Solvent effects of photoinduced electron transfer reactions of triplet fluorenone with amines |
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Authors: | JinTing Wang Qian Sun LiMin Zhang and ShuQin Yu |
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Institution: | Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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Abstract: | The property of the lowest excited triplet state of fluorenone (FL) in acetonitrile, ethyl acetate, toluene, cyclohexane has been investigated using time-resolved laser flash photolysis. The appearances of the corresponding cation radicals and anion radicals suggest that the electron transfer reaction occurs between 3FL* and amines. Experimental results show a decrease in the quenching rate constants along with reducing solvent polarity. The change of quenching rate constants of the FL excited triplet with the three N,N-dimethylaniline derivatives are explained using the Hammett constant. |
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Keywords: | laser flash photolysis fluorenone electron transfer hydrogen-bonding solvent effects |
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