PHOTOPHYSICS OF AMBIDENT ORGANIC-ANIONS .1.

Authors
BERCIFILHO P QUINA FH GEHLEN MH POLITI MJ NEUMANN MG BARROS TC
Citation
P. Bercifilho et al., PHOTOPHYSICS OF AMBIDENT ORGANIC-ANIONS .1., Journal of photochemistry and photobiology. A, Chemistry, 92(3), 1995, pp. 155-161
Citations number
72
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
92
Issue
3
Year of publication
1995
Pages
155 - 161
Database
ISI
SICI code
1010-6030(1995)92:3<155:POAO.>2.0.ZU;2-R
Abstract
The absorption and emission properties of saccharin, phthalimide, isat in and their anions were determined and analyzed. The conjugate bases of phthalimide and saccharin show parallel behaviour. The fluorescence occurrence is associated to an excited state with an electron-rich ar omatic ring (including the example of anomalous emission). The lifetim e in protic solvents is a function of the kind of the solute-solvent h ydrogen bond mechanism. Alternative hydrolysis two steps mechanism is suggested for phthalimide and isatin in view of the observed photophys ical behaviour.