Photophysical and Aggregation Studies of t‐Butyl‐Substituted Zn Phthalocyanines

Photochemistry and Photobiology - Tập 63 Số 6 - Trang 784-792 - 1996
Daniel Fernández1, Josefina Awruch2, Lelia E. Dicelio1
1INQUIMAE, Departamento de Química Inorgánica, Facultat de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, (1428) Buenos Aires, Argentina
20epartamento de Química Organica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Junin 956, (1113) Buenos Aires, Argentina

Tóm tắt

ABSTRACT

Three potential photosensitizers for photodynamic therapy: tetra‐t‐butyl phthalocyaninato Zn(II), tetrakis‐(1,1‐dimethyl‐2‐phthalimido)ethylphthalocyaninato Zn(II), and tetrakis‐(1,1‐dimethyl‐2‐amino)ethylphthalocyaninato Zn(II), have been studied in homogeneous organic media. Dimerization constants and monomer and dimer spectra have been determined. Fluorescence, triplet and singlet oxygen quantum yìelds were measured and the photo‐physical characterization of the triplet state was performed for the three dyes. These parameters were evaluated in connection with aggregation results.

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