Spectroscopic Studies on the Intramolecular Hydrogen Abstraction Reactions of<i>n</i>-Alkyl Anthraquinone-2-carboxylates
作者:Yoshifumi Tanimoto、Megumu Uehara、Masanobu Takashima、Michiya Itoh
DOI:10.1246/bcsj.61.3121
日期:1988.9
dependence of the intramolecular hydrogen abstraction reaction of n-alkyl anthraquinone-2-carboxylates (AQ-n, n=2–20) has been studied by steady-state photolysis, phosphorescence, laser flash photolysis, and two-step laser induced fluorescence spectroscopies. All the results indicate that the excited triplet of the anthraquinone chromophore abstracts a hydrogen atom from its methylene side chain, whose rate
已经通过稳态光解、磷光、激光闪光光解和两步激光诱导研究了 n-烷基蒽醌-2-羧酸酯(AQ-n,n=2-20)的分子内夺氢反应的链长依赖性荧光光谱。所有结果表明,蒽醌发色团的激发三重态从其亚甲基侧链中夺取了一个氢原子,其速率随着链长的增加而增加。AQ-8 的速率常数为 1×104 s-1,n≥10 时,每增加一个亚甲基单元,速率增加约 1.5×104 s-1。