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Surface‐enhanced Raman spectroscopy of ruthenium‐pyridyl complexes at copper electrodes
Author(s) -
Chambers Jeffrey A.,
Buck Richard P.
Publication year - 1984
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250150306
Subject(s) - ruthenium , raman spectroscopy , copper , chemistry , electrode , electrode potential , spectral line , bipyridine , pyridine , analytical chemistry (journal) , surface enhanced raman spectroscopy , excitation , photochemistry , raman scattering , electrochemistry , crystallography , catalysis , optics , organic chemistry , crystal structure , physics , electrical engineering , astronomy , engineering
Abstract Surface‐enhanced Raman spectra of 2,2′‐bipyridine, Ru(bpy)(py) 4 (CIO 4 ) 2 , Ru(py) 6 (BF 4 ) 2 and Ru(bpy)‐(PVP)(CIO 4 ) 2 at the surface of a copper electrode are presented [bpy = 2,2′‐bipyridine; py=pyridine; and PVP =poly(4‐vinylpyridine)]. The dependence of the spectra on potential is demonstrated through presentation of complete spectra at applied potentials from −0.2 to −1 V, as well as in plots of SER intensity vs electrode potential. The effect of excitation wavelength on the spectra is discussed. Significant differences between the potential dependences of these compounds at copper and silver electrode surfaces are shown. SER spectra from the surface‐enhanced resonance Raman active ruthenium complexes could be obtained only with an excitation wavelength longer than 514.5 nm.