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Synthesis and Characterization of Novel Mesogen-Jacketed Liquid Crystalline Miktoarm Star Rod-Coil Block Copolymer

✍ Scribed by Jianfang Chen; Xingzhu Wang; Xiaojuan Liao; Hailiang Zhang; Xiayu Wang; Qifeng Zhou

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
178 KB
Volume
27
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: A series of novel mesogen‐jacketed liquid crystal miktoarm star rod‐coil block copolymers were synthesized via atom transfer radical polymerization (ATRP). Their architectures {coil conformation of styrene segment and rigid rod conformation of {2,5‐bis[(4‐methoxyphenyl)oxycarbonyl]styrene} (MPCS) segment} were confirmed by GPC, ^1^H NMR, and MALDI‐TOF studies. The liquid crystalline behaviors of the synthesized copolymers are evidenced from POM observation. The liquid crystalline phase depends on the molecular weights of the rigid rod arm of miktoarm star copolymers.

Miktoarm star rod‐coil block copolymer.

magnified imageMiktoarm star rod‐coil block copolymer.

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✍ Wan, Xinhua; Tu, Yingfeng; Zhang, Dong; Zhou, Qifeng 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 97 KB 👁 2 views

The synthesis of rod±coil diblock copolymers with narrow polydispersity was achieved for the ®rst time by TEMPO-mediated `living' free radical polymerization of styrene and 2,5-bis[(4methoxyphenyl)oxycarbonyl]styrene. The block architecture of the two diblock copolymers thus prepared, MPCS-block-St