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ISSN 1998-9539

Influence of Central versus Peripheral Coordination of Pt and Pd Atoms on Physical-Chemical Properties of Octa-4,5-carboxyphthalocyanines

Nina A. Kuznetsova,@ Roman A. Bulgakov, Ludmila I. Solovyova, Ekaterina N. Shevchenko, Oleg L. Kaliya, and Evgeny A. Lukyanets

Organic Intermediates and Dyes Institute, 123995 Moscow, Russia
@Corresponding author E-mail:


DOI: 10.6060/mhc150353k

Macroheterocycles 2015 8(2) 143-149


New PtII and PdII complexes of 2,3,9,10,16,17,23,24-octacarboxyphthalocyanine as well as covalent tetraconjugates of diaqua palladium(II) and octacarboxy substituted zinc phthalocyanine were synthesized and characterized by elemental analysis, UV-Vis and IR spectroscopy. Their properties (solubility, absorption and luminescence, singlet oxygen quantum yields and photostability) are herein reported. It was found that introduction of Pd or Pt atom to the phthalocyanine core has a profound effect, while modification of the periphery with four fragments of diaqua platinum or diaqua palladium has only a limited effect on photochemical and photophysical properties of metallophthalocyanines. These data demonstrate the higher sensitivity of the phthalocyanine electronic structure, their singlet and triplet excited states and the probability of transitions between them to modification of the core than of the periphery..



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