Photophysicochemical and fluorescence quenching studies of benzyloxyphenoxy-substituted zinc phthalocyanines

Durmuş, M. and Nyokong, T. (2008) Photophysicochemical and fluorescence quenching studies of benzyloxyphenoxy-substituted zinc phthalocyanines. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 69 (4). pp. 1170-1177. ISSN 1386-1425



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Photochemical and photophysical measurements were conducted on peripheral and non-peripheral tetrakis- and octakis(4-benzyloxyphenoxy)-substituted zinc phthalocyanines (1, 2 and 3). General trends are described for photodegradation, and fluorescence quantum yields, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds in dimethylsulphoxide (DMSO) and toluene. The fluorescence of the complexes is quenched by benzoquinone (BQ), and fluorescence quenching properties are investigated in DMSO and toluene. The effects of the solvents on the photophysical and photochemical parameters of the zinc(II) phthalocyanines (1, 2 and 3) are also reported. Photophysical and photochemical properties of phthalocyanine complexes are very useful for PDT applications.

Item Type:Article
Uncontrolled Keywords:Zinc phthalocyanine; Triplet quantum yields; Fluorescence quenching; Fluorescence quantum yields
Subjects:Y Unknown > Subjects to be assigned
Divisions:Faculty > Faculty of Science > Chemistry
ID Code:991
Deposited By: Mrs Eileen Shepherd
Deposited On:19 May 2008
Last Modified:06 Jan 2012 16:19
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