title: Water-soluble cationic gallium(III) and indium(III) phthalocyanines for photodynamic therapy.
abstract: The new tetra-non-peripheral and peripheral 2-mercaptopyridine substituted gallium(III) and indium(III) phthalocyanine complexes (np-GaPc, p-GaPc, np-InPc and p-InPc) and their quaternized derivatives (Qnp-GaPc, Qp-GaPc, Qnp-InPc and Qp-InPc) have been synthesized and characterized. The quaternized complexes show excellent solubility in water, which makes them potential photosensitizer for use in photodynamic therapy (PDT) of cancer. Photophysical and photochemical properties of these phthalocyanines were investigated. General trends are described for quantum yields of photodegradation, fluorescence and fluorescence lifetimes as well as singlet oxygen quantum yields of these compounds. In this study, the effects of the position of the substituents, the nature of the metal ion and quaternization of the substituents on the photophysical and photochemical parameters of the gallium(III) and indium(III) phthalocyanines are also reported. This study also presented the ionic gallium(III) and indium(III) phthalocyanines strongly bind to bovine serum albumin (BSA).
authors.affiliation: Gebze Institute of Technology, Department of Chemistry, PO Box 141, Gebze 41400, Kocaeli, Turkey.
authors.forename: Mahmut
authors.initials: M
authors.lastname: Durmuş
authors.forename: Vefa
authors.initials: V
authors.lastname: Ahsen
mesh_terms: D000818:Animals; D002412:Cations / Q000737:chemistry*; D002417:Cattle; D005708:Gallium / Q000737:chemistry*; D006801:Humans; D007204:Indium / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry / Q000627:therapeutic use; D054833:Isoindoles; D015394:Molecular Structure; D010777:Photochemistry / Q000379:methods; D010778:Photochemotherapy / Q000379:methods*; D017319:Photosensitizing Agents / Q000737:chemistry / Q000627:therapeutic use; D010860:Pigments, Biological / Q000737:chemistry; D012709:Serum Albumin / Q000737:chemistry; D026082:Singlet Oxygen / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*
chemical_list: D002412:Cations; D007211:Indoles; D054833:Isoindoles; D017319:Photosensitizing Agents; D010860:Pigments, Biological; D012709:Serum Albumin; D007204:Indium; D014867:Water; D026082:Singlet Oxygen; D005708:Gallium; C013647:phthalocyanine