| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1237183 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2010 | 5 Pages |
Abstract
The excited-state proton transfer of 3-hydroxybenzoic acid and 4-hydroxybenzoic acid was studied by time-resolved laser-induced fluorescence spectroscopy with ultra-short laser pulses. The excited-state reactions were identified in aqueous media as a function of the pH value. Apart from the well-known inversion of the ordinary dissociation properties of these compounds, new species were found which exist only in the excited-state resulting from a temporal and reversible annihilation of the aromatic bond system. These species and their reaction mechanisms were detected by their absorption and fluorescence spectra.
Keywords
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Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
D. Vulpius, G. Geipel, G. Bernhard,