Side-chain pseudopolyrotaxanes by threading cucurbituril[6] onto   quaternized poly-4-vinylpyridine derivative: Synthesis and properties

doi:10.1016/j.polymer.2006.05.046

CORC > 北京大学 > 化学与分子工程学院

	Side-chain pseudopolyrotaxanes by threading cucurbituril[6] onto quaternized poly-4-vinylpyridine derivative: Synthesis and properties
	Hou, Zhaosheng ; Tan, Yebang ; Zhou, Qifeng
刊名	polymer
	2006
关键词	pseudopolyrotaxanes cucurbituril[6] self-assembly FREE-RADICAL POLYMERIZATION INCLUSION COMPLEXES MAIN-CHAIN POLY(PROPYLENE GLYCOL) MOLECULAR NECKLACE ALPHA-CYCLODEXTRIN BETA-CYCLODEXTRIN CONDUCTING POLYMETALLOROTAXANES 2-DIMENSIONAL POLYROTAXANE INCORPORATING CUCURBITURIL
DOI	10.1016/j.polymer.2006.05.046
英文摘要	A novel side-chain pseudopolyrotaxanes 4 is synthesized from cucurbituril (CB[6]) and quaternized poly-4-vinylpyridine derivative 3 in water by simple stirring at room temperature. CB[6] beads are localized on hexamethylene units in side chains of 3 as found by NMR studies, and the hydrophobic and charge-dipole interactions are the driving force. The degree of threading (q/n, the average number of CB[61 beads per repeat recognition unit of 3) can be controlled from 0.2 to 1.0 by controlling the amount of CB[6] added. The reduced viscosity of pseudopolyrotaxanes in aqueous solution has smaller change with the change of the concentration or temperature, which is consistent with the hydrodynamic radius and more rigid chain conformation because of the threaded CB[6]. DLS results show the average hydrodynamic diameter (D-h) of the pseudopolyrotaxanes in solution increases with the increasing of CB[61 threaded. The pseudopolyrotaxanes have higher thermal stability and intensity of absorption band than the parent polymer 3 as found by TGA and UV-vis studies. The decomposition temperature and intensity of absorption increase with increasing amount of CB[6] threaded. The effect of NaI to pseudopolyrotaxanes is studied by the transmittance with UV-vis, and the result shows that NaI is the satisfied precipitant to the pseudopolyrotaxanes. (c) 2006 Elsevier Ltd. All rights reserved.; Polymer Science; SCI(E); EI; 19; ARTICLE; 15; 5267-5274; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/251893]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Hou, Zhaosheng,Tan, Yebang,Zhou, Qifeng. Side-chain pseudopolyrotaxanes by threading cucurbituril[6] onto quaternized poly-4-vinylpyridine derivative: Synthesis and properties[J]. polymer,2006.
APA	Hou, Zhaosheng,Tan, Yebang,&Zhou, Qifeng.(2006).Side-chain pseudopolyrotaxanes by threading cucurbituril[6] onto quaternized poly-4-vinylpyridine derivative: Synthesis and properties.polymer.
MLA	Hou, Zhaosheng,et al."Side-chain pseudopolyrotaxanes by threading cucurbituril[6] onto quaternized poly-4-vinylpyridine derivative: Synthesis and properties".polymer (2006).