Production of efficient sers substrates by depositing gold over a polystyrene beads template

Quimica nova

Santos, Diego Pereira dos¹  Sant'Ana, Antônio Carlos¹  Temperini, Marcia L. A.¹  Andrade, Gustavo Fernandes Souza¹ 

[1] Universidade de São Paulo, São Paulo, Brasil

关键词: SERS;    nanostructured Au substrate;    single-molecule detection.;   

DOI  :  10.1590/S0100-40422010001000017

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work reportson the SERS activity of a nanostructured substrate that was obtained by electrodepositinggold over a template consisting of polystyrene microspheres. This substratedisplayed superior SERS performance for the detection of 4-merctaptopyridineas compared to a conventional roughened Au electrode. In order to investigatethe substrate capability for the detection at low concentration limits, a seriesof Rhodamine 6G (1 nM) spectra were registered. Our spectral dynamics data isin agreement with single-molecule behavior, showing that the control over thesubstrate morphology is crucial to enable the production of highly reproducibleand sensitive SERS substrates.

【 授权许可】

CC BY