aspuru-list March 2011

aspuru-list@lists.fas.harvard.edu

29 participants
86 discussions

[Aspuru-Guzik group list] [Fwd: Announcement Flyer for Next Harvard Physics Colloquium speaker, David Ceperley, University of Illinois, Urbana-Champaign 4-4-11]

by tempel＠physics.harvard.edu

Ceperley is giving the physics colloquium next monday... ---------------------------- Original Message ---------------------------- Subject: Announcement Flyer for Next Harvard Physics Colloquium speaker, David Ceperley, University of Illinois, Urbana-Champaign 4-4-11 From: maynard(a)physics.harvard.edu Date: Tue, March 29, 2011 3:35 pm To: grads(a)physics.harvard.edu faculty(a)physics.harvard.edu research(a)physics.harvard.edu support(a)physics.harvard.edu pherlihy(a)cfa.harvard.edu klabrecq(a)fas.harvard.edu -------------------------------------------------------------------------- Announcement Flyer for Next Harvard Physics Colloquium speaker, David Ceperley, University of Illinois, Urbana-Champaign 4-4-11

13 years, 1 month

[Aspuru-Guzik group list] an interesting report about science development by the Royal Society

by Semion Saikin

http://royalsociety.org/uploadedFiles/Royal_Society_Content/Influencing_Pol…

13 years, 1 month

[Aspuru-Guzik group list] Fwd: [CCB_Staff] Regarding Kittikhun ("Pun") Wangkanont

by Anna B. Shin

For those of you who are not on CCB mailing lists... Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu/ <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…> ---------- Forwarded message ---------- From: Aloise, Allen <aloise(a)chemistry.harvard.edu> Date: Tue, Mar 29, 2011 at 5:03 PM Subject: [CCB_Staff] Regarding Kittikhun ("Pun") Wangkanont To: "faculty(a)chemistry.harvard.edu" <faculty(a)chemistry.harvard.edu>, " staff(a)chemistry.harvard.edu" <staff(a)chemistry.harvard.edu>, gradstudents < gradstudents(a)chemistry.harvard.edu>, postdocs < postdocs(a)chemistry.harvard.edu>, "othergradstudents(a)chemistry.harvard.edu" < othergradstudents(a)chemistry.harvard.edu> Dear CCB Colleagues, Kittikhun ("Pun") Wangkanont is a former graduate student in the Shair Lab. He is no longer permitted to enter any buildings or laboratories in the Department of CCB. If you should see him in the CCB complex, please immediately notify the Harvard University Police Department at (617-49)5-1212. Please feel free to contact me with any questions or concerns. Sincerely, Allen --------------------------------------------------------------------- Allen Aloise, Ph.D. Director of Laboratories Co-Director of Graduate Studies Department of Chemistry and Chemical Biology (CCB) Harvard University 12 Oxford St. Cambridge, MA 02138 617-495-4283 (office) 617-496-5618 (fax) aloise(a)chemistry.harvard.edu _______________________________________________ ccb_staff mailing list ccb_staff(a)lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/ccb_staff

13 years, 1 month

[Aspuru-Guzik group list] Excitonics Poster Correction in Title

by Cathy Bourgeois

The previous announcement poster had a typo in the title. Please used this one instead. Thanks, Cathy

13 years, 1 month

[Aspuru-Guzik group list] Announcement: Excitonics Seminar, Tues. April 5, 3 PM/ 36-428

by Cathy Bourgeois

Please forward to your groups and post in your area ______________________________________ Center for Excitonics Seminar Series Announcement Tuesday, April 5, 2011 3:00 PM RLE Conference Room: 36-428 Charge separation by photoexcitation in semicrystalline polymeric semiconductors: An intrinsic or extrinsic mechanism? Carlos Silva, Université de Montréal Abstract: Understanding charge generation by light absorption in polymeric semiconductors is of profound scientific importance due to the vigorous drive to develop organic solar cells. Confusion prevails with respect to the intrinsic charge photogeneration mechanism in neat (undoped) semicrystalline films. Numerous publications report charge photogeneration yields (the number of electron-hole pairs produced per absorbed photon) up to 30% on sub-picosecond timescales in neat regioregular poly(3-hexylthiophene) films. This is difficult to reconcile with the accepted picture that Frenkel excitons are the primary photoexcitations. Their binding energy is much higher than the lattice thermal energy at room temperature, such that direct charge generation ought to be improbable. Considering this, two fundamental questions arise: (i) what is the mechanism of direct charge photogeneration in semicrystalline polymer semiconductors? (ii) What is the role of solid-state microstructure in defining it? Here, we combine transient photoluminescence and absorption probes and find that charge photogeneration at 10 K occurs continuously over sub-nanosecond timescales, and not by a diffusion-limited exciton dissociation at defect sites. Rather, we conclude that it is an extrinsic process that occurs efficiently by dissociation of excitons localised at interfaces between crystalline and non-crystalline domains, and is driven by interfacial energetic disorder. Bio: Carlos Silva, Canada Research Chair in Organic Semiconductor Materials, is Associate Professor of Physics at the Université de Montréal, having joined the department in 2005. He is the 2010 laureate of the Herzberg Medal of the Canadian Association of Physicists. He has extensive expertise in ultrafast optical probes of electronic dynamics in organic semiconductors with applications in optoelectronics. He obtained a PhD in chemical physics from the University of Minnesota in 1998 and was a Postdoctoral Research Associate in the Cavendish Laboratory of the University of Cambridge from 1998 to 2001. In 2001 he obtained an Advanced Research Fellowship from the UK Engineering and Physical Sciences Research Council, which he undertook at the Cavendish Laboratory. The central theme of his research programme concerns the understanding of electronic dynamics in organic semiconductors using transient photoluminescence and absorption spectroscopies.

13 years, 1 month

[Aspuru-Guzik group list] Group Travel Calendar

by Anna B. Shin

Dear Group, It has come to my attention that some of you have yet to inform me of your time away from lab. I want to emphasize the importance of maintaining an accurate Group Travel Calendar. First, it is a great resource for you and your colleagues to refer to when you're looking for each other. I can't tell you how many times people have asked me where so and so is, that they haven't seen them around, heard from them and/or are worried about them. Let's try to lessen the worries by communicating your travel dates, ok? Second, I have found that the calendar is extremely helpful when reviewing my Pcard expenses and your reimbursements. I need to have an accurate and complete business purpose for every transaction so this has helped me save time and not bug you as much. Third and final, we want to ensure a safe and secure environment here. I have experienced a scary incident in which a graduate student disappeared and no one knew where he was and he didn't reply to any email or phone calls. We were very stressed for a week and when we finally got a hold of his family, we found out he was in the hospital in serious condition. I do not want this to ever happen in our group so please be vigilant in informing me of your away dates regardless if they are personal or group-related. Let's prevent something like this from happening. Ever. Thank you for your cooperation. Best, Anna Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu/ <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…>

13 years, 1 month

[Aspuru-Guzik group list] oldest group computers

by Anna B. Shin

Dear Group, I need to collect at least 2 or 3 old group computers to give to FAS IT for their computer exchange program. They require it for the exchange program that Alan and I have signed up for. I specifically need the complete set: desktop, monitor, keyboard, and mouse. I may have nappy mice/keyboards in my office, but let's throw them together and find the nappiest to give to FAS IT. I know we are hording the retired computers from the graveyard for CEP use, but I still need at least 2 computers by Wed 13 April. I want the oldest, nappiest computers. We can also strip them of any useful parts if we opt. If possible, we also need to wipe them clean since IT will send them to outside vendor for recycling. Thanks, Anna Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu/ <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…>

13 years, 1 month

[Aspuru-Guzik group list] Fwd: Robin Santra's visit next week

by babb

Hi All, Please send me a note if you would like to meet Robin Santra, see below. Thanks Jim Babb, ITAMP Begin forwarded message: > From: Johannes Feist <johannes.feist(a)gmail.com> > Date: March 25, 2011 2:10:47 PM EDT > > Subject: Robin Santra's visit next week > > Dear all, > > Robin Santra will be visiting ITAMP and giving the JAPC next week. He > (a former ITAMP postdoc) is the director of the theory division at the > CFEL (the Center for Free Electron Laser Science of DESY, the > University of Hamburg and the Max Planck Society). He is an expert in > (multi-)electron dynamics in strong fields. > > He will be here from Monday to Thursday next week, so there should be > plenty of time for discussions. Please let me know if you want to meet > with him and I will set up a schedule. > > Best wishes, > Johannes > > Johannes Feist > ITAMP > Harvard-Smithsonian Center for Astrophysics & Harvard Physics Department > 60 Garden Street MS 14 > Cambridge, MA 02138, USA > +1 617-495-7773 > jfeist(a)cfa.harvard.edu

13 years, 1 month

[Aspuru-Guzik group list] Coffee tax

by Semion Saikin

Hi Guys, I've received secret instructions on coffeemaking art from shifu Ivan. The first step is called COLLECTING MONEY. This form is most simple and doesn't require much experience. To be true, everyone can be involved at this step. This is your choice and your right to support our coffee resources. For this time we keep the same rate as before ($20 for persons having 1 and more espresso per day). If you have less, reduce that amount proportionally. We need to act quickly, because only about 1/3 of a bag left! You can leave money on my desk with a proper note or just give me in person. Let's set up the money collection deadline to be this Friday. Best regards, Semion P. S. If you are tired of the Gold Selection Espresso, please let me know. ******************************************** 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 ********************************************

13 years, 1 month

[Aspuru-Guzik group list] Fwd: CECAM-Bremen update and abstract request, now with working link

by Alan Aspuru-Guzik

If anybody is interested in this workshop, let me know. Alán Aspuru-Guzik | Associate Professor Harvard University | Department of Chemistry and Chemical Biology 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu | http://about.me/aspuru ---------- Forwarded message ---------- From: Thomas Jansen <thomas.lacour(a)gmail.com> Date: Mon, Mar 28, 2011 at 7:58 AM Subject: CECAM-Bremen update and abstract request, now with working link To: Thomas Jansen <T.L.C.Jansen(a)rug.nl> My apologies. In the previous mail the link did not work. Here the link to the conference website work. All the best, Thomas Dear Invited Speakers and Active Researchers in the field of "Spectroscopy and quantum phenomena in large molecular aggregates", we would like to keep you informed that the CECAM-Workshop webpage of the related International Symposium has been updated, see: http://www.bccms.uni-bremen.de/en/events/cecam_sqp/ For Invited Speakers hotel accomodation and travel support up to a certain (economy) limit will be covered by the organisers (overseas Japan/US-WestCoast 800,- Euro; US-EastCoast and Israel 600,- Euro; Europe 400,- Euro and Germany 100,- Euro). ALL participants incl. the Organizers and Inv. Speakers will have to pay a registration fee of 250,- Euro. This will cover all local infrastructure support, all meals, reception, conference dinner, catering, etc. Partial support for hotel accomodation will be provided as well for a limited number of about 30 active participants on the postdoctoral level who are going to present posters. If you are from the U.S., you might also apply for support from the MCC Travel Award Program http://www.mcc.uiuc.edu/travel/ Deadline for registration and Talk/Poster-Abstract submission is April 30th; first-come, first-serve! Please, distribute the link concerning the workshop page and the program to your group members and further potential participants !!! Since only three month are left until the end of June, we would like to urge all invited speakers and active participants to register and to submit an abstract of your talks/posters for preparing the book of abstracts. We are looking forward seeing you soon in Bremen. On behalf of all organisers,

13 years, 1 month

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aspuru-list March 2011