The luminescence quenching of uranyl ion with cyclohexane, benzene, toluene, anisole and nitrobenzene during its photochemical reduction with triphenylphosphine was studied. The results show that the substituents have a remarkable effect on the aromatic ring which operates in accordance with the inductive effect. Because of the positive inductive effect of the methyl and methoxy groups on the phenyl ring, there is an increased electron density for exciplex formation, and this results in a high value for physical quenching of optically excited uranyl ion with anisole; the value is low with nitrobenzene owing to the negative inductive effect of the nitro group.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Photochemistry and Photobiology, A: Chemistry|
|State||Published - Feb 1989|
ASJC Scopus subject areas
- Chemical Engineering(all)
- Physics and Astronomy(all)