Department of Chemistry
Regioregular pyridal[2,1,3]thiadiazole π-conjugated copolymers
π-Conjugated, narrow band gap copolymers containing pyridal[2,1,3] thiadiazole (PT) were synthesized via starting materials that prevent random incorporation of the PT heterocycles relative to the backbone vector. Two regioregular structures could be obtained: in one the PTs are oriented in the same direction, and in the other the orientation of the PTs alternates every other repeat unit. Compared to their regiorandom counterparts, the regioregular polymers exhibit a 2 orders of magnitude increase of the hole mobilites, from 0.005 to 0.6 cm2 V-1 s-1, as determined by field-effect transistor measurements. © 2011 American Chemical Society.
Source Publication Title
Journal of the American Chemical Society
American Chemical Society
Link to Publisher's Edition
Ying, Lei, Ben B. Y. Hsu, Hongmei Zhan, Gregory C. Welch, Peter Zalar, Louis A. Perez, Edward J. Kramer, Thuc-Quyen Nguyen, Alan J. Heeger, Wai-Yeung Wong, and Guillermo C. Bazan. "Regioregular pyridal[2,1,3]thiadiazole π-conjugated copolymers." Journal of the American Chemical Society 133.46 (2011): 18538-18541.