title: Synthesis and photophysical properties of a new cationic water-soluble Zn phthalocyanine.
abstract: The synthesis of tetrakis (1,1-dimethyl-2-trimethylammonium)ethylphthalocyaninato Zn(II) tetraiodide 2--a new cationic phthalocyanine--is reported as well as its photophysical properties in water, relevant for the use of this dye as photodynamic sensitizer. The hydrophobicity of the macrocycle leads to strong aggregation which lowers the fluorescence and singlet oxygen quantum yields of aqueous solutions of 2. Photophysical parameters agree with those of other Zn phthalocyanines when correction is performed for the fraction of light absorbed by the monomer.
authors.affiliation: INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
authors.forename: D A
authors.initials: DA
authors.lastname: Fernández
authors.forename: J
authors.initials: J
authors.lastname: Awruch
authors.forename: L E
authors.initials: LE
authors.lastname: Dicelio
mesh_terms: D002412:Cations; D019281:Dimerization; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007211:Indoles / Q000138:chemical synthesis / Q000737:chemistry*; D054833:Isoindoles; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010100:Oxygen / Q000378:metabolism; D011838:Radiation-Sensitizing Agents / Q000138:chemical synthesis / Q000737:chemistry*; D026082:Singlet Oxygen; D012995:Solubility; D014867:Water; D015032:Zinc
chemical_list: D002412:Cations; D005456:Fluorescent Dyes; D007211:Indoles; D054833:Isoindoles; D009942:Organometallic Compounds; D011838:Radiation-Sensitizing Agents; C110545:zinc(II)-tetrakis(1,1-dimethyl-2-trimethylammonium)ethylphthalocyanine; D014867:Water; D026082:Singlet Oxygen; D015032:Zinc; D010100:Oxygen; C013647:phthalocyanine