Laser induced photochromic mechanism of 3-phenyl-3-[ 1,2-dimethylindol-3-yl]-3H-naphtho[2,1-B]pyran

Authors
Pan, GL Wei, JQ Fan, P Zhu, AP Ming, YF Fan, MG Yao, SD
Citation
Gl. Pan et al., Laser induced photochromic mechanism of 3-phenyl-3-[ 1,2-dimethylindol-3-yl]-3H-naphtho[2,1-B]pyran, RES CHEM IN, 26(7-8), 2000, pp. 829-838
Citations number
16
Categorie Soggetti
Chemistry
Journal title
RESEARCH ON CHEMICAL INTERMEDIATES
ISSN journal
09226168 → ACNP
Volume
26
Issue
7-8
Year of publication
2000
Pages
829 - 838
Database
ISI
SICI code
0922-6168(2000)26:7-8<829:LIPMO3>2.0.ZU;2-X
Abstract
The photochromic process of 3-phenyl-3-[1,2-dimethylindol-3-yl]-3H-naphtho[ 2,1-b]pyran [I] has been examined with nanosecond laser flash photolysis te chniques in cyclohexane and acetonitrile respectively. Both excited singlet state and triplet state are involved in the photocoloration process. The d ecay kinetics of photoproducts are also studied. The maximum absorption wav elength and lifetime of the transient species are solvent dependent.