherst to pursue my Ph.D. in the Department of Polymer Science and Engineering. Under the advisory of Prof. E. Bryan Coughlin, I synthesized ionic copolymers for anion transport materials using RAFT and ROMP, and also studied the self-assembly of high-chi block copolymers. Now I am super excited to have the oppurtunity to be a postdoctoral researcher in the Johnson group, working on novel polymers with high stability for energy applications. In my free time, I enjoy eating spicy food, watching soccer, and visiting museums as well as zoos. In addition, I like Bruce Wayne, Tony Stark, and Han Solo.

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Julia Zhao
1st-Year Graduate Student

Originally from Kansas City, Missouri, Julia earned a B.S. in chemistry and minored in biochemistry and cell biology at Rice University. As an undergraduate, she explored several areas of materials research, including single molecule spectroscopy and viral engineering at Rice as well as polymeric gene delivery as an Amgen scholar at UW. Julia also spent a summer as a visiting MPC CMSE intern at MIT, where she studied molecular defects in polymer networks in the Johnson and Olsen groups. She enjoyed the experience so much that she returned to MIT and the Johnson group to specialize in polymer chemistry as a graduate student. Julia spends her free time drawing, making music, and watching movies.

Postdoctoral Scientists

Graduate Students

UROPs

Visiting Members

Former Members:

Jiyeon Woo

Visiting Student
2011

Eva-Maria Schoen

Visiting Student
Summer 2012

Alan Burts

M.S. 2013
Current: University of California, Irvine, Dept. of Chemistry

Jessica McCombs

M.S. 2013
Current: Dept. of Pharmaceutical Chemistry, Univ. of Utah

Marco Messina

Visiting Student; Summer 2013
Current: PhD Student at UCLA with Heather Maynard

Dr. Huaxing Zhou

PD (2011-2013)
Current: ExxonMobil

Johanna Ertl

Visiting Student
Spring 2014

Elisha Yadgaran

UROP (2011-2014)
Current: Quantitative Analysis at Everquote.com

Kojiro Fujimura

Visiting Student; Summer 2014
Current: Mitsui Chemicals

Leila Terrab

Visiting MSRP Student
Summer 2014

Julia Zhao

Visiting Student; Summer 2014
Current: PhD Student at MIT with Jeremiah Johnson

Angela Gao

M.S. 2014
Current: Finnegan IP Firm

Molly Sowers

M.S. 2014
Current: Quantitative Data Analyst at Cogo Labs

Julie Geng

Visiting High School Student (2014)
Undergraduate Student at Williams College

Erica Zhou

Visiting High School Student (2014)
Undergraduate Student at MIT

Dr. Longyan Liao

PD (2012-2014)
Current: DOW

Vivian Tian

UROP (2014-2015)
Current: Course 10 Major at MIT

Chew Chai

UROP (2014-2015)
Current: Doyle Group Course 10

Katherine Mizrahi

UROP (2014-2015)
Current: Alexander-Katz Group Course 3

Kevin Erazo

UROP (2014-2015)
Current: Stanford University Dept. of Chemistry PhD Program

Katherine Young

UROP (2015)

Prof. Jun Lin

Visiting Professor (2016)

Gihan Hewage

M.S. 2015
Current: Lux Research

Alan Enciso

Visiting Student (2016)

Shihong (Will) Deng

Visiting Student (2016)

Dr. Jonathan Barnes

PD (2014-2016)
Current: Assistant Professor, Washington University in St. Louis

Dr. Alex Zhukhovitskiy

PhD 2016
Current: PD, Toste Group, UC Berkeley

Dr. Mingjiang Zhong

PD (2013-2016)
Current: Assistant Professor, Yale University

Dr. Qixian Chen

PD (2015-2016)

Dr. Yufeng Wang

PD (2014-2016)
Current: Assistant Professor, University of Hong Kong

Yasmeen AlFaraj

Visiting Student (2016)
Current: Undergraduate, UC Berkeley

 

 

 

 

Publications:

Lab
“Quantifying the Impact of Molecular Defects on Polymer Network Elasticity”
Zhong, M.; Wang, R.; Kawamoto, K.; Olsen, B. D.*; Johnson, J. A.* Science 2016, 353, 1264-1268.

Selected Highlights:
"New theory overcomes a longstanding polymer problem" MIT News 2016, September 15th.
"New theory overcomes a longstanding polymer problem" Chemeurope.com 2016, September 20th.
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Lab
“Using an RNAi Signature Assay to Guide the Design of Three-drug Conjugated Nanoparticles with Validated Mechanisms, In Vivo Efficacy, and Low Toxicity”
Barnes, J. C.; Bruno, P. M.; Nguyen, H. V.-T.; Liao, L.; Liu, J.; Hemann, M. T.; Johnson, J. A.* J. Am. Chem. Soc. 2016, doi:10.1021/jacs.6b06321.

Selected Highlights:
"High-capacity nanoparticle" MIT News 2016, September 14th.
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Lab
“Polymer Structure Dependent Hierarchy in PolyMOC Gels”
Zhukhovitskiy, A. V.; Zhao, J.; Zhong, M.; Keeler, E. G.; Alt, E. A.; Teichen, P.; Griffin, R. G.; Hore, M. J. A.; Willard, A. P.; Johnson, J. A.* Macromolecules 2016, doi:10.1021/acs.macromol.6b01607.
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Lab
“Graft-through Synthesis and Assembly of Janus Bottlebrush Polymers from A-Branch-B Diblock Macromonomers”
Kawamoto, K.; Zhong, M.; Gadelrab, K. R.; Cheng, L.-C.; Ross, C. A.; Alexander-Katz, A.; Johnson, J. A.* J. Am. Chem. Soc. 2016, 138, 11501-11504.
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Lab
“Block Co-polyMOCs by Stepwise Self-assembly”
Wang, Y.; Zhong, M.; Park, J. V.; Zhukhovitskiy, A. V.; Johnson, J. A.* J. Am. Chem. Soc. 2016, 138, 10708-10715.
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Lab
“Iterative Exponential Growth Synthesis and Assembly of Uniform Diblock Copolymers”
Jiang, Y.; Golder, M. R.; Nguyen, H. V.-T.; Wang, Y.; Zhong, M.; Barnes, J. C.; Ehrlich, D. J. C.; Johnson, J. A.* J. Am. Chem. Soc. 2016, 138, 9369-9372.
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Lab
“Reactions of Persistent Carbenes with Hydrogen-terminated Silicon Surfaces”
Zhukhovitskiy, A. V.; Mavros, M. J.; K.T. Queeney; Wu, T.; Van Voorhis, T.; Johnson, J. A.* J. Am. Chem. Soc. 2016, 138, 8639-8652.

Selected Highlights:
"N-heterocyclic carbenes aminate silicon surfaces" C&E News 2016, 94, 10.
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“Universal Cyclic Topology in Polymer Networks”
Wang, R.; Alexander-Katz, A.; Johnson, J. A.*; Olsen, B. D.* Phys. Rev. Lett. 2016, 116, 188302-1-5.
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Lab
“Tailoring the Structure of Polymer Networks with Iniferter-mediated Photo-Growth”
Singh, A.; Kuksenok, O.; Johnson, J. A.*; Balazs, A. C.* Polym. Chem. 2016, 7, 2955-2964.
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Lab
“Light-controlled Living Radical Polymerization: Mechanisms, Methods, and Applications”
Chen, M.; Zhong, M.; Johnson, J. A.* Chem. Rev. 2016, DOI: 10.1021/acs.chemrev.5b00671.
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Lab
“Highly Branched and Loop-rich Gels via Formation of Metal-organic Cages Linked by Polymers”
Zhukhovitskiy, A. V.; Zhong, M.; Keeler, E. G.; Michaelis, V. K.; Sun, J. E.P.; Hore, M. J. A.; Pochan, D. J.; Griffin, R. G.; Willard, A. P.; Johnson, J. A.* Nature Chem. 2016, 8, 33-41.

Selected Highlights:
"Hybrid material flexes its muscles" Chemical and Engineering Progress 2015, 111, 7.
"Metal-organic networks go elastic" C&E News 2015, 93, 27.
"Chemists create adaptable metallic-cage gels" MIT News 2015, November 17th.
"Chemists create adaptable metallic-cage gels" Chemeurope.com 2015, November 20th.
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Lab
“Loops Versus Branch Functionality in Model Click Hydrogels”
Kawamoto, K.; Zhong, M.; Wang, R.; Olsen, B. D.*; Johnson, J. A.* Macromolecules 2015, 48, 8980-8988.
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Lab
“Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates”
Zhukhovitskiy, A. V.; MacLeod, M. J.; Johnson, J. A.* Chem. Rev. 2015, 115, 11503-11532.
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Lab
“Iterative Exponential Growth of Stereo- and Sequence-controlled Polymers”
Barnes, J. C.; Ehrlich, D. J.-C.; Gao, A. X.; Leibfarth, F. A.; Jiang, Y.; Zhou, E.; Jamison, T. F.; Johnson, J. A.* Nature Chem. 2015, 7, 810-815.

Selected Highlights:
"Iterative Exponential Growth of Stereo- and Sequence-Controlled Polymers" Synfacts 2016, 12, 0037.
"Click chemistry creates precision polymers" RSC Chemistry World 2015, September 8th.
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Lab
“Scalable Synthesis of Sequence-defined, Unimolecular Macromolecules by Flow-IEG.”
Leibfarth, F. A.; Johnson, J. A.*; Jamison, T. F.* Proc. Natl. Acad. Sci. U.S.A. 2015, 112, 10617-10622.

Selected Highlights:
"Semiautomated Route to Defined Polymers" C&E News 2015, 93, 5.
"Automated Flow Technique Makes Length- And Sequence-Specific Polymers" C&E@ACS Boston 2015, August 19th.
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Lab
“PEGylated N‑Heterocyclic Carbene Anchors Designed To Stabilize Gold Nanoparticles in Biologically Relevant Media.”
MacLeod, M. J.; Johnson, J. A.* J. Am. Chem. Soc. 2015, 137, 7974-7977.
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Lab
“Visible-light-controlled Living Radical Polymerization from a Trithiocarbonate Iniferter Mediated by an Organic Photo-redox Catalyst.”
Chen, M.; MacLeod, M. J.; Johnson, J. A.* ACS Macro Lett. 2015, 4, 566-569.
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Lab
“A Dual Role for 1,2,4,5-Tetrazines in Polymer Networks: Combining Diels-Alder Reactions and Metal Coordination to Generate Functional Supramolecular Gels”
Kawamoto, K.; Grindy, S. C.; Liu, J.; Holten-Andersen, N.; Johnson, J. A.* ACS Macro Lett. 2015, 4, 458-461.
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Lab
“Improving Photo-controlled Living Radical Polymerization from Trithiocarbonates through the Use of Continuous-flow Techniques”
Chen, M.; Johnson, J. A.* Chem. Commun. 2015, 51, 6742-6745.
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Lab
“Cycloelimination of Imidazolidin-2-ylidene N-heterocyclic Carbenes: Mechanism and Insights Into the Synthesis of Stable “NHC-CDI” Amidinates”
Zhukhovitskiy, A. V.; Geng, J.; Johnson, J. A.* Chem. Eur. J. 2015, 21, 5685-5688.

Selected Highlights:
"Cover Profile" Chem. Eur. J. 2015, 21, 5649.
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Lab
“Redox Responsive Branched Bottlebrush Polymers for In Vivo MRI and Fluorescence Imaging”
Sowers, M. A.; McCombs, J. R.; Wang, Y.; Paletta, J. T.; Morton, S. W.; Dreaden, E. C.; Boska, M. D.; Ottaviani, M. F.; Hammond, P. T.; Rajca, A.; Johnson, J. A.* Nature Commun. 2014, 5, DOI: 10.1038/ncomms6460.

Selected Highlights:
"Two Sensors In One" MIT News 2014, November 18th.
"Organic, Non-toxic Sensor Allows Dual MRI and Fluorescent Imaging" NIH NIBIB Science Highlight 2015, March 2nd.
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Lab
“Synthesis of Acid-labile PEG and PEG-doxorubicin-conjugate Nanoparticles Via Brush-first ROMP”
Gao, A. X.; Liao, L.; Johnson, J. A.* ACS Macro Lett. 2014, 3, 854-857.
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Lab
“Crossover Experiments Applied to Network Formation Reactions: Improved Strategies for Counting Elastically Inactive Molecular Defects in PEG Gels and Hyperbranched Polymers”
Zhou, H.; Schön, E.-M.; Wang, M.; Glassman, M. J.; Liu, J.; Zhong, M.; Díaz, D. D.; Olsen, B. D.; Johnson, J. A.* J. Am. Chem. Soc. 2014, 136, 9464-9470.
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Lab
“A Convergent Synthetic Platform for Single-nanoparticle Combination Cancer Therapy: Ratiometric Loading and Controlled Released of Cisplatin, Doxorubicin, and Camptothecin”
Liao, L.; Liu, J.; Dreaden, E. C.; Morton, S. W.; Shopsowitz, K. E.; Hammond, P. T.; Johnson, J. A.* J. Am. Chem. Soc. 2014, 136, 5896-5899.

Selected Highlights:
"Nanoparticles Deliver Three Cancer Drugs to Tumors" C&E News 2014, 19, 9.
"Nanoparticles Serve Up Calibrated Cocktails To Treat Cancer" JACS Spotlights 2014, 136, 6511.
"Targeting Cancer with a Triple Threat" MIT News 2014, April 15th.
"Trois Anticancéreux Dans Une Nanoparticule" Le Monde 2014, April 21st.
"New Nanoparticles Can Deliver Three Cancer Drugs at Once" Business Standard 2014, April 16th.
"Super Cancer-fighting Nanoparticle Built Like a Lego Set" Qmed 2014, April 15th.
"Nanoparticles Deliver Three Cancer Drugs at Once" I. F. L. S. 2014, April 15th.
"Drug-delivering Nanoparticles Pose a Triple Threat to Cancer" Gizmag 2014, April 16th.
"MIT researchers create polymer nanoparticle for cancer drug delivery" in-Pharma Technologist.com 2014, May 15th.
"Revolutionary Nanoparticle Based Drug Delivery - Targeted Cancer Therapeutics Interview" SelectScience 2014, June 10th.
"Targeting cancer with a triple threat: new nanoparticles can deliver three drugs at once" ScienceDaily 2014, April 15th.
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Lab
“Brush-First Synthesis of Core-Photodegradable Miktoarm Star Polymers via ROMP: Towards Photoresponsive Self-Assemblies”
Burts, A. O.; Gao. A. X.; Johnson, J. A.* Macromol. Rap. Commun. 2014, 35, 168-173.
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Lab
“Brush-First and Click: Efficient Synthesis of Nanoparticles that Degrade and Release Doxorubicin in Response to Light”
Burts, A. O.; Liao, L.; Lu, Y. Y.; Tirrell, D. A.; Johnson, J. A.* Photochem. Photobiol. 2014, 90, 380-385.
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“Particles Without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers Under Ambient Conditions”
Liu, J.; Gao, A. X.; Johnson, J. A.* J. Vis. Exp. 2013, (80), e50874, DOI:10.3791/50874
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“Synthesis of Model Network Hydrogels via Tetrazine-Olefin Inverse Electron Demand Diels-Alder Cycloaddition”
Cok, A. M.; Zhou, H.; Johnson, J. A.* Macromol. Symp. 2013, 329, 108-112.
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Lab
“Addressable Carbene Anchors for Gold Surfaces”
Zhukhovitskiy, A. V.; Mavros, M. G.; Van Voorhis, T.; Johnson, J. A.* J. Am. Chem. Soc. 2013, 135, 7418-7421.

Selected Highlights:
"Carbene For Gold Surfaces" C&E News: News of the Week 2013, 91, 11.
"A New Kind of Chemical Glue" MIT News 2013, May 29th.
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Lab
“Photo-Controlled Growth of Telechelic Polymers and End-Linked Polymer Gels”
Zhou, H.; Johnson, J. A.* Angew. Chem. Int. Ed. 2013, 52, 2235-2238.

Selected Highlights:
"Polymer Chemistry: Rooftop Reactions" Nature Chemistry 2013, 5, 366-368.
"Light Makes Pores in Polymer Gel Bigger" Materials 360 2013, May 15th.
"Pores for Thought: Just Shine a Light" Spectroscopy NOW 2013, February 15th.
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“Reply to Stadler: Combining Network Disassembly Spectrometry With Rheology/Spectroscopy”
Olsen, B. D.; Johnson, J. A.* Proc. Natl. Acad. Sci. U.S.A. 2013, 110, E1973.
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Lab
“Application of 1H DOSY for Facile Measurement of Polymer Molecular Weights”
Li, W.; Chung, H.; Daeffler, C.; Johnson, J. A.*; Grubbs, R. H.* Macromolecules 2012, 45, 9595-9603.
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Lab
“Counting Primary Loops in Polymer Gels”
Zhou, H.; Woo, J.; Cok, A. M.; Wang, M.; Olsen, B. D.; Johnson, J. A.* Proc. Natl. Acad. Sci. U.S.A. 2012, 109, 19119-19124.

Selected Highlights:
"Polymer Chemistry: Wasted Loops Quantified" Nature 2013, 493, 172-173.
"Counting Loops in Gels" Nature 2012, 491, 304-305.
"A Step Toward Stronger Polymers" MIT News 2012, November 5th.
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Lab
“'Brush-First' Method for the Parallel Synthesis of Photocleavable, Nitroxide-Labeled PEG Star Polymers.”
Liu, J.; Burts, A. O.; Li, Y.; Zhukhovitskiy, A. Z.; Ottaviani, M. F.; Turro, N. J.; Johnson, J. A.* J. Am. Chem. Soc. 2012, 134, 16337-16344.

Selected Highlights:
"Synthesis of Photocleavable Star Polymers by the 'Brush-First' Method" Synfacts 2012, 8, 1321.

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Lab
“Using EPR To Compare PEG-branch-nitroxide 'Bivalent-Brush Polymers' and Traditional PEG Bottle-Brush Polymers: Branching Makes a Difference”
Burts, A. O.; Li, Y.; Zhukhovitskiy, A. Z.; Patel, P. R.; Grubbs, R. H.; Ottaviani, M. F.; Turro, N. J.; Johnson, J. A.* Macromolecules 2012, 45, 8310-8318.
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Lab
“EPR Study of Spin-Labeled Brush Polymers in Organic Solvents.”
Xia, Y.; Li, Y.; Burts, A. O.; Ottaviani, M. F.; Tirell, D. A.; Johnson, J. A.*; Turro, N. J.*; Grubbs, R. H.* J. Am. Chem. Soc. 2011, 133, 19953-19959.
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Selected Publications Prior to MIT:
“Core-Clickable PEG-Branch-Azide Bivalent-Bottle-Brush Polymers by ROMP: Grafting-Through and Clicking-To.”
Johnson, J. A.; Lu, Y.-Y.; Burts, A. O.; Lim, Y.-H.; Finn, M. G.; Koberstein, J. T.; Turro, N. J.; Tirrell, D. A.; Grubbs, R. H. J. Am. Chem. Soc. 2011, 133, 559-566.
“Drug-Loaded, Bivalent-Bottle-Brush Polymers by Graft-through ROMP.”
Johnson, J. A.; Lu, Y. Y.; Burts, A. O.; Xia, Y.; Durrell, A. C.; Tirrell, D. A.; Grubbs, R. H. Macromolecules 2010, 43, 10326-10335.
“Residue-specific incorporation of non-canonical amino acids into proteins: recent developments and applications.”
Johnson, J. A.; Lu, Y. Y.; Van Deventer, J. A.; Tirrell, D. A. Curr. Opion. Chem. Biol. 2010, 14, 774-780.
“Copper-free click chemistry for the in situ crosslinking of photodegradable star polymers.”
Johnson, J. A.; Baskin, J. M.; Bertozzi, C. R.; Koberstein, J. T.; Turro, N. J. Chem. Commun. (Cambridge, U. K.) 2008, 3064-3066.
“Construction of linear polymers, dendrimers, networks, and other polymeric architectures by copper-catalyzed azide-alkyne cycloaddition click chemistry.”
Johnson, J. A.; Finn, M. G.; Koberstein, J. T.; Turro, N. J. Macromol. Rapid Commun. 2008, 29, 1052-1072.
“Synthesis of photocleavable linear macromonomers by ATRP, and star macromonomers by a tandem ATRP-click reaction: precursors to photodegradable model networks.”
Johnson, J. A.; Finn, M. G.; Koberstein, J. T.; Turro, N. J. Macromolecules 2007, 40, 3589-3598.
“Synthesis of degradable model networks via ATRP and click chemistry.”
Johnson, J. A.; Lewis, D. R.; Diaz, D. D.; Finn, M. G.; Koberstein, J. T.; Turro, N. J. J. Am. Chem. Soc. 2006, 128, 6564-6565.

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