title: Radical intermediates induced by porphyrin triplets.
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.
authors: Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest.
authors: G
authors: G
authors: Móger
authors: M
authors: M
authors: Györ
authors: T
authors: T
authors: Vidóczy
authors: D
authors: D
authors: Gál
mesh_terms: D005609:Free Radicals; D009369:Neoplasms / Q000188:drug therapy; D010777:Photochemistry; D010778:Photochemotherapy; D011166:Porphyrins / Q000737:chemistry / Q000528:radiation effects*; D013113:Spin Labels
chemical_list: D005609:Free Radicals; D011166:Porphyrins; D013113:Spin Labels