Synthesis,optical, electrochemical and electroluminescent properties of novel fluorene-alt-bithiophene copolymers bearing phenylvinyl bridged accepting side chains |
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| Authors: | Jiefeng Hai Enwei Zhu Linyi Bian Jin Wang Zixuan Wang Yang Li Liangming Yin Fujun Zhang Weihua Tang |
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| Institution: | 1. Key Laboratory of Soft Chemistry and Functional Materials (Ministry of Education of China), Nanjing University of Science and Technology, Nanjing 210094, People’s Republic of China;2. Key Laboratory of Luminescence and Optical Information (Ministry of Education of China), Beijing Jiaotong University, Beijing 100044, People’s Republic of China |
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| Abstract: | Two-dimensional polyfluorene-alt-bithiophene] backboned copolymers were prepared by introducing phenylvinyl bridged accepting side chain containing malononitrile, 1,3-indanedione, or 4-nitrophenyl acetonitrile accepting moiety. The structural, optical, electroluminescent, electrochemical properties of these polymers were studied in details. These polymers possess good thermal stability and low highest occupied molecular orbital (HOMO) level (−5.59 to 5.67 eV). Results show that the introduction of π-conjugated accepting side chains can effectively adjust the optical and electrochemical properties of the resulting polymers. These new alternating copolymers may be promising electroluminescent materials. |
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| Keywords: | Two-dimensional polymer Polyfluorene Lighting-emitting diodes Bandgap |
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