| 自由基照相体系的ESR波谱研究 |
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| 引用本文： | 周玉祥,郭金梁,徐广智,石道钧. 自由基照相体系的ESR波谱研究[J]. 影像科学与光化学, 1984, 2(2): 14-23. DOI: 10.7517/j.issn.1674-0475.1984.02.14 |
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| 作者姓名： | 周玉祥 郭金梁 徐广智 石道钧 |
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| 作者单位： | 1. 清华大学化学与化学工程系;2. 中国科学院化学研究所 |
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| 摘 要： | 本文用自旋捕获剂t-BuNO(2-甲基2-亚硝基丙烷)与ESR技术结合的方法研究了CBr4-φ2NH、CBr4-LCV及CBr4-LMG体系的光化学过程。从ESR谱的超精细结构及其随组分浓度的变化,证实了上述体系中除有Br·外,还分别形成了 自由基。由这些体系在避光条件下的UV谱,证明溶液中存在(HX…CBr4)型的部分电荷转移络合物。因此,上述自由基照相体系的光引发反应既包括CBr4的光解,又包括(HX…CBr4)*的光解。
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| 收稿时间： | 1983-06-07 |
A STUDY OF ESR SPECTRA OF SOME RADICAL PHOTOGRAPHIC SYSTEMS |
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| Zhou Yu-xiang,Kuo Jing-lain,Xu Guang-zhi,Shi Dao-jun. A STUDY OF ESR SPECTRA OF SOME RADICAL PHOTOGRAPHIC SYSTEMS[J]. Imaging Science and Photochemistry, 1984, 2(2): 14-23. DOI: 10.7517/j.issn.1674-0475.1984.02.14 |
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| Authors: | Zhou Yu-xiang Kuo Jing-lain Xu Guang-zhi Shi Dao-jun |
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| Affiliation: | 1. Qinghua University;2. Institute of Chemistry, Academia Sinica |
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| Abstract: | The photochemical processes of CBr4-φ2NH, CBr4-LCV and CBr4-LMG systems have been studied with the combination of ESR spectra and spin trapping technique. From the hyperfine structures of ESR spectra, and their variation varying with the concentration ratio of CBr4 to φ2NH or LCV or LMG, the free radicals such as (C6H5NHC6H5)3 C, [(CH3)2NC6H5]3C and [(CH3)2NC6H5]2 C-C6H5 have been identified in these systems respectively in addition to Br.It could be shown that the partial charge-transfer complexes (CBr4φ2NH)*, (CBr4-LCV)* and (CBr4-LMG)* have been formed with the UV absorption spectra of these systems. Therefore, it is concluded that the photochemical initial step of the above free radical photographic systems includes photolysis of both CBr4 and (CBr4-HX)* (HX =φ2NH, LCV, LMG). |
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