Does intersystem crossing in triplet biradicals generate singlets with conformational memory?
作者:J.C. Scaiano
DOI:10.1016/0040-4020(82)80162-2
日期:1982.1
The effect of temperature, concentration, external magnetic fields and paramagnetic quenchers on the lifetime of biradicals produced in the Norrish Type II reaction has been examined. Analysis of this data and that available from earlier reports leads to the conclusion that in addition to controlling the biradical lifetimes, intersystem crossing in triplet-derived biradicals plays a critical role in
研究了温度,浓度,外部磁场和顺磁性猝灭剂对在Norrish II型反应中产生的双自由基寿命的影响。对这些数据以及较早报告的数据进行分析得出的结论是,除了控制双自由基寿命外,三重态双自由基中的系统间交叉对于确定由单重双自由基反应产生的行为和产物也起着至关重要的作用。该效应归因于单线态双自由基中的构象记忆,这反映了其短寿命。