Novel low??bandgap oligothiophene??based donor??acceptor alternating conjugated copolymers: Synthesis, properties, and photovoltaic applications

…, C Wang, H Li, H Lu, B Xu, W Tian

Index: Li, Yaowen; Li, Zaifang; Wang, Chunyu; Li, Hui; Lu, Hongguang; Xu, Bin; Tian, Wenjing Journal of Polymer Science, Part A: Polymer Chemistry, 2010 , vol. 48, # 13 p. 2765 - 2776

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Citation Number: 30

Abstract

Abstract A series of novel soluble donor-acceptor low-bandgap-conjugated polymers consisting of different oligothiophene (OTh) coupled to electron-accepting moiety 2-pyran-4- ylidenemalononitrile (PM)-based unit were synthesized by Stille or Suzuki coupling polymerization. The combination of electron-accepting PM building block with varied OTh n (the number of thiophene unit increases from 3 to 5) results in enhanced π–π stacking in ...