Synthesis and characterizations of poly(4‐alkylthiazole vinylene) |
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| Authors: | Xia Guo Haijun Fan Maojie Zhang Yu Huang Songting Tan Yongfang Li |
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| Affiliation: | 1. Key Laboratory of Advanced Functional Polymer Materials of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China;2. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China;3. CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China |
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| Abstract: | Two poly(thiazole vinylene) derivatives, poly(4‐hexylthiazole vinylene) (P4HTzV) and poly(4‐nonylthiazole vinylene) (P4NTzV), were synthesized by Pd‐catalyzed Stille coupling method. The polymers are soluble in common organic solvents such as o‐dichlorobenzene and chloroform, and possess good thermal stability. P4HTzV and P4NTzV films exhibit broad absorption bands at 400–720 nm with an optical bandgap of 1.77 eV and 1.74 eV, respectively. The HOMO (the highest occupied molecular orbital) energy levels of P4HTzV and P4NTzV are ?5.11 and ?5.12 eV, respectively, measured by cyclic voltammetry. Preliminary results of the polymer solar cells based on P4HTzV : PC61BM ([6,6]‐phenyl‐C‐61‐butyric acid methyl ester) (1 : 1, w/w) show a power conversion efficiency of 0.21% with an open‐circuit voltage of 0.55 V and a short circuit current density of 1.11 mA cm?2, under the illumination of AM1.5G, 100 mW cm?2. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | conjugated polymers poly(thiazole vinylene) bandgap polymer solar cells synthesis |
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