| CCl2(A 1B 1,a3B1)自由基被烷烃类分子猝灭动力学 |
| |
| 引用本文： | 高义德,胡长进,金瑾,陈旸,陈从香. CCl2(A 1B 1,a3B1)自由基被烷烃类分子猝灭动力学[J]. 物理化学学报, 2001, 17(6): 516-520. DOI: 10.3866/PKU.WHXB20010609 |
| |
| 作者姓名： | 高义德 胡长进 金瑾 陈旸 陈从香 |
| |
| 作者单位： | Open Laboratory of Bond Selective Chemistry,Department of Chemical physics,Univ ersity of Science and Technology of China ,Hefei ,Anhui 230026 |
| |
| 基金项目： | 国家自然科学基金（299730380）资助项目、中国科学院重大项目资助课题（ HH030301）和国家重点基础研究专项基金资助项目(G1999075304) |
| |
| 摘 要： | 用放电 LIF实验装置,对CCl4/Ar混合气体放电产生CCl2自由基,再用541.52 nm激光将电子基态CCl2激励到激发态A 1B1(0,4,0)振动能级上,通过检测激发态CCl2时间分辨荧光信号,测得室温下CCl2(A 1B1)被烷烃类分子猝灭的实验结果,用我们提出的三能级模型分析处理实验数据,获得CCl2(A 1B1)态和CCl2(a 3B1)态的碰撞猝灭速率常数kA和ka值.
|
| 关 键 词： | CCl2(A 1B 1 a3B1) 烷烃分子 动力学 猝灭速率常数 三能级模型 |
| 收稿时间： | 2000-11-06 |
| 修稿时间： | 2000-11-06 |
Kinetic Studies onQuenching of CCl2(A 1B1 and a 3B1)by Alkanes |
| |
| Gao Yi-De. Kinetic Studies onQuenching of CCl2(A 1B1 and a 3B1)by Alkanes[J]. Acta Physico-Chimica Sinica, 2001, 17(6): 516-520. DOI: 10.3866/PKU.WHXB20010609 |
| |
| Authors: | Gao Yi-De |
| |
| Affiliation: | Open Laboratory of Bond Selective Chemistry,Department of Chemical physics,Univ ersity of Science and Technology of China ,Hefei ,Anhui 230026 |
| |
| Abstract: | CCl2 free radicals were produced by dc discharge of CCl4(in Ar).Ground electronic state CCl2 radical was electronically excited to A 1B1 (0,4,0) state with Nd:YAG laser pumped dye laser at 541.52 nm.Experimental quenching data of CCl2 (A 1B1 and a 3B1) by alkanes were obtained by observing time resolved fluorescence from the excited CCl2 radicals transition,which showed a superposition of two exponential decay components.The state resolved rate constants kA and ka were first time acquired by analyzing and treating these data by using three level model,which was put forward by us.kA and ka increase on the whole with increasing the number of C－H bonds in alkanes. |
| |
| Keywords: | 2(A 1B 1,a3B1)',') " >CCl2(A 1B 1,a3B1) Alkanes Kinetics Quenching rate constant Three-level-model |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
|
点击此处可从《物理化学学报》下载全文 |
|
