Highly Sensitive, Uniform, and Reproducible SurfaceEnhanced Raman Spectroscopy from Hollow Au-Ag Alloy Nanourchins

被引：263

作者：

Liu, Zhen ^{[1
]}

Yang, Zhongbo ^{[1
]}

Peng, Bo ^{[2
]}

Cao, Cuong ^{[2
]}

Zhang, Chao ^{[3
]}

You, Hongjun ^{[1
]}

Xiong, Qihua ^{[2
]}

Li, Zhiyuan ^{[3
]}

Fang, Jixiang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Sci, State Key Lab Mech Behav Mat, Xian 710049, Shann Xi, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 15期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

surface-enhanced Raman spectroscopy; nanourchins; hollow Au-Ag alloy; sensitivity; reproducibility; SILVER NANOPARTICLES; SCATTERING; ARRAYS; FABRICATION; ASSEMBLIES; CHLORIDE; CRYSTAL; DIMERS;

D O I：

10.1002/adma.201305106

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A hierarchical nanoparticle strategy to simultaneously gain super Raman signal amplification, high uniformity, and reproducibility is presented. Using hollow Au-Ag alloy nanourchins, an ultrahigh sensitivity, e.g., down to 1 fM concentrations for DEHP molecule is obtained. A small standard deviation of <10% is achieved by simply dropping and evaporating sub-100 nm nanourchins onto a substrate. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2431 / 2439

页数：9

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