PICOSECOND DYNAMICS OF THE S-2 EXCITED-STATE OF AZULENE AND ITS VAN-DER-WAALS COMPLEXES WITH AR AND XE

Authors
ABOUZIED OK DEMMER DRM WALLACE SC STEER RP
Citation
Ok. Abouzied et al., PICOSECOND DYNAMICS OF THE S-2 EXCITED-STATE OF AZULENE AND ITS VAN-DER-WAALS COMPLEXES WITH AR AND XE, Chemical physics letters, 266(1-2), 1997, pp. 75-85
Citations number
35
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
266
Issue
1-2
Year of publication
1997
Pages
75 - 85
Database
ISI
SICI code
0009-2614(1997)266:1-2<75:PDOTSE>2.0.ZU;2-I
Abstract
The dynamics of the second excited singlet (S-2) states of jet-cooled azulene (Az) and its van der Waals complexes with one and two atoms of Ar and Xe have been investigated. Quantum interference effects due to restricted intramolecular vibrational redistribution in azulene have been reinterpreted. Lifetime shortening in the 1:1 and 1:2 complexes w ith Xe is attributed to an enhancement of the rate of S-2-T-1 intersys tem crossing by the external heavy atom effect. Excitation of the comp lexes to states with E(vib) > E(b) produces energy-resolved fluorescen ce decays which exhibit sequential intramolecular vibrational redistri bution-vibrational predissociation.