Photoperoxidation of a Diamino Zinc Porphyrazine to the seco-Zinc Porphyrazine:  Suicide or Murder?

Photoperoxidation of a Diamino Zinc Porphyrazine to the seco-Zinc Porphyrazine:  Suicide or Murder?

We report on the efficient photooxidation of hexapropyl bis(dimethylamino) zinc porphyrazine. The process is shown to be autocatalytic. The triplet state of the seco-ZnPz sensitizes the formation of excited-state singlet oxygen with a quantum yield of 0.54 and subsequent cleavage of the pyrrole doub...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 1999-06, Vol.103 (22), p.4352-4358
Hauptverfasser: Montalban, A. Garrido, Meunier, H. G, Ostler, R. B, Barrett, A. G. M, Hoffman, B. M, Rumbles, G
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container_issue 22
container_start_page 4352
container_title The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory
container_volume 103
creator Montalban, A. Garrido
Meunier, H. G
Ostler, R. B
Barrett, A. G. M
Hoffman, B. M
Rumbles, G
description We report on the efficient photooxidation of hexapropyl bis(dimethylamino) zinc porphyrazine. The process is shown to be autocatalytic. The triplet state of the seco-ZnPz sensitizes the formation of excited-state singlet oxygen with a quantum yield of 0.54 and subsequent cleavage of the pyrrole double bond occurs to give the product, seco-zinc porphyrazine. The photophysics of the two porphyrazines is examined using absorption, emission, and transient absorption spectroscopy. The efficiency of production of singlet oxygen is monitored using the phosphorescence emission signature at 1270 nm.
doi_str_mv 10.1021/jp9905068
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title Photoperoxidation of a Diamino Zinc Porphyrazine to the seco-Zinc Porphyrazine:  Suicide or Murder?
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