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Metal–Organic Semiconductor Nanostructures for Surface-Enhanced Raman Scattering

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Abstract:

Metal–organic semiconductor films are fabricated as co-evaporated films. It is demonstrated that the technique can be used to fabricate metal-semiconductor surface-enhanced Raman scattering (SERS) or surface-enhanced resonance Raman scattering (SERRS) substrates or to attain SERS or SERRS of highly insoluble pigments. The experiments are carried out using three different pigments: iron phthalocyanine (FePc) and two substituted tetracaboxylic perylenes (PTCDs). The structure of the co-PVD films was characterized at the nanoscale by scanning electron microscopy through field-emission gun (SEM-FEG), revealing a fairly homogeneous spatial distribution of the silver-pigment nanoparticles. The fabricated mixed nanostructures show a homogenous distribution of plasmon enhancement as observed in the point-by-point mapping of the SERRS spectra recorded with micrometer spatial resolution in Raman microscopy.

Keywords: EVAPORATED FILM; ORGANIC SEMICONDUCTOR; PERYLENE; PHTHALOCYANINE; SERRS; SERS; SURFACE-ENHANCED RAMAN SCATTERING; SURFACE-ENHANCED RESONANCE RAMAN SCATTERING

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/10-06101

Affiliations: 1: Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil 2: Faculty of Science, University of Valladolid, Valladolid, 47011, Spain 3: Faculdade de Ciências e Tecnologia, Unesp Univ Estadual Paulista, Presidente Prudente/SP, 19060-900, Brazil; Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada

Publication date: February 1, 2011

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