of the temperature, initial concentration, and chemical quenchers on dual photoreactions of phthalazine were investigated. The results give further supporting evidence for a previously proposed reaction mechanism, i.e., phthalazine in the lowest excited singlet and triplet states affords singlet and triplet radical pairs, respectively, in the initial hydrogen abstraction process from 2-propanol. The
研究了温度、初始浓度和
化学猝灭剂对
酞嗪双光反应的影响。结果为先前提出的反应机制提供了进一步的支持证据,即在从 2-
丙醇中提取氢的初始过程中,处于最低激发单线态和三线态的
酞嗪分别提供单线态和三线态自由基对。单线态自由基对在溶剂笼中产生还原产物,而三重态产生的自由基从溶剂笼中逸出,导致二聚化。基于双光反应的反应机理,研究了外部重原子对溶剂笼内自由基对的影响。