Abstract
The adsorption and faradaic processes of formylferrocene thiosemicarbazone (TFF) on gold electrode in 0.1 mol L−1 NaClO4 acetonitrile solution were monitored by surface-enhanced Raman scattering (SERS) and ultraviolet-visible (UV-VIS) techniques. SERS data indicate that TFF adsorbs through the iminic N(2′) and S atoms on the gold electrode. The reduction product formed on the gold surface was aminomethylferrocene, whose experimental spectrum was supported by density functional theory calculations. In solution, thiourea was detected by the UV-VIS technique. Although there was an oxidation wave in the TFF cyclic voltammogram, no spectral changes were observed after the oxidation process.
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Acknowledgments
The authors thank Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support. GFSA thanks FAPESP for a fellowship (03/00411-9). MLAT thanks CNPq for a research fellowship.
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This work is dedicated to the memory of Prof. Francisco C. Nart.
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Andrade, G.F.S., Temperini, M.L.A. The adsorption and faradaic processes of formylferrocene thiosemicarbazone monitored by in situ SERS and UV-VIS spectroscopies. J Solid State Electrochem 11, 1497–1503 (2007). https://doi.org/10.1007/s10008-007-0318-0
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DOI: https://doi.org/10.1007/s10008-007-0318-0