Unsymmetrically Substituted Phthalocyanine Carboxylic Acids

Abstract

New unsymmetrically substituted phthalocyanine carboxylic acids were synthesized by mixed cyclotetramerization of substituted phthalonitriles. The UV-vis absorption and fluorescence spectra and quantum yields of fluorescence were studied in comparison to symmetrically substituted analogues. The distribution of phthalocyanine carboxylic acids on the surface of titanium dioxide was studied by UV-vis absorption spectroscopy.

Symmetrical and difunctional substituted cobalt phthalocyanines with benzoic acids fragments: Synthesis and catalytic activity

“…There is data about carboxyl-substituted metallophthalocyanines, in which the carboxyl-group is linked directly with isoindole fragment and via phenoxy-, phenylamino-or phenylsulfanyl groups in literature [16][17][18][19]. However, they are primarily concerned the tetrasubstituted and octasubstituted phthalocyanines containing symmetrical substituents.…”