| CCl2(A1B1和a3B1)被酮类分子猝灭速率常数的测定 |
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| 引用本文： | 高义德,金瑾,刘云珍,张立敏,陈晻,陈从香. CCl2(A1B1和a3B1)被酮类分子猝灭速率常数的测定[J]. 化学物理学报(中文版), 2001, 14(3): 257-262. DOI: 10.1088/1674-0068/14/3/257-262 |
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| 作者姓名： | 高义德 金瑾 刘云珍 张立敏 陈晻 陈从香 |
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| 作者单位： | 中国科学技术大学化学物理系, |
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| 基金项目： | 国家自然科学基金，中国科学院资助项目，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 对CCl4/Ar混合气体脉冲直流高压放电产生CCl2自由基,经过约110μs后,再用541.52mm激光将电子基态CC2激励到激发态A1B1(0,4,0)振动态K=0能级上,通过检测激发态CCl2(A)时间分辨荧光信号,测得室温下CC2(A1B1和a3B1)被酮类分子猝灭的实验结果,用所提出的三能级模型分析处理实验数据,获得态分辨速率常数KA和Ka值.
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| 关 键 词： | 酮类分子 动力学 猝灭速率常数 三能级模型 |
The Measurements of Quenching Rate Constants of CCI2 (A1B1and a3B1) by Ketones |
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| Gao Yide,Jin Jin,Liu Yunzhen,Zhang Limin,Chen Yang,Chen Congxiang. The Measurements of Quenching Rate Constants of CCI2 (A1B1and a3B1) by Ketones[J]. Chinese Journal of Chemical Physics, 2001, 14(3): 257-262. DOI: 10.1088/1674-0068/14/3/257-262 |
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| Authors: | Gao Yide Jin Jin Liu Yunzhen Zhang Limin Chen Yang Chen Congxiang |
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| Abstract: | CCl2free radicals were produced by dc discharge of CCl4(in Ar). Ground electronic state CCl2radical was electronically excited to A1B1(0,4,0) state with Nd:YAG laser pumpeddye laser at 541.52nm. Experimental quenching data of CCl2(A1B1and a3B1) by several ketones were obtained through observing time resolved fluorescence signal of the excited CCl2radicals, which showed a superposition of two exponential decay components. The state-resolved rate constantsKAandKawere first time acquired by analyzing and dealing with these data by using three-level-model, which was put forward by us.KAandKaincrease on the whole with increasing the number of C-H bonds in ketones. |
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| Keywords: | CCl2(A1B1 a3B1) |
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