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Issue 2, 2015
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Exploring copper nanostructures as highly uniform and reproducible substrates for plasmon-enhanced fluorescence

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Abstract

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%.

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

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Publication details

The article was received on 16 May 2014, accepted on 07 Nov 2014 and first published on 07 Nov 2014


Article type: Paper
DOI: 10.1039/C4AN00889H
Citation: Analyst, 2015,140, 476-482
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    Exploring copper nanostructures as highly uniform and reproducible substrates for plasmon-enhanced fluorescence

    D. Volpati, E. R. Spada, C. C. P. Cid, M. L. Sartorelli, R. F. Aroca and C. J. L. Constantino, Analyst, 2015, 140, 476
    DOI: 10.1039/C4AN00889H

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