The influences of the number of the ammonium groups and their arrangement manner on the photophysical properties of the quaternized zinc phthalocyanines

• Zinc phthalocyanines with different quaternized ammonium groups were synthesized.
• Zinc phthalocyanines with different configuration were synthesized.
• The number of quaternized nitrogens influences the properties of phthalocyanines.
• Configuration of quaternized nitrogens influences the properties of phthalocyanines.

The influences of the number of the ammonium groups and their arrangement manner on the photophysical properties of the quaternized zinc phthalocyanines were studied. The aggregation tendency, singlet oxygen generation ability and the fluorescence intensity properties of the quaternized zinc phthalocyanines were studied and compared. Results indicated that more quaternized ammonium groups and the straight chain arrangement manner for the quaternized zinc phthalocyanines can decrease aggregation degree and increase singlet oxygen generation and fluorescence intensity.

Four quaternized zinc phthalocyanines with different ammonium groups and configuration for quaternized nitrogens were synthesized and studied. Result showed that the straight configuration and the increased numbers of quaternized ammonium groups can decrease the aggregation degree and improve the single oxygen generation ability and fluorescence intensity.Figure optionsDownload as PowerPoint slide