Supramolecular ABA triblock copolymer with polyrotaxane as B block and   its hierarchical self-assembly

doi:10.1021/ma800632m

CORC > 北京大学 > 化学与分子工程学院

	Supramolecular ABA triblock copolymer with polyrotaxane as B block and its hierarchical self-assembly
	Ren, Lixia ; Ke, Fuyou ; Chen, Yongming ; Liang, Dehai ; Huang, Jin
刊名	macromolecules
	2008
关键词	ALPHA-CYCLODEXTRINS POLY(ETHYLENE GLYCOL) POLYPSEUDOROTAXANES IMIDAZOLE NECKLACE CHAIN
DOI	10.1021/ma800632m
英文摘要	A series of novel well-defined supramolecular ABA triblock copolymers of polyrotaxane are synthesized via atom transfer radical polymerization (ATRP) of 2-(dimethylamino)ethyl methacrylate (DMA) initiated by a polypseudorotaxane initiator of alpha-cyclodextrins (alpha-CDs) and PEG. The molecular structure of the ABA triblock copolymer with a polyrotaxane as B block, poly(2-(dimethylamino)ethyl methacrylate)-b-PEG[included by alpha-CDs]-b-poly(2-(dimethylamino)ethyl methacrylate) (DMA-b-PEGCD-b-DMA), was confirmed by two-dimensional rotating frame Overhauser effect spectroscopy (2D ROESY) and X-ray diffraction (XRD) analyses. Self-assembly behaviors of the copolymers in water solution were studied by dynamic light scattering (DLS), static light scattering (SLS), and transmission electron microscopy (TEM). Different from the model triblock copolymer without alpha-CDs and the polypseudorotaxanes composed of homo-PEG and alpha-CDs, the supramolecular triblock copolymers in water self-assembled into spheres with an amorphous core. Furthermore, the block copolymers at an acidic aqueous solution where the flanking chains were protonated generated the particles with a core of hexagonally packed polyrotaxanes. It is interesting to notice that the particles further aggregated into large disks induced by the solvent evaporation.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000257665900030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); EI; 54; ARTICLE; 14; 5295-5300; 41
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/248372]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Ren, Lixia,Ke, Fuyou,Chen, Yongming,et al. Supramolecular ABA triblock copolymer with polyrotaxane as B block and its hierarchical self-assembly[J]. macromolecules,2008.
APA	Ren, Lixia,Ke, Fuyou,Chen, Yongming,Liang, Dehai,&Huang, Jin.(2008).Supramolecular ABA triblock copolymer with polyrotaxane as B block and its hierarchical self-assembly.macromolecules.
MLA	Ren, Lixia,et al."Supramolecular ABA triblock copolymer with polyrotaxane as B block and its hierarchical self-assembly".macromolecules (2008).