Pulsed Irradiation of Water-soluble Porphyrins

DOI: 10.1039/f19827800127

Source and publish data:

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 127 - 136 (1982)

Update date:2022-08-06

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Authors:

Bonnet, Raymond

Ridge, R. J.

Land, Edward J.

Sinclair, Roy S.

Tait, David

Truscott, T. George

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Article abstract of DOI:10.1039/f19827800127

Nanosecond laser flash photolysis and pulse radiolysis have been used to characterise the excited states and radicals of meso-tetraphenylporphyrin tetrasulphonic acid as the tetrasodium salt (Na4TPPS) and of meso-tetra-N-methylpyridylporphyrin as the tetra-p-toluenesulphonate (TMPyrP).After 347 nm irradiation, aqueous Na4TPPS forms triplet states (Φ_T=0.76) and photoionises monophotonically (Φ_I=0.029), while TMPyrP forms only triplets (Φ_T=0.92) and does not photoionise.The difference and corrected spectra of the triplet states and the semi-oxidised and semi-reduced radicals of these molecules have been obtained.

Full text of DOI:10.1039/f19827800127

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