作者:A. Castellan、G. Dumartin、H. Bouas-Laurent
DOI:10.1016/0040-4020(80)85031-9
日期:1980.1
The fluorescence of acenaphthylene follows a Stern-Volmer relationship in air-saturated ether giving a self-quenching constant KF=0.12M−1, indicating that the syn photodimer originates from the singlet state of acenaphthylene. By comparison, 1-cyanoacenaphthylene undergoes a more efficient self-quenching (KF= 2.8 M−1) in air-saturated ether. No excimer fluorescence was detected for 1-cyanoacenaphthylene
air乙烯的荧光在空气饱和的醚中遵循斯特恩-沃尔默(Stern-Volmer)关系,给出自猝灭常数K F=0.12M -1,表明合成光电二聚体起源于的单重态。相比之下,1-氰基ena烯经历了更有效的自猝灭(K F = 2.8 M -1)在空气饱和的乙醚中。溶液中1-氰基o烯和母体化合物均未检测到准分子荧光。通过敏化或由重原子溶剂(EtI)诱导而获得的1-氰基ph乙烯的三重态显示出以高化学产率独家生成了头对头抗光二聚体。在该反应中观察到的区域专一性和立体专一性表明indicates烯环和氰基在稳定双自由基过渡态中的影响。