Photophysicochemical and fluorescence quenching studies of benzyloxyphenoxy-substituted zinc phthalocyanines.
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.
Gebze Institute of Technology, Department of Chemistry, PO Box 141, Gebze 41400, Turkey.
Mahmut
M
Durmuş
Tebello
T
Nyokong
D001554:Benzene / Q000737:chemistry*; D016227:Benzoquinones / Q000737:chemistry; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D009942:Organometallic Compounds / Q000737:chemistry*; D010777:Photochemistry / Q000379:methods*; D026082:Singlet Oxygen / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D014050:Toluene / Q000737:chemistry; D017967:Zinc Compounds
D016227:Benzoquinones; D007211:Indoles; D054833:Isoindoles; D009942:Organometallic Compounds; D017967:Zinc Compounds; C052159:Zn(II)-phthalocyanine; D026082:Singlet Oxygen; D014050:Toluene; C004532:quinone; D001554:Benzene; D004121:Dimethyl Sulfoxide