PRODUCTION OF EFFICIENT SERS SUBSTRATES BY DEPOSITING GOLD OVER A POLYSTYRENE BEADS TEMPLATE

被引：2
|
作者：
dos Santos, Diego Pereira [1 ]
Souza Andrade, Gustavo Fernandes [1 ,2 ]
Sant'Ana, Antonio Carlos [1 ,2 ]
Temperini, Marcia L. A. [1 ]
机构：
[1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05513970 Sao Paulo, Brazil
[2] Univ Fed Juiz de Fora, Inst Ciencias Exatas, Juiz De Fora, Brazil
来源：
QUIMICA NOVA | 2010年 / 33卷 / 10期
关键词：
SERS; nanostructured Au substrate; single-molecule detection; ENHANCED RAMAN-SCATTERING; SPECTROSCOPY; NANOPARTICLES; SILVER; FILM;
D O I：
10.1590/S0100-40422010001000017
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
PRODUCTION OF EFFICIENT SERS SUBSTRATES BY DEPOSITING GOLD OVER A POLYSTYRENE BEADS TEMPLATE. This work reports on the SERS activity of a nanostructured substrate that was obtained by electrodepositing gold over a template consisting of polystyrene microspheres. This substrate displayed superior SERS performance for the detection of 4-merctaptopyridine as compared to a conventional roughened Au electrode. In order to investigate the substrate capability for the detection at low concentration limits, a series of Rhodamine 6G (1 nM) spectra were registered. Our spectral dynamics data is in agreement with single-molecule behavior, showing that the control over the substrate morphology is crucial to enable the production of highly reproducible and sensitive SERS substrates.
引用
收藏
页码：2093 / 2097
页数：5
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