New moderate bandgap polymers containing alkoxysubstituted??benzo [c][1, 2, 5] thiadiazole and thiophene??based units

…, WJ Belcher, PC Dastoor, AC Grimsdale

Index: Lim, Zheng Bang; Xue, Bofei; Bomma, Swarnalatha; Li, Hairong; Sun, Shuangyong; Lam, Yeng Ming; Belcher, Warwick J.; Dastoor, Paul C.; Grimsdale, Andrew C. Journal of Polymer Science, Part A: Polymer Chemistry, 2011 , vol. 49, # 20 p. 4387 - 4397

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Citation Number: 16

Abstract

Abstract Alkoxysubstituted benzo [c][1, 2, 5] thiadiazole electron accepting units were prepared and copolymerized with various thiophene-based electron donating monomers to produce new low bandgap polymers P1–4. The materials showed broad absorption in the range from 300 to 700 nm with bandgaps below 2 eV in solution. Efficiencies of over 1% were obtained from photovoltaic cells using P4 with PCBM as acceptor.© 2011 Wiley ...