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Seminar 12/12/2012 - William Dichtel, Cornell University: Bottom-up Synthesis of Structurally Precise Organic Materials and Interfaces

Abstract: It remains difficult to assemble molecular and polymeric compounds predictably, yet such control has strong implications for the properties of bulk materials and molecular interfaces. For example, the continuing development of inexpensive organic semiconductors will bring about efficient solar cells, flexible displays, ubiquitous radio frequency identification (RFID) tags, improved lighting technologies, and more sensitive chemical sensors. These materials must achieve long-range overlap of their molecular orbitals to transport excitons or charge efficiently. I will describe our efforts to organize complementary organic semiconductors into covalent organic frameworks (COFs) that have two-dimensional layered morphologies ideal for photovoltaic performance. I will also describe a modular strategy to functionalize graphene noncovalently with multivalent tripodal binding motifs. Finally, I will present progress towards the bottom-up synthesis of narrow strips of carbon known as graphene nanoribbons.

Bio: William Dichtel received a B.S. from MIT and Ph.D. from UC-Berkeley, both in Chemistry. His graduate research was advised by Jean M. J. Fréchet. He performed postdoctoral research in the groups of Fraser Stoddart (then at UCLA) and James Heath (Caltech) from 2005-2008. In 2008, Dichtel accepted an appointment as an assistant professor in the Department of Chemistry and Chemical Biology at Cornell University. He is a recent recipient of the NSF CAREER, 3M Nontenured Faculty Award, an Alfred P. Sloan Fellowship, the Research Corporation Cottrell Scholar Award, and the Arthur C. Cope Scholar Award from the American Chemical Society.

All seminars are held on Wednesdays from 12:00 noon-1:00 p.m. in the Bowen Hall Auditorium Room 222. A light lunch is provided at 11:30 a.m. in the Bowen Hall Atrium immediately prior to the seminar.

Location: Bowen Hall Auditorium

Date/Time: 12/12/12 at 12:00 pm - 12/12/12 at 1:00 pm

Category: PRISM/PCCM Seminar Series

Department: PRISM