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UV light-induced self-assembly of gold nanocrystals into chains and networks in a solution of silver nitrate.

UV light-induced self-assembly of gold nanocrystals into chains and networks in a solution of silver nitrate.

Authors :
Shu Jun Zhen
Zhong Yue Zhang
Na Li
Zhi Dong Zhang
Jian Wang
Chun Mei Li
Lei Zhan
Hong Lin Zhuang
Cheng Zhi Huang
Source :
Nanotechnology; 2013, Vol. 24 Issue 5, p1-8, 8p
Publication Year :
2013

Abstract

Controllable assemblies of nanocrystals have attracted considerable interest because they often exhibit unique collective properties that differ from those displayed by individual nanocrystals and bulk samples. Reported approaches to prepare nanocrystal assemblies based on the molecular recognitions of small molecules or biomacromolecules are effective, but often require complicated and time-consuming modification processes of nanocrystals. In this paper, we demonstrate a simple and universal approach to assemble gold nanocrystals (AuNCs) into linear chains and complex networks in aqueous silver nitrate medium under irradiation with UV light without the involvement of any modification step. Due to the strong plasmon resonance coupling verified by finite difference time domain calculation, the assembled structures of AuNCs can be used as excellent surface-enhanced Raman scattering substrates and dark-field light-scattering bioimaging probes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09574484
Volume :
24
Issue :
5
Database :
Complementary Index
Journal :
Nanotechnology
Publication Type :
Academic Journal
Accession number :
90045692
Full Text :
https://doi.org/10.1088/0957-4484/24/5/055601