Counterions in polyelectrolyte multilayers: A vehicle for introducing functionalities

被引:11
作者
Zan, Xingjie [1 ,2 ]
Su, Zhaohui [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China
基金
中国国家自然科学基金;
关键词
Multilayers; Self-assembly; Counterion; Ion exchange; Nanoparticles; SELECTIVE HYDROGENATION; HYDROPHILIC MOLECULES; THIN-FILMS; NANOPARTICLES; RELEASE; NANOREACTORS; ADSORPTION; GROWTH; DYE;
D O I
10.1016/j.tsf.2009.06.045
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Counterions present at the surface of polyelectrolyte multilayers were utilized for the introduction of charged species into the multilayer via ion exchange. A typical polyelectrolyte multilayer film with Na+ counterions in the outermost layer was immersed in an AgNO3 aqueous solution and the rapid ion-exchange process was complete within 1 min. The silver ions thus introduced were then reduced in situ and silver nanoparticles were produced at the surface of the multilayer assembly. This example demonstrates that the counterions naturally occurring in every polyelectrolyte multilayer film can be a convenient vehicle for the introduction of various functionalities to the film. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:116 / 119
页数:4
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