High-yield synthesis of multi-branched gold nanoparticles and their surface-enhanced Raman scattering properties

被引：110

作者：

Jeong, Gyoung Hwa ^{[1
]}

Lee, Young Wook ^{[1
]}

Kim, Minjung ^{[1
]}

Han, Sang Woo ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, Natl Core Res Ctr, Res Inst Nat Sci & Environm Biotechnol, Dept Chem, Jinju 660701, South Korea

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 329卷 / 01期

关键词：

Multi-branched gold nanoparticles; Hydrazine; SERS; Aspect ratio; ANISOTROPIC METAL NANOPARTICLES; PLATINUM NANOPARTICLES; OPTICAL-PROPERTIES; NANOCRYSTALS; SILVER; SHAPE; GROWTH; EVOLUTION; SIZE; SPECTROSCOPY;

D O I：

10.1016/j.jcis.2008.10.004

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：

Multi-branched gold nanoparticles were synthesized in high-yield through the reduction of HAuCl4 by using hydrazine as a reducing agent. Practically 100% of the particles have numerous branches. The high reduction capability of hydrazine is found to be crucial for the formation of these branched gold nanoparticles. Their size can be controlled from 20 to 130 nm by varying the amounts of hydrazine. The prepared nanoparticles exhibit efficient surface-enhanced Raman scattering (SERS) properties and the SERS activity of the particles depends on the aspect ratio of their branches, which are most likely related to a great increase in the localized electromagnetic field enhancement from their unique Sharp Surface features arising from the branches. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：97 / 102

页数：6

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