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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Concentration Quenching and Depolarisation of Photoluminescence in Solutions

C Bojarski and J Dudkiewicz

Abstract

The emission anisotropy r/r0 and quantum yield η/η0 of the photoluminescence of glycerin-water solutions of Na-fluorescein has been measured at concentrations 10-6 - 3·10-1 M. The drop of η/η0 is connected with a repolarisation effect, which is interpreted by a completed theory of con-centrational depolarisation of photoluminescence (CDPL), accounting the self-quenching by non-luminescent dimers and the remigration of excitation energy. The dimerisation constant and the critical concentrations have been determined.

Received: 1972-8-9
Published Online: 2014-6-2
Published in Print: 1972-12-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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