Photosensitization with alpha-terthienyl: the formation of superoxide ion in aqueous media.
It is well known that alpha-terthienyl generates singlet oxygen in organic solvents with high quantum yields. In an aqueous medium, the production of superoxide radical-anion is readily detected by comparing the reduction of ferricytochrome c or nitro blue tetrazolium in the presence and in the absence of superoxide dismutase. Electron transfer reactions from the electronically excited sensitizer are also detected in an argon atmosphere.
Kagan
J
J
Department of Chemistry, University of Illinois, Chicago 60680.
Bazin
M
M
Santus
R
R
D003574:Cytochrome c Group; D010084:Oxidation-Reduction; D013050:Spectrometry, Fluorescence; D013481:Superoxides; D013876:Thiophenes; D014466:Ultraviolet Rays
D003574:Cytochrome c Group; D013876:Thiophenes; C019101:alpha-terthienyl; D013481:Superoxides