Produção de substratos sers eficientes através da deposição de ouro sobre um molde de microesferas de poliestireno

Química Nova

Diego Pereira Dos Santos¹  Gustavo Fernandes Souza Andrade¹  Antônio Carlos Sant'ana¹  Marcia L. A. Temperini¹ 

[1] ,Universidade de São Paulo Instituto de Química Departamento de Química FundamentalSão Paulo SP ,Brasil

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

DOI  :  10.1590/S0100-40422010001000017

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY-NC   
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