Exploring copper nanostructures as highly uniform and reproducible substrates for plasmon-enhanced fluorescence

Autor(es)

Volpati, D. ^{[1, 2]} ; Spada, E. R. ^[1] ; Pla Cid, C. C. ^[3] ; Sartorelli, M. L. ^[4] ; Aroca, R. F. ^[5] ; Constantino, C. J. L. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560 Sao Carlos, SP - Brazil

^[2] UNESP Univ Estadual Paulista, Fac Ciencias & Tecnol, BR-19060900 Presidente Prudente, SP - Brazil

^[3] Univ Fed Santa Catarina, Lab Cent Microscopia Eletron, BR-88040900 Florianopolis, SC - Brazil

^[4] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC - Brazil

^[5] Univ Windsor, Mat & Surface Sci Grp, Windsor, ON N9B 3P4 - Canada

• Tipo de documento: Artigo Científico
• Fonte: ANALYST; v. 140, n. 2, p. 476-482, 2015.
• Citações Web of Science: 8

Resumo

The unique properties of metallic nanostructures of coinage metals that can sustain localized surface plasmon resonances (LSPR) put them at the centre of plasmon-enhanced phenomena. The theory of plasmonic phenomena based on LSPR is well-established. However, the fabrication of plasmonic substrates, reproducibly, is still challenging for applications in surface-enhanced Raman scattering (SERS) and surface-enhanced fluorescence (SEF). In this work we describe well-ordered copper nanostructures (CuNSs), produced by electrodeposition and nanosphere lithography, as active substrates for SEF. After a detailed spectroscopic and microscopic characterization, CuNSs are successfully applied as SEF-active substrates using a well-known perylene derivative as a target molecule. The signal reproducibility from CuNS substrates was established by comparing the results against those obtained from a simply roughened Cu substrate. Under optimal conditions, signal variability is around 4%. (AU)

• Processo FAPESP: 12/09905-3 - Avaliação espectroscópica da orientação molecular no volume e nas interfaces de filmes finos orgânicos depositados sobre diferentes superfícies
• Beneficiário: Diogo Volpati
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 11/11065-0 - Células fotovoltaicas híbridas: arquiteturas baseadas em efeitos fotônicos e plasmônicos
• Beneficiário: Edna Regina Spada
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado