Abstract
Consideration is given to phosphorescence and photochemical properties of the coordination compounds Pt(II), Pd(II), and Rh(III) with three water-soluble porphyrins, i.e., meso-tetrakis (4-N,N,N-trimethylaminophenyl) porphin (H2TTMAP4+), meso-tetrakis (4-N-methylpyridyl) porphin (H2TMPyP4+) and meso-tetrakis (4-sulfonatophenyl) porphin (H2TSPP4−). It is shown that the process of photoreduction by an irreversibly oxidized electron donor (EDTA) proceeds only for the complexes with TMPyP, which is attributed to the strongest oxidative properties of these metal poprhyrins in the triplet excited state. The end products of the photoreduction reaction (metal chlorins and metallophlorin-anions) are established and its possible mechanism is suggested.
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Reported at the VIIIth International Conference on Spectroscopy of Porphyrins and Their Analogs, Minsk, September 22–26, 1998.
A. I. Gertsen Russian State Pedagogical University, 48, Moika Embankment, St. Petersburg, 191186, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 4, pp. 528–531, July–August, 1999.
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Vasil'ev, V.V., Blinova, I.A., Golovina, I.V. et al. Photophysical and photochemical properties of the water-soluble porphyrin complexes of metals of the platinum group. J Appl Spectrosc 66, 583–587 (1999). https://doi.org/10.1007/BF02675390
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DOI: https://doi.org/10.1007/BF02675390