Abstract

Studies were made on the quenching of fluorescence of benzene state S 1, excited with λ = 254 nm radiation, by acetone, 2-butanone and 3-pentanone in cyclohexane, n-heptane, acetonitrile and ethyl acetate. The calculated values of quenching rate constants k q suggest that this process is in most cases controlled by diffusion. To furnish an example, the results are presented of investigations on the sensitizing effect of benzene upon the photolysis of acetone in cyclohexane and attempts were made at an analysis of the kinetics of the process.

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