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Tetra-3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin-substituted zinc phthalocyanines: Synthesis, characterization and aggregation effects on photophysical/photochemical properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
27601 44031 2010 9 PDF Available
Title
Tetra-3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin-substituted zinc phthalocyanines: Synthesis, characterization and aggregation effects on photophysical/photochemical properties
Abstract

A synthesis of a novel zinc phthalocyanine with four 3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin dye groups at the non-peripheral positions was performed and characterized. The photophysical and photochemical properties of the peripherally (p) and non-peripherally (np) tetra-3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin substituted zinc (II) phthalocyanines are reported. The effects of the position of the substituents and the aggregation on the photophysical/photochemical properties of these complexes are also investigated. General trends are described for photodegredation, singlet oxygen and fluorescence quantum yields, and fluorescence lifetimes in dimethylsulphoxide (DMSO) for np-ZnPc and in both DMSO and DMSO + Triton-X 100 solutions for p-ZnPc. The fluorescence of the tetra-substituted zinc phthalocyanine complexes (np-ZnPc and p-ZnPc) are effectively quenched addition of 1,4-benzoquinone (BQ).

Keywords
Coumarin (2H-chromen-2-one); Fluorescence; Phthalocyanine; Quantum yield; Singlet oxygen; Zinc
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Tetra-3-[(2-diethylamino)ethyl]-7-oxo-4-methylcoumarin-substituted zinc phthalocyanines: Synthesis, characterization and aggregation effects on photophysical/photochemical properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 213, Issues 2–3, 25 June 2010, Pages 171–179
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
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