| 一种逆向光致变色螺吡喃化合物的光消色关环反应机理研究 |
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| 引用本文： | 李毅婷,周金渭,张复实,王艳乔,宋心琦.一种逆向光致变色螺吡喃化合物的光消色关环反应机理研究[J].物理化学学报,1997,13(9):808-814. |
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| 作者姓名： | 李毅婷 周金渭 张复实 王艳乔 宋心琦 |
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| 作者单位： | Department of Chemistry,Tsinghua University,Beijing 100084,Institute of Chemistry Academia Sinica,Beijing 100080 |
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| 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。
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| 关 键 词： | 逆向光致变色 吲哚啉螺吡喃 光量子产率 |
| 收稿时间： | 1996-12-05 |
| 修稿时间： | 1997-04-02 |
Mechanistic Study on the Ring Closure Process of a Negative Photochromic Spiropyran |
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| Li Yiting, Zhou Jinwei, Zhang Fushi,Wang Yanqiao,Song Xinqi.Mechanistic Study on the Ring Closure Process of a Negative Photochromic Spiropyran[J].Acta Physico-Chimica Sinica,1997,13(9):808-814. |
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| Authors: | Li Yiting Zhou Jinwei Zhang Fushi Wang Yanqiao Song Xinqi |
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| Institution: | Department of Chemistry,Tsinghua University,Beijing 100084|Institute of Chemistry Academia Sinica,Beijing 100080 |
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| 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. |
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| Keywords: | Negative photochromism Indoline spiropyran Quantum yield |
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