Journal article
Synthetic principles directing charge transport in low-band-gap dithienosilole-benzothiadiazole copolymers
PM Beaujuge, HN Tsao, MR Hansen, CM Amb, C Risko, J Subbiah, KR Choudhury, A Mavrinskiy, W Pisula, JL Brédas, F So, K Müllen, JR Reynolds
Journal of the American Chemical Society | Published : 2012
DOI: 10.1021/ja301898h
Abstract
Given the fundamental differences in carrier generation and device operation in organic thin-film transistors (OTFTs) and organic photovoltaic (OPV) devices, the material design principles to apply may be expected to differ. In this respect, designing organic semiconductors that perform effectively in multiple device configurations remains a challenge. Following "donor-acceptor" principles, we designed and synthesized an analogous series of solution-processable π-conjugated polymers that combine the electron-rich dithienosilole (DTS) moiety, unsubstituted thiophene spacers, and the electron-deficient core 2,1,3-benzothiadiazole (BTD). Insights into backbone geometry and wave function delocal..
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Awarded by Seventh Framework Programme
Funding Acknowledgements
We acknowledge the funding of this work as follows. J.RR: the Air Office of Scientific Research (FA9550-09-1-0320) for new materials development. J.RR. and F.S.: the Office of Naval Research (N00014-11-1-0245) for transport measurements and device construction/testing. J.-L.B.: the Office of Naval Research (N00014-11-1-0211) for computational studies. KM.: the German Science Foundation (Korean-German IR TG), the European Community's Seventh Framework Programme ONE-P (grant agreement no. 212311), DFG Priority Program SPP 1355, DFG MU 334/32-1, DFG Priority Program SPP 1459, and ESF Project GOSPEL (ref no.: 09-EuroGRAPHENE-FP-001) for characterization studies. M.R.H. acknowledges Dr. Robert Graf for helpful discussions and Prof. Hans Wolfgang Spiess for his continued support. P.M.B. acknowledges Dr. Uwe Rietzler and Dr. Rudiger Berger for their support at the AFM facilities of MPIP-Mainz.