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Triplet Yield of Merocyanine 540 in Water Is Wavelength Dependent
Seret, Alain; Hoebeke, Maryse; Van de Vorst, Albert
1990In Photochemistry and Photobiology, 52 (3), p. 601-604
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Keywords :
Merocyanine 540; MC540; Aqueous solutions; First singlet state; Quantum Yield; Visible light; UV light; Isomerization
Abstract :
[en] Monomers and aggregates of Merocyanine 540 (MC540) in water are able to photoisomerize. The shape of the photoisomer absorption spectrum is very similar to that of the ground state. Triplet state of MC540 in water has been produced by energy transfer from triplet anthracene and displays a broad absorption spectrum between 600 and 700 nm. The triplet state may also be produced by direct excitation of MC540 with UV light. However, when the dye is excited by visible light, no triplet state absorbance in the red could be detected so that the triplet yield of MC540 in water seems to be excitation wavelength dependent.
Disciplines :
Chemistry
Physics
Author, co-author :
Seret, Alain ;  Université de Liège - ULiège > Physique Expérimentale
Hoebeke, Maryse  ;  Université de Liège - ULiège > Physique Expérimentale
Van de Vorst, Albert;  Université de Liège - ULiège > Physique Expérimentale
Language :
English
Title :
Triplet Yield of Merocyanine 540 in Water Is Wavelength Dependent
Publication date :
September 1990
Journal title :
Photochemistry and Photobiology
ISSN :
0031-8655
Publisher :
Pergamon Press, United Kingdom
Volume :
52
Issue :
3
Pages :
601-604
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 December 2008

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