螺吡喃逆向变色光量子产率测定及其光致变色特性研究  

A STUDY ON THE INVERSELY PHOTO-CHROMIC BEHAVIOR AND PHOTO-BLEACHING OUANTUM YIELD OF AN INDOLINE SPIROPYRAN

作　　者：周金渭[1] 张复实[1] 李毅婷[1] 赵福群[1] 唐应武[1] 宋心琦[1] 李二成[1] 

机构地区：[1]清华大学化学系,中国科学院化学研究所

出　　处：《感光科学与光化学》1995年第4期294-300,共7页Photographic Science and Photochemistry

摘　　要：研究了１’－十八烷基－３’，３’，－二甲基－６，８－二硝基螺［２Ｈ－１－苯并吡喃－２，２’－吲哚啉］的逆向光致变色特性，通过吸收光谱测定了其在不同溶剂中可见光照后无色体（ＳＰ）的开环生色速率常数及在甲醇中有色体（ＭＣ）光照关环的光量子产率，发现溶剂的极性对开环有色体（ＭＣ）的吸收光谱影响较大，但对无色体的开环速率常数的影响相对较小。利用￣１ＨＮＭＲ分析了ＳＰ和ＭＣ的结构，证实了ＭＣ处于反式构型．The inversely photochromic property of an indoline spiropyran is investigated by UV-visible and ￣1 HNMR spectra. The results indicate that the polarity of solvent has promineneffect on the λ_(max) of its colored merocyanine form(MC),but the effects on the λ_(max) of theclosed form(SP) and the coloration rate after visible bleaching are rather weak. The lighbleaching quantum yield of the colored form in methanol is determinated to be 0.096,Fromthe ￣1 HNMR spectra,the structural characteristics of MC,SP are analyzed.

关 键 词：逆向光致变色 螺吡喃 光量子产率 光致变色 

分 类 号：O644.1[理学—物理化学]