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Published August 5, 2003 | Supplemental Material
Journal Article Open

Columnar Discotic Liquid-Crystalline Oxadiazoles as Electron-Transport Materials

Abstract

A range of discoid species with benzene or triazine cores and three (trialkoxyaryl)oxadiazole arms have been synthesized. 1,3,5-tris{5-[3,4,5-tris(octyloxy)phenyl]-1,3,4-oxadiazol-2-yl}benzene has been studied in detail; it exhibits a columnar discotic liquid-crystalline mesophase between 38 and about 210 °C. The time-of-flight electron mobility at room-temperature varies from about 10^(-3) to 10^(-4) cm^2 V^(-1) s^(-1), indicating these materials may find applications in organic electronics.

Additional Information

© 2003 American Chemical Society. Received January 28, 2003. In Final Form: April 7, 2003. Publication Date (Web): May 10, 2003. This material is based upon work supported in part by the STC Program of the National Science Foundation under Agreement No. DMR-0120967. We also gratefully acknowledge the NSF for a CAREER grant to B.K. and the Air Force Office of Scientific Research (through the LC MURI), the Office of Naval Research, the Defense Advanced Research Program Agency, and the National Renewable Energy Laboratory for financial support. We also thank the reviewers for helpful comments.

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