title: Aerial oxidation of a redox-active porphyrin in the presence of a spin trap.
abstract: Aerial oxidation of meso-tetrakis(3,5-dimethoxy-4-hydroxyphenyl)- porphyrin 3, in the presence of the water-soluble spin trap (4-pyridyl-1-oxide)-N-t-butylnitrone (POBN), gives the porphyrin radical 4, in which spin density is localized on a phenoxyl meso-substituent. Evidence is presented to show that the spin trap inhibits solution aggregation and spin exchange of 4, but does not, as originally expected, form spin adducts with reduced-oxygen species.
authors.affiliation: a Departments of Chemistry and Biochemistry , Brunel University , Uxbridge , UK.
authors.forename: L R
authors.initials: LR
authors.lastname: Milgrom
authors.affiliation: a Departments of Chemistry and Biochemistry , Brunel University , Uxbridge , UK.
authors.forename: G
authors.initials: G
authors.lastname: Yahioglu
authors.affiliation: a Departments of Chemistry and Biochemistry , Brunel University , Uxbridge , UK.
authors.forename: W D
authors.initials: WD
authors.lastname: Flitter