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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Detalles Bibliográficos
Autores principales: Tognalli, N., Fainstein, A., Bonazzola, C., Calvo, E.
Formato: JOUR
Materias:
Charge transfer
Deposition
Electrochemistry
Electrodes
Light absorption
Light transmission
Molecular vibrations
Multilayers
Oxidation
Quenching
Raman spectroscopy
Self assembly
Solutions
Oxidation state
Raman mode
Raman resonance
Raman scattering
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00219606_v120_n4_p1905_Tognalli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
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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