Optical,electrochemical, and photovoltaic properties of conjugated polymers with dithiafulvalene as side chains |
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| Authors: | Chuantao Gu Zhengkun Du Wenfei Shen Xichang Bao Shuguang Wen Dangqiang Zhu Ting Wang Ning Wang Renqiang Yang |
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| Affiliation: | 1. CAS Key Laboratory of Bio‐based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China;2. University of Chinese Academy of Sciences, Beijing, China;3. Institute of Hybrid Materials, Laboratory of New Fiber Materials and Modern Textile—The Growing Base for State Key Laboratory, Qingdao University, Qingdao, China |
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| Abstract: | Three conjugated polymers, P1–P3, with dithiafulvalene (DTF) as side chains have been synthesized. All polymers have good thermal stabilities. The DTF unit could be oxidized to DTF?+ which was observed from cyclic voltammetry and ultraviolet–visible (UV–vis) spectra, and the oxidation process was independent of the conjugated backbone of the polymer. The strong π–π* transition absorbing band of the three polymers decreases gradually as increasing oxidation, and the resulting DTF?+ species give rise to an additional band at 750–1100 nm, which can be assigned to a distinguishing feature of the cation radical species. Photovoltaic device based on the blend of P2 and [6,6]‐phenyl‐C61‐butyric acid methyl ester (PC61BM) showed the power conversion efficiency of 1.05% with a fill factor of 42.8%. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41508. |
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| Keywords: | adsorption applications copolymers electrochemistry |
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