Substitution Effects on the Photophysical Characteristics of the Salicylic Anion |
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Authors: | Hem C. Joshi Cees Gooijer Gert van der Zwan |
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Affiliation: | (1) Department of Analytical Chemistry and Applied Spectroscopy, Laser Centre, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands;(2) Institute for Plasma Research, Bhat, Gandhinagar-, 382428, India |
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Abstract: | Spectral and photophysical properties of substituted salicylic anions are investigated by steady-state and time-resolved fluorescence spectroscopy for a variety of electron donating substituents at the positions para to the hydroxyl and carboxylic groups. Next to the usual excited-state intramolecular proton transfer in aqueous solution, an excited-state intermolecular proton transfer is found to be responsible for the dual emission observed in the case of 5-aminosalicylic anions. |
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Keywords: | Salicylic anion substitution ESIPT Stokes shift |
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