Photochemistry in the adsorbed layer. VIII. Lifetimes of excited alkyl ketones and alkyl radicals adsorbed on porous Vycor glass.
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概要
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The photolyses as well as the absorption spectra of adsorbed 3-methyl-2-butanone and 3-methyl-2-pentanone have been investigated in the presence and absence of nitrogen monoxide. The Stern-Volmer relationship was applied to the decrease in the rate of photolysis caused by addition of nitrogen monoxide. From the results together with those for acetone, 2-butanone, and 2-pentanone, it has been concluded that in the adsorbed layer the more blue shifted, <I>i.e.</I>, the more strongly hydrogen bonded to the surface OH groups a ketone molecule, the shorter the lifetime of its excited state. It has been found that the lifetime of the alkyl radical on the surface increases with the decrease in its ionization potential, leading to the decrease in the strength of its interaction with the surface. Special features of the photolysis in the adsorbed layer have been described for 3-methyl-2-butanone photolysis.
- 公益社団法人 日本化学会の論文
著者
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Anpo Masakazu
Department Of Applied Chemistry Colledge Of Engineering University Of Osaka Prefecture
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Kubokawa Yutaka
Department of Applied Chemistry College of Engineering University of Osaka Prefecture
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ANPO Masakazu
Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture
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Wada Toshiaki
Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture
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Kubokawa Yutaka
Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture
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