Fluorescence Quenching and Solvent Excitation Migration in Liquid Alkylnaphthalenes

Autor:	E. J. Smutny, J. W. Eastman, G. M. Coppinger
Rok vydání:	1970
Předmět:	Solvent Reaction rate constant Quenching (fluorescence) Chemistry Analytical chemistry General Physics and Astronomy Limiting Physical and Theoretical Chemistry Intrinsic fluorescence Photochemistry Fluorescence Excitation
Zdroj:	The Journal of Chemical Physics. 53:4346-4352
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1673944
Popis:	The fluorescence of neat alkylnaphthalene liquids is quenched to varying degrees by the addition of 16 organic compounds. Rate constants for the quenching (kq) have been calculated using the intrinsic fluorescence lifetime reported previously by Birks and King. For the series of quenchers, the rate constant appears to increase as increasing amounts of charge are transferred to or from the alkylnaphthalene. A limiting maximum of kq = 45 × 109 (M·sec)−1 is obtained. This may be interpreted to mean that the migration of energy through liquid alkylnaphthalenes occurs in jumps of 4.5 A every 4 × 10−12 sec.
Databáze:	OpenAIRE
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