The influence of the various central metals on photophysical and photochemical properties of benzothiazole-substituted phthalocyanines

• The fluorescence quantum yields and lifetimes of phthalocyanines.
• The fluorescence quenching studies of phthalocyanines.
• The singlet oxygen quantum yields and photodegradation studies of phthalocyanines.
• The influence of the metal ions on the photophysical and photochemical parameters.

The photophysical (fluorescence quantum yields and lifetimes, fluorescence quenching studies by 1,4-benzoquinone (BQ)) and photochemical (singlet oxygen quantum yields and photodegradation studies under light irradiation) properties of tetra-benzothiazole substituted metal-free (H2Pc, 1), lead (II) (PbPc, 2) and zinc(II) (ZnPc, 3) phthalocyanine compounds were investigated in tetrahydrofuran (THF) solution. All of these compounds did not show any aggregation and they produced good singlet oxygen (especially ZnPc). The influence of the various central metal ions (zinc, lead or without metal) on the photophysical and photochemical parameters was also investigated and compared.

The fluorescence quantum yields and lifetimes, fluorescence quenching studies and singlet oxygen quantum yields and photodegradation studies of tetra-benzothiazole substituted metal-free (H2Pc, 1), lead(II) (PbPc, 2) and zinc(II) (ZnPc, 3) phthalocyanine compounds were investigated in tetrahydrofuran (THF) solution. The influence of the various central metal ions (zinc, lead or without metal) on the photophysical and photochemical parameters was also investigated and compared.Figure optionsDownload as PowerPoint slide