摘要
研究了1-正-辛基-3,3-二甲基-吲哚啉-2,2′-螺-5′,6′-(2-溴-4-硝基-苯并)吡喃,1-正-辛基-3,3-二甲基-吲哚啉-2,2′-螺-5′,6′-(4-硝基-苯并)吡喃,1-正-辛基-3,3-二甲基-吲哚啉-2,2′-螺-5′,6′-(2,4-二硝基-苯并)吡喃及1-正-辛基-3,3-二甲基-吲哚啉-2,2′螺-5′6′-(2-氯-4-硝基-苯并)吡喃在环已烷和甲苯溶液中光致开环过程的瞬态吸收光谱。观察到具有较长寿命的中间体及聚集体的存在。初步提出异构化反应过程的机制中既包含有三重态过程,也有单重态参与。
Transient absorption spectra in the photocolouration of 1-n-octyl-3,3-dimethylindolino-2,2'-spiro-5',6'-(2-bromo-4-nitro-benzo)-pyran (SPP1), 1-n-octyl-3,3-dimethyl-indolinn-2,2'-spiro-5',6'-(4-nitro-benzo)-pyran (SPP2), 1-n-octyl-3,3-dimethylindolino-2,2'-spiro-5', 6'-(2, 4-dinitro-benzo)-pyran (SPP3) and 1-n-octyl-3,3-dimethylindolino-2,2'-spiro-5', 6'-(2-chloro-4-nitro-benzo)-pyran (SPP4) in toluene and eyclohexane were investigated with nanosecond laser photolysis. Several certain intermediats and an aggregate were observed. The mechanism of the isomerization involves not only triplet process but also singlet process.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1989年第6期677-677,共1页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
