| 溴化银微晶和羧酸盐水溶液体系中的光生自由基的形成 |
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| 引用本文： | 国红,姚林辉,史瑶,陈景荣,夏培杰. 溴化银微晶和羧酸盐水溶液体系中的光生自由基的形成[J]. 影像科学与光化学, 2003, 21(2): 89-94. DOI: 10.7517/j.issn.1674-0475.2003.02.89 |
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| 作者姓名： | 国红 姚林辉 史瑶 陈景荣 夏培杰 |
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| 作者单位： | 中国科学院, 理化技术研究所, 北京100101 |
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| 基金项目： | 国家自然科学基金，美国Kodak公司资助项目 |
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| 摘 要： | 利用ESR电子自旋捕捉技术,研究了甲酸钠,乙酸钠,草酸钾等羧酸盐的水溶液及其含有AgBr的分散体系在不同光照条件下自由基的产生.结果表明:某些羧酸盐(特别是甲酸盐)自身具有光解性,而且AgBr的存在对其光解过程有促进作用.这对研究羧酸盐掺杂乳剂尤其是甲酸盐掺杂乳剂的增感机理有重要意义.
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| 关 键 词： | 羧酸盐的光生自由基 ESR自旋捕捉技术 空穴清除剂 |
| 收稿时间： | 2002-07-14 |
FORMATION OF PHOTOGENERATED RADICALS OF SOME CARBOXYLATES IN AQUEOUS SOLUTION WITH DISPERSED AgBr |
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| GUO Hong,YAO Lin-hui,SHI Yao,CHEN Jing-rong,XIA Pei-jie. FORMATION OF PHOTOGENERATED RADICALS OF SOME CARBOXYLATES IN AQUEOUS SOLUTION WITH DISPERSED AgBr[J]. Imaging Science and Photochemistry, 2003, 21(2): 89-94. DOI: 10.7517/j.issn.1674-0475.2003.02.89 |
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| Authors: | GUO Hong YAO Lin-hui SHI Yao CHEN Jing-rong XIA Pei-jie |
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| Affiliation: | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China |
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| Abstract: | Free radicals generated during different illumination conditions of HCOONa,K2C2O4, and CH3COONa solutions with or without AgBr grains dispersed were investigated by ESR spin trapping.The ESR spectra of different radicals were detected.The results indicated that some carboxylates,especially formate,were of a sensitive photodecomposition and could be enhanced by AgBr grains under illumination.These results were believed to be quite helpful,particularly to study on the mechanism of sensitization for some doped emulsions with carboxylates,such as formate etc. |
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| Keywords: | photogenerated radical of carboxylates ESR spin trapping hole scavenger |
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