Resonant Raman spectroscopy of PAH-Os self-assembled multilayers
A resonant Raman scattering and optical absorption study of self-assembled (PAH-Os/PVS)n and (PAH-Os/GOx)m multilayers was presented. It was found that a single monomolecular layer of PAH-Os deposited on a smooth gold surface shows resonant Raman scattering. The strong Raman resonance was observed a...
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2004
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v120_n4_p1905_Tognalli http://hdl.handle.net/20.500.12110/paper_00219606_v120_n4_p1905_Tognalli |
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Sumario: | A resonant Raman scattering and optical absorption study of self-assembled (PAH-Os/PVS)n and (PAH-Os/GOx)m multilayers was presented. It was found that a single monomolecular layer of PAH-Os deposited on a smooth gold surface shows resonant Raman scattering. The strong Raman resonance was observed around 515 nm and was assigned to a metal-to-ligand charge transfer (MLCT) transition involving the metal complex. The results show a blueshift of the bipyridine modes and quenching of the Raman resonance upon oxidation of the self-assembled layers in an electrochemical cell. |
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