Radical intermediates induced by porphyrin triplets |
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| Authors: | G Móger M Gy?r T Vidóczy D Gál |
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| Institution: | Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest. |
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| Abstract: | In the photochemical reactions of triplets of both protoporphyrin-IX-dimethyl-ester (PP) and haematoporphyrin dihydrochloride (HP) with alpha-phenyl-ethyl hydroperoxide (HROOH) in C6H6 at room temperature, both O-O and C-C bonds are broken yielding alkoxy and carbon-centred radicals. The ruptures of C-C and O-H bonds were observed in the photochemical reaction of PP with tert-butanol in the same solvent, yielding alkoxy and carbon-centred radicals at lambda greater than or equal to 366 nm, while HP did not react photochemically with tert-butanol at lambda greater than or equal to 334 nm. |
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