Supramolecular self-assembly through inclusion complex formation between poly(ethylene oxide-b-N-isopropylacrylamide) block copolymer and α-cyclodextrin

被引：39
|
作者：
Tu, Cheng-Wei [1 ]
Kuo, Shiao-Wei [2 ]
Chang, Feng-Chih [1 ]
机构：
[1] Natl Chiao Tung Univ, Inst Appl Chem, Hsinchu 30050, Taiwan
[2] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Dept Mat & Optoelect Sci, Kaohsiung 80424, Taiwan
来源：
POLYMER | 2009年 / 50卷 / 13期
关键词：
Cyclodextrin; Inclusion complexes; Block copolymer; OXIDE) TRIBLOCK COPOLYMERS; MOLECULAR-WEIGHT; COMPOUND FORMATION; POLYMERS; POLYROTAXANES; GLYCOL); POLYPSEUDOROTAXANES;
D O I：
10.1016/j.polymer.2009.04.034
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A well-defined poly(ethylene oxide-block-N-isopropylacrylamide) (PEO-b-PNIPAM) diblock copolymer was synthesized by atom transfer radical polymerization and formed the inclusion complexes (ICs) after selective threading of the PEO segment of the block copolymer through the cavities of alpha-cyclodextrin (alpha-CD) units. The formation of the alpha-CD/PEO ICs between alpha-CD and PEO segment of the PEO-b-PNIPAM transformed the system from its original random coil conformation into a rod/coil-like structure. The stacking of the alpha-CD/PEO ICs and phase separation within the alpha-CD/PEO-b-PNIPAM IC resulted in the self-assembly of long-range-ordered lamellar structure exhibiting alternating layers of (i) alpha-CD/PEO ICs with hexagonally packed plates and (ii) amorphous phase of unincluded PEO/PNIPAM with brush conformation. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2958 / 2966
页数：9
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