STATIC AND DYNAMIC-MODEL FOR 1-NAPHTHOL FLUORESCENCE QUENCHING BY CARBON-TETRACHLORIDE IN DIOXANE ACETONITRILE MIXTURES

Authors
BEHERA PK MISHRA AK
Citation
Pk. Behera et Ak. Mishra, STATIC AND DYNAMIC-MODEL FOR 1-NAPHTHOL FLUORESCENCE QUENCHING BY CARBON-TETRACHLORIDE IN DIOXANE ACETONITRILE MIXTURES, Journal of photochemistry and photobiology. A, Chemistry, 71(2), 1993, pp. 115-118
Citations number
20
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
71
Issue
2
Year of publication
1993
Pages
115 - 118
Database
ISI
SICI code
1010-6030(1993)71:2<115:SADF1F>2.0.ZU;2-H
Abstract
The quenching of 1-naphthol fluorescence by carbon tetrachloride (CCl4 ) has been studied in different solvent mixtures of acetonitrile and d ioxane at room temperature. The quenching is found to be appreciable a nd a positive deviation from linearity was observed in the Stern-Volme r plot in all the solvent mixtures even at moderate CCl4 concentration s (0.1 M or less). This could be explained satisfactorily by a static- dynamic model. The static quenching constant K0 values indicate that t he ground-state complex is weak and independent of solvent polarity, w hereas the dynamic quenching constant K(SV) depends on the solvent pol arity.