Laser flash photolysis of benzene. VI. Photolysis in aqueous solution.
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概要
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Three transient absorption spectra in aqueous solution were observed by irradiation of benzene with an excimer laser (KrF, 248 nm or ArF, 193 nm). A short-lived absorption with a peak at 275 nm is assigned to the S<SUB>n</SUB>←S<SUB>1</SUB> absorption. A long-lived absorption, which appears as a clear shoulder at 230 nm, stays longer than 500 ns and is not shortened by oxygen. This species is tentatively assigned to benzvalene, and the quantum yield is determined to be <I>ca.</I> 0.1. Solvated electron with a peak at 720 nm was formed <I>via</I> multiphoton processes at a power level of 60 mJ/cm<SUP>2</SUP> of an ArF laser. The T<SUB>n</SUB>←T<SUB>1</SUB> absorption was lower than our detection limit (<I>Φ</I><SUB>T</SUB><0.1).
- 公益社団法人 日本化学会の論文
著者
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NAKASHIMA Nobuaki
Institute of Environmental Toxicology
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YOSHIHARA Keitaro
Institute for Molecular Science
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Shimo Nobuo
Institute for Molecular Science
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