tetrafluoroborate (NMQ(+)BF(4)(-)) as sensitizers. In particular, steady-state irradiation with DCA produced carbonyl compounds and, with NMQ(+)BF(4)(-), carbonyl compounds, ethers (substrates 1a-c ) and styrene (substrate 1d ) while time-resolved investigations gave evidence of charged species produced upon irradiation. The effect of solvent polarity on the reactivity was investigated; in the case of DCA
4-甲氧基苄醇(1a),4-甲氧基-
α-甲基苄醇(1b),4,4'-二甲氧基二苯基
甲醇(1c)和4-甲氧基-α,α'-二甲基苄基的稳态和纳秒激光闪光光解测量
酒精(1d)在空气平衡的CH(2)Cl(2)和CH(3)CN溶液中,在
9,10-二氰基蒽(DCA)和N-甲基
喹啉四
氟硼酸盐(NMQ(+)BF)存在下进行(4)(-))作为敏化剂。特别是,用DCA进行稳态辐照会产生羰基化合物,并使用NMQ(+)BF(4)(-)产生羰基化合物,醚(底物1a-c)和
苯乙烯(底物1d),而时间分辨的研究则提供了证据。辐照产生的带电物种的数量。研究了溶剂极性对反应性的影响。在DCA的情况下,反应性随溶剂极性的增加而增加,当使用NMQ(+)BF(4)(-)时获得相反的结果。使用半经验(INDO / 1-CI)和DFT(B3LYP / 6-311G(d))级别的量子力学计算来支持瞬态分配并分别获得电荷和自旋密度分布。