Developing control of solid-state structure of oligothiophene and oligoacene derivatives

ORGN 757

Anatoliy Sokolov, tony-sokolov@uiowa.edu and Leonard R. MacGillivray, len-macgillivray@uiowa.edu. Department of Chemistry, University of Iowa, 305 Chemistry Building, Iowa City, IA 52242
Solid-state structure of organic molecules is an important topic in the field of organic semiconductors. In this context, face-to-face stacking of such semiconductor molecules in the solid-state is desired to achieve optimum p-orbital overlap. In this presentation we will describe a general method of enforcing the face-to-face stacking of the semiconductor building blocks (SBBs), based on oligothiophenes and oligoacenes, which have emerged as the leading candidates in the field. The method described is based co-crystallization of SBBs with a secondary molecule, termed semiconductor co-crystal former (SCCF). The SCCF, based on a ditopic hydrogen bond donor, such as resorcinol, serves to enforce a face-to-face orientation of the molecules within the solid state. Analysis of thiophene and acene based materials will be presented with an emphasis on structural details.

 

Materials, Devices, and Switches
8:00 AM-12:00 PM, Thursday, March 29, 2007 McCormick Place Lakeside -- Room E450 A/B, Level 4, Oral

Division of Organic Chemistry

The 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007