| 2,3-二羧基-双环[2.2.1]2,5-庚二烯价键异构化反应的研究 |
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| 引用本文： | 孟宪娟,明阳福,樊美公. 2,3-二羧基-双环[2.2.1]2,5-庚二烯价键异构化反应的研究[J]. 影像科学与光化学, 1993, 11(2): 36-39. DOI: 10.7517/j.issn.1674-0475.1993.02.36 |
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| 作者姓名： | 孟宪娟 明阳福 樊美公 |
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| 作者单位： | 中国科学院感光化学研究所, 北京 100101 |
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| 摘 要： | 以聚四苯基卟啉(P-TPP)为敏化剂,研究了2,3-二羧基-双环[2.2.1]-2,5-庚二烯(N)的光化学价键异构化反应,在0.1mol/L的碳酸钠甲醇溶剂中,在适量的P-TPP存在下,可见光照射时,N可以定量地转化为2,3-二羧基四环[2.2.1.02,6.03,5]庚烷(Q),Q在聚四苯基卟啉钴络合物(Co-P-TPP)催化剂的作用下,又可定量地异构化返回N.分别研究了敏化剂和催化剂用量对反应的影响。通过反应物之间激发态能量的比较及N对P-TPP荧光的猝灭试验,证明光异构化反应是通过电子转移反应机制进行的。
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| 关 键 词： | 价键异构 光敏化 聚四苯基卟啉 2 3-二羧基-双环[2.2.1]-2 5-庚二烯 |
| 收稿时间： | 1992-04-27 |
STUDY ON PHOTOCHEMICAL VALENCE ISOMERIZATION OF BICYCLO-[2.2.1]-2,3-DICARBOXY-2, 5-HEPTADIENE |
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| MENG XIAN-JUAN,MING YANG-FU,FAN MEI-GONG. STUDY ON PHOTOCHEMICAL VALENCE ISOMERIZATION OF BICYCLO-[2.2.1]-2,3-DICARBOXY-2, 5-HEPTADIENE[J]. Imaging Science and Photochemistry, 1993, 11(2): 36-39. DOI: 10.7517/j.issn.1674-0475.1993.02.36 |
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| Authors: | MENG XIAN-JUAN MING YANG-FU FAN MEI-GONG |
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| Affiliation: | Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P.R. China |
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| Abstract: | Photochemical valence isomerization of bicyclo [2. 2. 1] -2, 3 -dicarboxy -2, 5 -heptadiene (N) to quadrocyclo[2.2.1.02,3. 05,6]-2, 3 - dicarboxy heptane (Q) was performed by using polytetraphenyl-porphrine(P-TPP)as sensitizer. In addition, The Q can be easily converted into N under the presence of catalyst, Cobalt (Ⅱ) polytetraphenylpor-phrine (Co-P-TPP). The effects of the sensitizer and the catalyst on these isomerization reaction were tested. The comparation between the excited state energy of P - TPP and N indicated that photochemical valence isomerization may go by way of electron transfer from P-TPP to N. The support for the electron transfer machenism is fluorescence quenching of P-TPP by N. |
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| Keywords: | valence isomerization photosensitized reaction polytetraphenylpor-phrine bicyclo[2.2.1]-2 3-dicatboxy-2 5-heptadiene |
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