Caltech Logo

Organic Chemistry Seminar

Wednesday, October 23, 2013
4:00pm to 5:00pm
Add to Cal
Noyes 153 (J. Holmes Sturdivant Lecture Hall)
Bottom-up Synthesis of Structurally Precise Organic Materials and Interfaces
William R. Dichtel, Assistant Professor, Department of Chemistry and Chemical Biology, Cornell University,

     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 functional building blocks into covalent organic frameworks (COFs) that have two-dimensional layered morphologies ideal for energy storage and conversion devices. 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.

For more information, please contact Arleen (Lynne) Martinez by phone at 626-395-4004 or by email at lynnem@caltech.edu.