Synthesis and characterization of liquid crystalline side‐chain block copolymers containing luminescent 4,4′‐bis(biphenyl)fluorene pendants |
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| Authors: | Kuan‐Wei Lee Hong‐Cheu Lin |
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| Affiliation: | 1. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China;2. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of ChinaDepartment of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, Republic of China |
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| Abstract: | A series of new liquid crystalline homopolymers, copolymers, and block copolymers were polymerized from styrene‐macroinitiator ( SMi ) and methacrylates with pendent 4,4′‐bis(biphenyl)fluorene ( M1 ) and biphenyl‐4‐ylfluorene ( M2 ) groups through atom transfer radical polymerization (ATRP). The number‐average molecular weights (Mn) of polymers P1 ‐ P4 were 10,007, 14,852, 6,275, and 10,463 g mol?1 with polydispersity indices values of 1.21, 1.15, 1.31, and 1.22, respectively. All polymers exhibit the nematic phase. The thermal, mesogenic, and photoluminescent properties of all polymers were investigated. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 4564–4572, 2007 |
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| Keywords: | atom transfer radical polymerization block copolymers liquid crystalline polymer photoluminescence |
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