A kinetic study on the chemiluminescence of 9-alkylacridines upon air oxidation in alkaline aprotic solvents.
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概要
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9-Methyl- (<B>1a</B>), 9-benzyl- (<B>1b</B>), 9-(diphenylmethyl)- (<B>1c</B>), and 9-ethylacridine (<B>1d</B>) were employed to obtain luminescent features of the acridines. The decay of chemiluminescence (CL) exhibits a pseudo-first order behavior with apparent rate constants 0.10, 3.30, 4.10, and 0.07 min<SUP>−1</SUP> at 312 K for <B>1a</B>, <B>1b</B>, <B>1c</B>, and <B>1d</B>, respectively. A relatively high CL quantum yield (6.3×10<SUP>−3</SUP>) is provided for <B>1a</B>, in contrast to low yields for <B>1b</B>, <B>1c</B>, and <B>1d</B> (1.5×10<SUP>−6</SUP>, 1.1×10<SUP>−5</SUP>, and 1.3×10<SUP>−4</SUP>, respectively). A reaction mechanism involving a cleavage of a dioxetane intermediate to give excited singlet acridone anion is plausible for the luminescent reaction. In view of the fact that several dioxetanes decompose to give excited singlet products in high yields, the CL appears to arise from a minor reaction.
- 公益社団法人 日本化学会の論文
著者
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Sugimoto Takashi
Department Of Chemical Engineering And Materials Science Faculty Of Engineering Doshisha University
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Kamiya Isao
Department of Chemistry, College of General Education, Nagoya University
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Yamabe Kuniaki
Department of Industrial Chemistry, Sasebo Technical College
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