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Resonance Raman spectroscopy of the acid–base indicator neutral red
Author(s) -
Bisset Alison,
Dines Trevor J.
Publication year - 1991
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.1250220210
Subject(s) - raman spectroscopy , excited state , chemistry , phenazine , resonance raman spectroscopy , resonance (particle physics) , excitation , ring (chemistry) , spectroscopy , absorption (acoustics) , base (topology) , photochemistry , absorption spectroscopy , analytical chemistry (journal) , nuclear magnetic resonance , atomic physics , optics , organic chemistry , physics , quantum mechanics , mathematical analysis , mathematics
Resonance Raman spectra of the acid–base indicator neutral red and its monoprotonated and diprotonated derivatives, excited in the region of the lowest energy electronic absorption bands, are reported. The bands are assigned to vibrations of the phenazine ring system and the substituents. Measurements of the band intensities have permitted an evaluation of the geometric changes attendant upon excitation to the resonant excited state.