Photophysical Characterization of Novel Neutral and Cationic
Phthalocyanine-like Photodynamic Agents Abstract
We report on the photophysical properties of novel neutral and cationic
tetrapyridinoporphyrazines. These compounds are interesting as potential photosensitizers
for inactivation of bacteria. Neutral pyridinoporphyrazines show photophysical properties
comparable to those of typical metallophthalocyanines. The cationic derivatives are
partially aggregated in organic solvents, but can
be monomerized using aqueous detergents (SDS 0.1 M) or binding the central metal cation
axially to pyridine. The triplet and singlet oxygen quantum yields range from 0.3 to 0.7.
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Last update: October 15, 1997
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