Preparation of metal@silica core-shell particle films by interfacial self-assembly

被引：19

作者：

Liu, Tao ^{[1
,2
]}

Li, Dongsheng ^{[1
,2
]}

Zou, Yu ^{[1
,2
]}

Yang, Deren ^{[1
,2
]}

Li, Hailong ^{[1
,2
]}

Wu, Yimin ^{[1
,2
]}

Jiang, Minhua ^{[3
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

[3] Shandong Univ, State Key Lab Crystal Growth, Jinan, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2010年 / 350卷 / 01期

关键词：

Nanoparticle; Self-assembly; Optical property; Surface plasmon; Surface-enhanced Raman scattering; ENHANCED RAMAN-SCATTERING; GOLD NANORODS; PLASMONIC MATERIALS; NANOPARTICLES; MONOLAYER; SPECTROSCOPY;

D O I：

10.1016/j.jcis.2010.05.092

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A universal self-assembly method is used to prepare a series of large-area silica-coated metal particle (metal@silica) films at the hexane/water interface. The decrease of hexane/water interfacial energy after the particle adsorption leads to the formation of films. Since external silica shells eliminate the coupling between neighboring metal core particles, the extinction peaks of closely packed metal@silica particle films are as narrow as those of monodispersed metal particles. In the detection of Raman scattering signals of R6G dyes by shell-isolated nanoparticle-enhanced Raman spectroscopy, the use of metal@silica particle films resulted in an average enhancement by a factor of 10(5). (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：58 / 62

页数：5

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