Poly(N-vinylcarbazole) star polymers and amphiphilic star block copolymers by xanthate-mediated controlled radical polymerization

被引：51

作者：

Mori, Hideharu ^{[1
]}

Ookuma, Hiroshi ^{[1
]}

Endo, Takeshi ^{[2
]}

机构：

[1] Yamagata Univ, Grad Sch Sci & Engn, Dept Polymer Sci & Engn, Yonezawa, Yamagata 9928510, Japan

[2] Kinki Univ, Mol Engn Inst, Fukuoka 8208555, Japan

来源：

MACROMOLECULES | 2008年 / 41卷 / 19期

关键词：

D O I：

10.1021/ma801266h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Four-arm poly(N-vinylcarbazole), poly(NVC), stars were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization/macromolecular design via interchange of xanthates (MADIX) using three different xanthate-type tetrafunctional chain transfer agents (CTAs). Two Z-designed CTAs having different R (leaving) groups, in which the Z (stabilizing) groups are linked to the core, and one R-designed CTA were compared. The R-group approach was found to be the most efficient for the controlled synthesis of four-arm poly(NVC) stars having a low polydispersity and controlled molecular weights. Amphiphilic star block copolymers were synthesized by the polymerization of NVC using the poly(acrylic acid) star, which was prepared from the R-designed tetrafunctional CTA. The characteristic assembled structures and optical properties of the amphiphilic star block copolymers in selective solvents were investigated by dynamic light scattering (DLS), UV-vis, and fluorescence spectroscopic methods.

引用

页码：6925 / 6934

页数：10

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