End-capping of conjugated thiophene-benzene aromatic systems

ORGN 410

Brigitte Wex, brigitte.wex@lau.edu.lb, Division of Natural Sciences, Lebanese American University, P.O. Box 36 Code 22, Byblos, Lebanon, Bilal R. Kaafarani, bilal.kaafarani@aub.edu.lb, Department of Chemistry, American University of Beirut, Beirut, Lebanon, and Douglas C. Neckers, Center for Photochemical Sciences, Bowling Green State University, 132 Overman Hall, Bowling Green, OH 43403.
Conjugated polycyclic aromatic systems are excellent candidates for optoelectronic device applications. Our target compounds, ring systems of alternating benzene and thiophene units have shown promising field-effect mobilities in organic-field effect transistor applications. In device geometry, these materials exhibited a strong hysteresis and high turn-on voltage. In this talk, we present our strategies to address the observed hysteresis by end-capping the materials and the results of spectroscopic and electrochemical analyses.

 

Materials, Devices, and Switches
8:00 AM-12:00 PM, Tuesday, August 21, 2007 BCEC -- 258A, Oral

Division of Organic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007