Solvent Effects on the Photoamination of 1-Amino-2,4-dibromoanthraquinone. II. Dual Mode of the Photoamination in Ethanol<i>via</i>the S<sub>1</sub>(<sup>1</sup>CT) and T<sub>1</sub>(<sup>3</sup>CT) States
作者:Haruo Inoue、Tsutomu Shinoda、Mitsuhiko Hida
DOI:10.1246/bcsj.53.154
日期:1980.1
was investigated. The reaction was accelerated under an air atmosphere (Φair=1.7×10−3, ΦN2=2.3×104, where [butylamine]=5.00×10−2 mol/dm3). A detailed kinetic study indicated that, under nitrogen, the photoamination proceeded via the T1(3CT) state populated by the intersystem crossing from the S1(1CT) state, while under air it proceeded via both the T1(3CT) and the S1(1CT) states. The latter pathway under
研究了丁胺在乙醇中对 1-氨基-2,4-二溴蒽醌 (1) 的光胺化。在空气气氛下加速反应(Φ空气=1.7×10-3,ΦN2=2.3×104,其中[丁胺]=5.00×10-2 mol/dm3)。详细的动力学研究表明,在氮气下,光胺化通过 T1(3CT) 状态进行,由 S1(1CT) 状态的系统间交叉填充,而在空气中,它通过 T1(3CT) 和 S1(1CT) 状态进行) 状态。空气下的后一种途径包括 S1(1CT) 态与氧之间的相互作用,形成激复合物或碰撞复合物,如 [AQδ+…O2δ-]。乙醇中 1 的 T1(3CT) 失活常数比苯中的小一个数量级,比苯中的 1-氨基蒽醌大一个数量级。