Department of Chemistry
Massachusetts Institute of Technology
77 Massachusetts Avenue, Room 18-296
Cambridge, MA 02139-4307 USA
Phone: (617) 253-1819
Assistant Professor of Chemistry,
Massachusetts Institute of Technology
Beckman Institute Postdoctoral Scholar with Professors Robert H. Grubbs and David A. Tirrell, California Institute of Technology
Graduate research with Professor M.G. Finn,
The Scripps Research Institute, summers
Graduate research with Professor Nicholas J. Turro,
Undergraduate research with Karen L. Wooley,
Washington University in St. Louis
Ph. D., Chemistry
Washington University in St. Louis, B.S.,
Biomedical Engineering and Chemistry
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 on "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 on 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!
30 September 2013: Alan and Yan's paper on describing 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 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:
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 carbene surface paper receives media attention:
30 May 2013: Carbene surfaces featured as the MIT homepage spotlight!
13 May 2013: Alex's "addressable carbenes for gold surfaces" paper appears online. Congrats Alex!
3 May 2013: The group welcomes Oh Seok Kwon!
3 May 2013: Discussion of our "Network Disassembly Spectrometry" (NDS) method in PNAS:
23 April 2013: "Photo-growth" paper highlighted in Nature Chemistry:
27 February 2013: Huaxing's photo-growth paper highlighted by various media outlets:
2 February 2013: The Johnson Group on their first somewhat annual ski trip:
18 January 2013: Huaxing's "photo-controlled gel growth" paper appears online. Congrats Huaxing!
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!
4 October 2012: "Pseudo-alternating polymers" paper appears in Macromolecules. Congrats Alan and Alex!
6 September 2012: "Brush-first" paper appears in JACS. Congrats Jenny, Alan and Alex!
19 July 2012: The Johnson Group beach volleyball team:
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.”
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).
I am from Rochester, New York. I received my B.S. in chemistry and mathematics from Calvin College in Grand Rapids, Michigan. My undergraduate research focused on activation and imaging of the glucose transporter GluT1 in muscle cells. In the Johnson group, my research will focus on developing polymers for imaging and directed-drug delivery systems in vivo.
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 in the Polymer Science and Engineering Department synthesizing photo-cleavable polymers and with Prof. Ramanathan Nagarajan at the Natick Soldier RD&E Center (NSRDEC) 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.
I grew up in Ann Arbor, Michigan where I received my B.A. in Chemistry from the University of Michigan. There I began undergraduate research with Anne McNeil, and I studied conjugated polymers. I’m excited to be a part of the Johnson research group, where I will be working with functional polymers with biological applications. In my free time I like to bake, rock out to music, and play euchre.
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.
Dr. Longyan Liao
I was brought up in a small town in South China and went to Peking University for undergraduate study. Then I went to University of Utah to pursue Ph.D. degree under the direction of Prof. Matthew Sigman, where my research was focused on organometallic chemistry. With all that, I am here today in Johnson group working on functional polymers for drug delivery, catalysis, surface modification etc. Out of the lab, I enjoy jogging, reading and watching football when the tickets are not too expensive.
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.
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.
I grew up in a Readlyn, Iowa and received my B.A. from Cornell College, a liberal arts school in Mt. Vernon, Iowa. I had planned to be a theoretical mathematician, but fell in love with organic chemistry the first time I worked in a lab. I performed research at the University of Nebraska-Lincoln studying nitroxide radicals for the development of new MRI contrast agents. I am excited to continue working on medically relevant projects as a member of the Johnson group, where I will focus on functionality of drug loaded polymers. In my spare time, I enjoy playing guitar, singing, hiking, and playing board games.
I’m from Brooklyn, New York, born and raised. I am now a freshman ChemE major at MIT. Before starting my undergraduate studies I took a year to study abroad. I interned at MSKCC during the summer of my senior year in high school. While at MSKCC I became interested in the ways tumors can be specifically targeted with drugs. I am really happy to be a part of the Johnson Group and I hope to learn a lot. When I’m not in the lab or psetting, I like to play basketball, practice jiu jutsu, and hang out with friends.
I grew up in Guiyang, the capital city of Guizhou province, P.R.China. After receiving my B.S. degree in double majors of Chemistry and Mathematics at Peking University under the supervision of Prof. Yun-Dong Wu, I pursued my Ph.D. degree at Carnegie Mellon University (CMU) under the direction of Profs. Krzysztof Matyjaszewski and Tomasz Kowalewski. My primary research interests at CMU spanned the subjects of mechanistic study of reversible-deactivation radical polymerization, macromolecular self-assembly, nanocarbon and soft materials for energy storage and conversion applications. In October 2013, I joined the groups of Profs. Jeremiah A. Johnson and Bradley D. Olsen as a joint postdoctoral fellow, where my research will be focused on design and physical characterization of complex polymeric structures such as hydrogels and molecular brushes.
When I was 11, I moved from my hometown Dnepropetrovsk, Ukraine to a suburb of Chicago. As an undergraduate at Northwestern University, I completed the Integrated Science Program, and studied mathematics and chemistry. Since my first taste of chemistry research in Tobin Marks’s group and throughout my work in SonBinh Nguyen’s group at NU I have been drawn to problems that were at the interface of materials science and organic chemistry. In the Johnson group, my research continues to be interdisciplinary, encompassing organic and organometallic synthesis, polymer chemistry, and surface science. When not doing chemistry, I enjoy playing guitar, soccer, and exploring Boston with my wife.