| 光诱导4-硝基喹啉氧化物与甲硫氨酸衍生物的电子转移 |
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| 引用本文： | 徐业平,宋钦华,马兴孝,王文锋,姚思德.光诱导4-硝基喹啉氧化物与甲硫氨酸衍生物的电子转移[J].辐射研究与辐射工艺学报,1999,17(4):239-241. |
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| 作者姓名： | 徐业平 宋钦华 马兴孝 王文锋 姚思德 |
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| 作者单位： | 1. 中国科学技术大学化学物理系,合肥,230026
2. 中国科学院上海原子核研究所辐射化学开放实验室,上海,201800 |
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| 摘 要： | 利用纳秒级激光光解瞬态吸收光谱装置，研究了４－硝基喹啉氧化物（４ＮＱＯ）与含硫氨基酸及其肽的光化学反应。水溶液中的４ＮＱＯ被２４８ｎｍ激光激发，生成４ＮＱＯ三重态，并在４１０ｎｍ和５９０ｎｍ观察到它的特征吸收，４ＮＱＯ激发三重态能被甲硫氨酸及其肽猝灭，其过程是电子转移反应，生成４ＮＱＯ的加氢自由基和甲硫氨酸及其肽抽氧自由基。
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| 关 键 词： | 4-硝基喹啉氧化物 激光光解 电子转移 激发三重态 |
LASER INDUCED REACTION OF ELECTRON TRANSFER FROM METHIONINE AND ITS DIPEPTIDES TO TRIPLET 4-NITROQUINOLINE 1-OXIDE |
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| XU Yeping,SONG Qinhua,MA Xingxiao,WANG Wenfeng,YAO Side.LASER INDUCED REACTION OF ELECTRON TRANSFER FROM METHIONINE AND ITS DIPEPTIDES TO TRIPLET 4-NITROQUINOLINE 1-OXIDE[J].Journal of Radiation Research and Radiation Processing,1999,17(4):239-241. |
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| Authors: | XU Yeping SONG Qinhua MA Xingxiao WANG Wenfeng YAO Side |
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| Abstract: | Photochemical reactions of 4-nitroquinoline 1-oxide (4NQO) with D-methionine (Met) and its dipeptides have been studied by using 248nm laser flash photolysis technique. Triplet state of 4NQO can be quenched by Met and its dipeptides, and produce radicals via electron transfer between triplet excited state of 4NQO and Met-containing compounds. |
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| Keywords: | 4NQO Laser flash photolysis Electron transfer Excited triplet state |
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