Synthesis of a soluble polythiophene copolymer with thiophene-vinylene conjugated side chain and its applications in photovoltaic devices - Qu, Bo; Jiang, Zhongliang; Chen, Zhijian; Xiao, Lixin; Tian, Di; Chao Gao; Wei Wei; Qihuang Gong (JOURNAL OF APPLIED POLYMER SCIENCE, 2012)