Title

Cysteine-grafted chitosan-mediated gold nanoparticle assembly: from nanochains to microcubes

Authors

Authors

Y. Ding; G. Gu; X. H. Xia;Q. Huo

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abstract

Molecule-mediated nanoparticle assemblies were obtained by the rational design and modification of chitosan, and grafting it onto gold nanoparticles, providing a new way for combining the virtues of synthetic and biological polymers. Using thiolate-functionalized chitosan molecules as soft templates, gold nanoparticles were found to self-organize into 1D nanochains via specific molecular recognition, or assemble into 2D needle-like crystals and 3D flower clusters through conformational change of the template. Such clusters may further re-crystallize into gold single crystal microcubes by way of a simple dialysis method. The as-prepared nano- and microstructures were characterized and the mechanism for the gold nanoparticle assembly process and microcrystal formation was revealed. This work demonstrates a simple and novel approach for fabricating well defined gold nano- and microstructures through a controlled nanoparticle self-assembly process.

Journal Title

Journal of Materials Chemistry

Volume

19

Issue/Number

6

Publication Date

1-1-2009

Document Type

Article

First Page

795

Last Page

799

WOS Identifier

WOS:000262850400017

ISSN

0959-9428

Share

COinS