aspuru-list May 2013

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38 participants
92 discussions

[Aspuru-Guzik group list] Excitonics Seminar: Bradley Olsen, May 9, 3 PM, RM 36-428

by Catherine M Bourgeois

Please post and forward to your groups - Thanks. -------------------------------------- Center for Excitonics* Seminar Series Thurs, May 9, 2013 3:00 PM RLE Haus Room: 36-428 Self-Assembly of Functional Polymers Bradley Olsen, Department of Chemical Engineering, MIT Abstract: Block copolymer self-assembly represents an elegant, low-cost technique for the fabrication of complex new soft materials. Critical for many of the applications for such materials is incorporating polymers with a given optical, electronic, or biological functionality into the nanostructured material. In contrast to traditional polymers which have Gaussian coil chain shapes, functional systems often have highly anisotropic shapes and specific interactions that can lead to extremely rich self-assembly behavior. In organic electronics, significant effort has been dedicated towards elucidating the thermodynamics of self-assembly in semiconducting polymer systems which tend to take on extended chain conformations due to the conjugated backbones present in the polymers. Over the past decade, a great deal of knowledge has emerged about the effects of chain rigidity on thermodynamic aspects of self-assembly in these systems, driving forward the capability of these block copolymer systems. However, our knowledge of kinetic effects in self-assembly continues to lag, necessitating fundamental studies of dynamics to compliment thermodynamics. Through a combination of scaling theories, molecular dynamics simulation, and experiments we have explored diffusion and molecular relaxation in these systems, hinting at dynamic design rules in organic electronic materials. The use of self-assembled ionic templates provides an alternative method to control structures in optoelectronic materials using block copolymers processed under aqueous conditions. Reversible addition-fragmentation chain transfer (RAFT) polymerization is employed to synthesize diblock copolymers with one neutral thermoresponsive and one polycationic block and the pH-dependent complexation between fluorescent proteins or biomimetic J-aggregating chromophores and the polycationic block is demonstrated. Spin casting is used to prepare nanostructured films from the protein-block copolymer and chromophore-block copolymer coacervates. After film formation, the lower critical solution temperature (LCST) of the thermoresponsive block allows the nanomaterial to be effectively immobilized in aqueous environments at physiological temperatures, enabling use of the materials for biomolecule immobilization and controlled release. The local block copolymer environment is shown to have significant effect on the J-aggregate formation process and morphology. Bio Bradley earned his S.B. from MIT in June 2003. He earned a Ph.D. in Chemical Engineering in December 2007 at UC Berkeley advised by Prof. Rachel Segalman. His research developed the first universal phase diagram for rod-coil block copolymers, an emerging category of polymers with importance for producing self-assembled nanomateirals in biotechnology and organic electronics. He was a NIH and Beckman Institute Postdoctoral Fellow with Profs. David Tirrell, Julia Kornfield, and Zhen-Gang Wang at Caltech, where he applied protein biosynthesis to the design of physically associating telechelic protein hydrogels applied as injectable biomaterials. His current research interests are broadly clustered in the areas of soft condensed matter physics and macromolecular physics, including liquid crystals, biomaterials, colloids, and polymers. He is particularly interested in how biosynthesis can be used as a natural green chemistry for the preparation of designer polymeric materials, how controlled polymerization through biology can give us unique materials that provide insight into polymer physics, and the unique physics of self-assembly in complex protein nanostructures for biotechnology and energy applications. Light refreshments will be served. *The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic Energy Sciences

11 years

[Aspuru-Guzik group list] FW: TODAY, 32-123, 1pm: ARTS for MIT Campus Hosted by MIT Lincoln Laboratory

by Catherine M Bourgeois

One of our members, Tom Bischof will be presenting -Please forward to your groups Please join us and encourage others to attend the Advanced Research and Technology Symposium<http://www.ll.mit.edu/MITARTS> (ARTS) that MIT Lincoln Laboratory is hosting on campus this Friday, May 3rd, from 1:00-5:00 p.m. in the MIT Stata Center (32-123). Throughout the afternoon, learn about Lincoln Laboratory in a series of short talks and poster presentations from the Laboratory's Director, Chief Technology Officer (CTO), research staff, and campus collaborators. The posters and research presentations will focus on: * Optical and Quantum Devices * Electronic and Electromagnetic Technologies * Data Analytics and Cyber Security In addition to the Lincoln Lab and campus speakers listed on the agenda<http://www.ll.mit.edu/mitarts/agenda.pdf>, there will be posters presented by several MIT students: William Loh Advisor: Prof. Rajeev Ram Greg Steinbrecher Advisor: Prof. Jeffrey Shapiro Katia Shtrykova Advisor: Prof. Erich Ippen Cheryl Sorace-Agaskar Advisors: Profs. Mike Watts/Franz Kaertner Thomas Bischof Advisor: Prof. Moungi Bawendi Karan Mehta Advisor: Prof. Rajeev Ram Thank you for your assistance in encouraging interested students, staff and faculty to attend.

11 years

[Aspuru-Guzik group list] [qip] Lincoln Labs talks tomorrow

by aram harrow

Stata Center, 1-5pm, many on topics related to experimental quantum information. http://www.ll.mit.edu/mitarts/ -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

11 years

[Aspuru-Guzik group list] Diplomacy game

by Alan Aspuru-Guzik

Orders. Dear all, this is about diplomacy we need to have a "neutral" way of entering orders, which assume will be BY PAPER (written clearly following the format of the game). I propose to have a volunteer to be the GameMaster, who enters them latter in e.g. jDip for adjudication. I propose to put orders in by Friday at group meeting time (beginning of group meeting). Then adjudicate retreats in Mondays and Builds on Wednesdays to move again on Friday. The details would be managed by the volunteer game master, for which there would be a group duty bonus point and also the pleasure of entering the orders and e-mailing hte current map generated by JDip to the group every week. Anybody volunteers? Alan Alán Aspuru-Guzik | Professor of Chemistry and Chemical Biology Harvard University | 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu | http://about.me/aspuru

11 years

[Aspuru-Guzik group list] [Aspuru-meetings-list] Group meeting this Friday: Nicolas Sawaya

by Ryan Babbush

Hey Everyone, This Friday the Aspuru-Guzik group will meet at the usual time and place to hear Nico give his first group meeting. The abstract and title for his talk are included below. "Matrix Exponentiation Methods with GPUs (with Potential Applications to Molecular Design)." Abstract: I will first give a brief overview of the standard method for solving sparse linear systems of ODEs, with applications to exciton propagation in chlorosomes. Use of GPUs to tackle large systems will be discussed, as well as a potential algorithmic improvement that we have been preparing to implement. Then I’ll outline some ways in which we can use tunable well-ordered chemical systems to design materials with specific physical properties. I’ll summarize a recent work in which an antennae-like MOF (metal-organic framework) material was rationally designed, and review supramolecular methods that are promising candidates for similar developments. -- Ryan Babbush | PhD Student in Physics (949) 331-3943 | babbush(a)fas.harvard.edu Harvard University | Aspuru-Guzik Group 12 Oxford Street | Cambridge, MA 02138 _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

11 years

[Aspuru-Guzik group list] [qip] Friday May 3

by Edward Farhi

Hi Quanta We will meet tomorrow (Friday) at 11:00. Valla is going to tell us about what he has been doing. See you there. Eddie ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Edward Farhi Cecil and Ida Green Professor of Physics Director Center for Theoretical Physics Massachusetts Institute of Technology 6-300 Cambridge MA 02139 617 253 4871 ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

11 years

[Aspuru-Guzik group list] for 3d printer

by Semion Saikin

http://pubs.acs.org/doi/abs/10.1021/nl4007744 -- ******************************************** Semion K. Saikin, PhD Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street, Cambridge, MA 02138 email: saykin(a)fas.harvard.edu phone: (619)212-6649 ********************************************

11 years

[Aspuru-Guzik group list] Declaration of War!

by Jacob Sanders

Dear Enemie...I mean group members, This means WAR! We will be starting our first group game of Diplomacy this Friday after group meeting. Here are the team names, team members, and countries: The Reimbursements (England): Alan, Cynthia, and Marlon The Compressors (Russia): Xavier, Jacob, Semion, Sarah, Joey, Martin, and Sule Princess Jellyfish (Austria): Ryan, Jon, Taka, Kai, Johannes, and Adrian The Joe Lavins (Germany): Jarrod, Joon, Jenny, and Suleyman The Preppies (Italy): Stephanie, John, David, and Dmitrij Guantanamo and "Friends" (Turkey): Sam, Thomas, Salvatore, Umberto, and Changwon Siberia (France): Dmitry, Felipe, Gian, Christoph, Nico, and Carolina (Team names may be changed upon request.) Countries were picked in a random drawing by Cynthia, and video evidence of the randomness of this drawing is available upon request. The rules are attached below! Everyone should read these rules and be ready to make their first move by Friday after group meeting. We will then have a week of intrigue, and we will make moves every Friday after group meeting thereafter. May the strongest country win! Yours in love and war, Jacob Member of the Compressors ("We Will Compress You!")

11 years

[Aspuru-Guzik group list] [Aspuru-meetings-list] Emmanuel Candès giving Simon Lectures in MIT

by Jiahao Chen

In case the news hasn't reached across the zip codes, Emmanuel Candès, who has done a lot of work on compressive sensing and sparse signal recovery, is giving this year's Simon Lectures in the MIT mathematics department. http://math.mit.edu/news/simons/ I seem to recall that some people in your group are interested in compressive sensing, so I thought I'd pass this along. Thanks, · Jiahao Chen · MIT Chemistry · _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

11 years

[Aspuru-Guzik group list] ice cream in the break room

by Joey Goodknight

get it now before it melts! -Joey

11 years

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aspuru-list May 2013