Pulsed laser excitation studies on the reactive species in 9-cyanoanthracene(CNA)-sensitized oxygenation of 1,1-diphenyl-2-methylpropene (1a) and (E)-2,3-diphenyl-2-butene (1b) show that the reaction course is mostly governed by competitive quenching of the CNA excited singlet by 1 and oxygen to produce 1+• and 1O2, respectively. The results indicate that the reaction courses of tetraphenylethylene
对
9-氰基蒽 (CNA) 敏化氧化 1,1
-二苯基-2-甲基丙烯 (1a) 和 (E)-2,3
-二苯基-2-丁烯 (1b) 中活性物质的脉冲激光激发研究表明,反应过程主要由 CNA 激发的单线态 1 和氧的竞争性猝灭控制,分别产生 1+• 和 1O2。结果表明,例如,四苯基
乙烯和
2,3-二甲基-2-丁烯的反应过程可以通过烯烃和
氧气对敏化剂单线态的排他性猝灭来解释。