Effect of 1,4-diazabicyclo-[2,2,2]-octane on the laser properties of 7-amino coumarin dyes

Priyadarsini, K. I. ; Mittal, J. P. (1991) Effect of 1,4-diazabicyclo-[2,2,2]-octane on the laser properties of 7-amino coumarin dyes Journal of Photochemistry and Photobiology A: Chemistry, 61 (3). pp. 381-388. ISSN 1010-6030

Full text not available from this repository.

Official URL: http://linkinghub.elsevier.com/retrieve/pii/101060...

Related URL: http://dx.doi.org/10.1016/1010-6030(91)90021-K

Abstract

1,4-Diazabicyclo-[2,2,2]-octane (Dabco), a tertiary amine, was found to quench the fluorescence of two 7-amino coumarin dyes C1 and C102. The quenching was monitored in solvents of varying polarity. In non-polar and polar aprotic solvents the quenching is very efficient and the rate constants for quenching are within diffusion-controlled limits, whereas in protic solvents the quenching efficiency is very low. An attempt has also been made to delineate the mechanism for the stabilization of a dye laser by Dabco, following the reactions of the triplets of C1 with Dabco and also by monitoring the photodegradation of C1 in the presence of Dabco.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:25706
Deposited On:04 Dec 2010 11:52
Last Modified:08 Jun 2011 05:19

Repository Staff Only: item control page