Effect of solvent on the radiative decay of singlet molecular oxygen (a1Δg)

Rodger D. Scurlock, Santiago Nonell, Silvia E. Braslavsky, Peter R. Ogilby

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143 Citas (Scopus)


Relative rate constants for O2(a1Δg) radiative deactivation (kr) have been determined in 19 solvents. The data are consistent with earlier results that were obtained by using a different technique [Scurlock, R. D.; Ogilby, P. R. J. Phys. Chem. 1987, 91, 4599]. Of particular interest are the data in CS2, which heretofore had yet to be corroborated. Current results indicate that kr for CS2 is indeed ∼2 times larger than kr for benzene. A compilation of these results, along with those of other investigators, is provided. Average values of kr derived from this compilation correlate well with both the solvent refractive index and solvent polarizability. The data correlate less well with the solvent ionization potential. Possible mechanisms consistent with these data are discussed.

Idioma originalInglés
Páginas (desde-hasta)3521-3526
Número de páginas6
PublicaciónJournal of Physical Chemistry
EstadoPublicada - 1995


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