Synthesis, characterization, investigation of photophysical and photochemical properties of the novel metallophthalocyanines and metal free that have benzotriazole group

In this study, the synthesis and characterization of 3-(2H-benzo[d][1,2,3]triazol-2-yl)-4-hydroxyphenethyl methacrylate (3) substituted novel phthalonitrile compound and its peripherally substituted zinc(II) (4), lead(II) (5) and metal-free phthalocyanine (6) derivatives were performed for the first time. This novel compounds were characterized by obtained data from general spectroscopic methods such as UV-vis, FT-IR, 1H-NMR, elemental analysis and mass spectroscopy. The photophysical and photochemical properties of these phthalocyanines were investigated in N,N-dimethylformamide (DMF) solutions for determination of their photosensitizing abilities in photocatalytic applications such as photodynamic therapy. The lead(II) phthalocyanine complex did not produce any fluorescent in DMF because of the heavy atom effect of bigger lead(II) ion. The fluorescence quantum yields of studied zinc(II) and metal-free phthalocyanines were found to quite higher than unsubstituted zinc(II) phthalocyanine due to substitution of the phthalocyanine skeleton. The influence of substituent and variety of the central metal ions on spectroscopic, photophysical and photochemical properties were also determined and compared.