Non-peripherally tetrasubstituted phthalocyanines: Synthesis, characterization and, photophysical investigation

The synthesis, characterization and photophysical properties of novel, non-peripherally tetrasubstituted metal-free and metallophthalocyanines (MPcs) (Zn, In) bearing morpholinoethoxy groups have been reported. The new compounds were characterized by using elemental analysis,¹H NMR, UV–Vis and FT-IR spectroscopy and mass spectrometry. The aggregative properties of the novel compounds were investigated in different concentrations. General trends for fluorescence quantum yields and lifetimes of metal-free and metallophthalocyanines were also described in tetrahydrofuran (THF). The fluorescence of these compounds is effectively quenched by 1,4-benzoquinone (BQ) in THF.