Living cationic sequential block copolymerization: synthesis and characterization of poly(4-(2-hydroxyethyl)styrene-b-isobutylene-b-4-(2-hydroxyethyl)styrene) triblock copolymers
โ Scribed by Wu, Yi-bo; Ren, Ping; Guo, Wenli; Li, Shu-xin; Yang, Xiao-ping; Shang, Yu-wei
- Book ID
- 109973013
- Publisher
- Nature Publishing Group
- Year
- 2010
- Tongue
- English
- Weight
- 336 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0032-3896
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Synthesis of poly(styrene-b-tetrahydrofuran (THF)-b-styrene) triblock copolymers was performed by transformation from living cationic into living radical polymerization, using 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (4-hydroxy-TEMPO) as a transforming agent. Sodium 4-oxy-TEMPO, derived from 4
## Abstract Relatively low thermal stability of secondโorder nonlinear optical (NLO) coefficient due to the relaxation of dipole orientation is a major problem limiting the practical application of these NLO polymers. NLO polymers with suitable __T~g~__ are always important for optical devices. In