Fluorescence quenching dynamics of azulene and 2-haloazulenes by CCl4 in nonpolar solvents

Authors
Kim, SY Lee, GY Han, SY Lee, MY
Citation
Sy. Kim et al., Fluorescence quenching dynamics of azulene and 2-haloazulenes by CCl4 in nonpolar solvents, CHEM P LETT, 318(1-3), 2000, pp. 63-68
Citations number
26
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
318
Issue
1-3
Year of publication
2000
Pages
63 - 68
Database
ISI
SICI code
0009-2614(20000218)318:1-3<63:FQDOAA>2.0.ZU;2-V
Abstract
On the basis of picosecond fluorescence lifetime measurements, we report th e fluorescence quenching dynamics of azulene and 2-haloazulenes (halogen = Cl, Br, and I) in cyclohexane by CCl4 in the S-2 electronic state. It has b een observed that azulene fluorescence is efficiently quenched by carbon te trachloride with a diffusion-limited rate constant of 8.1 X 10(9) M-1 s(-1) , while 2-haloazulenes do not show fluorescence quenching by CCl4. (C) 2000 Elsevier Science B.V. All rights reserved.