作者:Sang Chul Shim、Tae Suk Lee
DOI:10.1039/p29900001739
日期:——
Irradiation of 1-(1-naphthyl)buta-1,3-diynes (1)–(3) in aqueous sulphuric acid yields both type-A (4), (6), (8) and type-B (5), (7), (9) hydration products. The type A/B product ratio was 0.8–1 : 1 in neutral conditions, while the ratio increases as the acidity of the medium increases. The fluorescence of compounds (1) and (3) decreased but that of compound (2) was invariant with increasing acidity
在硫酸水溶液中辐照1-(1-萘基)buta-1,3-diynes(1)-(3)产生A型(4),(6),(8)和B型(5) ,(7),(9)水合产物。在中性条件下,A / B型产物的比率为0.8-1:1,而随着介质酸度的增加,比率也随之增加。化合物(1)和(3)的荧光减弱,化合物(2)的荧光减弱。)随着酸度的增加而不变。中等酸度对水合量子产率的影响,以及a氮猝灭研究表明,当R为烷基时,单重态激发态同时产生A型和B型光加合物,而三重态激发态仅产生B型光加合物。团体。