HYDROGEN-BONDING EFFECT ON THE PHOTOPHYSICAL PROPERTIES OF 7-AMINOCOUMARIN DERIVATIVES

Authors
ARBELOA TL ARBELOA FL TAPIA MJ ARBELOA IL
Citation
Tl. Arbeloa et al., HYDROGEN-BONDING EFFECT ON THE PHOTOPHYSICAL PROPERTIES OF 7-AMINOCOUMARIN DERIVATIVES, Journal of physical chemistry, 97(18), 1993, pp. 4704-4707
Citations number
41
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
97
Issue
18
Year of publication
1993
Pages
4704 - 4707
Database
ISI
SICI code
0022-3654(1993)97:18<4704:HEOTPP>2.0.ZU;2-U
Abstract
The photophysical properties of 7-amimocoumarin derivatives with diffe rent alkylation degrees are studied in water and in different monoalco hols. Specific hydrogen bonds between the solute and protic solvents a re considered to explain spectral shifts and internal conversion proce ss. The mechanism for the internal conversion process via a twisted in tramolecular charge transfer state and the umbrella-like motion model is discussed.