A sensitive SERS substrate based on Au/TiO2/Au nanosheets

被引：19
|
作者：
Jiang, Li [1 ]
Liang, Xiu [1 ]
You, Tingting [1 ]
Yin, Penggang [1 ]
Wang, Hua [1 ]
Guo, Lin [1 ]
Yang, Shihe [1 ,2 ]
机构：
[1] Beihang Univ, Sch Chem & Environm, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2015年 / 142卷
基金：
中国国家自然科学基金;
关键词：
SERS; TiO2; AuNPs; PMBA; Adenine; SURFACE-ENHANCED RAMAN; SINGLE-MOLECULE; TIO2; NANORODS; SCATTERING; SPECTROSCOPY; ARRAYS; NANOPARTICLES; ADENINE; SITE;
D O I：
10.1016/j.saa.2015.01.040
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Sensitive SERS substrates based on Au/TiO2/Au nanosheet have been prepared by physically sputtering Au nanoparticles onto fabricated TiO2 nanosheets. The Au/TiO2/Au nanosheets show much stronger SERS signal as compared to normal Au/Ti substrates by increasing surface area and effectively inducing plasmonic coupling between adjoining Au nanoparticles. In addition, influence factors such as concentration of probe solution and deposition time of gold nanoparticles were discussed. This study provides an easy-prepared and label-free substrate for the detection of biomolecule. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：50 / 54
页数：5
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