【摘要】 研究了逆向光致变色化合物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］的可见光消色机理．通过吸收光谱测定其在不同溶剂及含不同添加剂时，可见光照射后有色体［MC］关环的光量子产率·结果表明O2、三苯基胺等三线态猝灭剂对关环反应光量子产率几乎没有影响．据此提出关环反应主要是通过单线态的途径进行的结论．更多还原

【Abstract】 The mechanism of ring closure process of negative photochromic indoline spiropyran is investigated by its UV-visib1e spectra. The quantum yields of light bleaching process of the colored form in different solvents and with different additives are measured. The results illdicate that the oxygen and other triplet quenching agent such as triphcnyladrine have little effect on the decoloration process. The occurrence of the photodecoloration reaction of the system primarily via a singlet channel can be identified.更多还原