Otro
Large-Area Plasmonic Substrate of Silver-Coated Iron Oxide Nanorod Arrays for Plasmon-Enhanced Spectroscopy
Registro en:
Chemphyschem. Weinheim: Wiley-v C H Verlag Gmbh, v. 14, n. 9, p. 1871-1876, 2013.
1439-4235
10.1002/cphc.201300054
WOS:000320383300016
Autor
Carvalho, Waldemir Moura
Volpati, Diogo
Nunes Carvalho, Vitor A.
Aroca, Ricardo F.
Constantino, Carlos J. L.
Souza, Flavio L.
Resumen
One-dimensional iron oxide materials fabricated on conducting glass substrates and their unique properties make these nanostructures promising candidates for a wide range of applications. Herein, vertically oriented -Fe2O3 nanorod arrays synthesized under hydrothermal conditions over a large area are described, as an active platform for surface-enhanced resonance Raman scattering (SERRS) and surface-enhanced fluorescence (SEF). From scanning electron microscopy images the formation of a homogeneous distribution of vertically oriented rods in a large area is confirmed. For activating the localized surface plasmon resonances, which are responsible for SERRS and SEF, a 6 nm layer of Ag is deposited onto the -Fe2O3 nanorod arrays by physical vapor deposition to form Ag islands. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)