A Case of Adaptive Self-Assembly

doi:10.1021/nn203453c

CORC > 北京大学 > 化学与分子工程学院

	A Case of Adaptive Self-Assembly
	Ding, Yi ; Yang, Yang ; Yang, Lu ; Yan, Yun ; Huang, Jianbin ; Stuart, Martien A. Cohen
刊名	acs nano
	2012
关键词	electrostatic micelles uptake coordination polymers redox METALLO-SUPRAMOLECULAR POLYMERS PHASE-TRANSITION SPIN-CROSSOVER POLYELECTROLYTE COMPLEX LIGAND
DOI	10.1021/nn203453c
英文摘要	We report in this paper direct observation of redox-induced uptake of a charged species in micelles with a complex coacervate core, using a system consisting of negatively charged iron-coordination polymers and positively charged-b-neutral block co-polyelectrolytes. Neutral, charge-balanced micelles are first prepared by stoichiometric mixing of the oppositely charged components. Upon a redox stimulus, the micelles develop excess charges, which (as proposed In our previous work) most likely lead to sequestration of oppositely charged species, as the charge balance has to be restored. In this work we verify this prediction by using a rigid, rod-like iron coordination polymer, namely, the positively charged MEPE, as the species to be taken up. After uptake of this rigid cargo, the morphology of the micelles was found to transform from spheres to banana-shaped bundles and fibers, which clearly indicate the uptake of MEPE in the micellar core. Our result proves that the redox stimulus indeed induces excess charges In the core, which forces the self-assembled particles to change both composition and shape. As an interesting example of "adaptive self-assembly", our findings also pave the way to novel redox-triggered uptake and release systems.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000300757900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; SCI(E); EI; PubMed; 9; ARTICLE; 2; 1004-1010; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/149922]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Ding, Yi,Yang, Yang,Yang, Lu,et al. A Case of Adaptive Self-Assembly[J]. acs nano,2012.
APA	Ding, Yi,Yang, Yang,Yang, Lu,Yan, Yun,Huang, Jianbin,&Stuart, Martien A. Cohen.(2012).A Case of Adaptive Self-Assembly.acs nano.
MLA	Ding, Yi,et al."A Case of Adaptive Self-Assembly".acs nano (2012).