ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Deactivation Behaviour of Arenes and Heteroarenes. XVII. Fluorescence Quenching of Cations by AnionsFluorescence quenching, caused by cation-anion interaction in the excited state, was investigated for the combinations of 13 acridinium and acridizinium ions (fluorophors) and chloride, bromide and iodide (quenchers). The obtained dependence of rate constants of dynamic quenching process on the acceptor properties of cations in the case of chloride is interpreted by the model of electron transfer in the encounter state. The resulting limit-rate constants of quenching are greater than those of diffusion of neutral molecules, caused by the Coulomb-interaction between cation and anion.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19793210311
