PICOSECOND VIBRATIONAL-RELAXATION IN THE EXCITED-STATE PROTON-TRANSFER OF 2-(3'-HYDROXY-2'-NAPHTHYL)BENZIMIDAZOLE

Authors
DOUHAL A AMATGUERRI F ACUNA AU YOSHIHARA K
Citation
A. Douhal et al., PICOSECOND VIBRATIONAL-RELAXATION IN THE EXCITED-STATE PROTON-TRANSFER OF 2-(3'-HYDROXY-2'-NAPHTHYL)BENZIMIDAZOLE, Chemical physics letters, 217(5-6), 1994, pp. 619-625
Citations number
36
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
217
Issue
5-6
Year of publication
1994
Pages
619 - 625
Database
ISI
SICI code
0009-2614(1994)217:5-6<619:PVITEP>2.0.ZU;2-2
Abstract
The fluorescence of 2-(3'-hydroxy-2'-naphthyl) benzimidazole in soluti on shows two bands at approximate to 400 and 600 nm, respectively assi gned to the open-enol form bound to the solvent, and to the phototauto mer produced from the closed-enol form. Both enol species coexist in t he ground state. A fluorescence risetime of 16 ps has been attributed to the vibrational cooling-process of the excited phototautomer.