Interaction between hypocrellin and aliphatic amines  

作　　者：张曼华 陈申 夏万林 蒋丽金 陈德文 

机构地区：[1]Institute of Photographic Chemistry, Chinese Academy ot Sciences, Beijing 100101, China [2]Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Science China Chemistry》1996年第6期568-576,共9页中国科学（化学英文版）

基　　金：Project supported by the National Natural Science Foundation of China

摘　　要：The interaction of hypocrellin, including hypocrellin A (HA) and hypocrellin B (HB), with aliphatic amines in deaerated solutions has been studied by ESR and nanosecond transient absorption spectra. In polar solvents, the acid-base interaction between hypocrellin and amines was observed without irradiation. The signals of semiquinone radical anions of hypocrellm and the spin-trapping adduct of α-phenyl-N-tertbutyl-ratrone (PNB) with the aminoalkyl radicals have been detected in photoinduced ESR studies. The transient absorption of excited triplet state of HA and semiquinone radical anion of HA have been observed in laser flash photolysis studies.The interaction of hypocrellin, including hypocrellin A (HA) and hypocrellin B (HB), with aliphatic amines in deaerated solutions has been studied by ESR and nanosecond transient absorption spectra. In polar solvents, the acid-base interaction between hypocrellin and amines was observed without irradiation. The signals of semiquinone radical anions of hypocrellm and the spin-trapping adduct of α-phenyl-N-tertbutyl-ratrone (PNB) with the aminoalkyl radicals have been detected in photoinduced ESR studies. The transient absorption of excited triplet state of HA and semiquinone radical anion of HA have been observed in laser flash photolysis studies.

关 键 词：HYPOCRELLIN (HA and HB) SEMIQUINONE radical ANION ALIPHATIC AMINES ESR nanosecond TIME-RESOLVED transient absorption. 

分 类 号：O621[理学—有机化学]