Synthesis and characterization of a catenated polystyrene-poly(2-vinylpyridine) block copolymer

被引：24

作者：

Gan, YD

Dong, DH

Hogen-Esch, TE ^{[1
]}

机构：

[1] Univ So Calif, Loker Hydrocarbon Inst, Los Angeles, CA 90089 USA

[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

来源：

MACROMOLECULES | 2002年 / 35卷 / 18期

关键词：

D O I：

10.1021/ma0112624

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis, isolation, and characterization are reported of a polystyrene-poly(2-vinylpyridine) block copolymer "catenane" with a molecular weight of about 10 000 and containing about equal masses of each of the rings. This catenane is prepared by end-to-end coupling of a P2VP dianion lithium salt with 1,4-bis(bromomethylbenzene) in THF in the presence of a PS macrocycle.(M-p = 4500). The catenane was isolated by precipitation-extraction procedures that were optimized using a 50/50 PS-b-P2VP macrocycle as a model for the catenane. The catenane copolymer was characterized by SEC, H-1 NMR, and emission (fluorescence) spectroscopy.

引用

页码：6799 / 6803

页数：5

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