| DMF-H2O和DMF-D2O体系中13N弛豫的动态同位素效应的研究 |
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| 引用本文： | 黎明 毛希安. DMF-H2O和DMF-D2O体系中13N弛豫的动态同位素效应的研究[J]. 波谱学杂志, 1994, 11(2): 195-200 |
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| 作者姓名： | 黎明 毛希安 |
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| 作者单位： | 中国科学院武汉物理研究所波谱与原子分子物理国家重点实验室, 武汉 430071 |
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| 基金项目： | 中国科学院归国留学人员择优资助项目 |
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| 摘 要： | 本文测定了DMF-H2O和DMF-D2O体系在全部浓度范围内(摩尔分数为0~1) DMF分子中四极核14N的弛豫时间,讨论了弛豫的溶剂同位素效应和影响四极核弛豫的因素。研究结果表明,体系中14N的弛豫与溶剂水分子的动力学行为有着密切的联系,在无限稀释条件下溶质分子的运动完全受溶剂分子的控制.
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| 关 键 词： | 14N弛豫 同位素效应 DMF |
| 收稿时间： | 1993-05-06 |
STUDY OF THE ISOTOPE EFFECT ON 14N RELAXATION IN DMF/H2O AND DMF/D2O SYSTEMS |
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| Li Ming,Mao Xian. STUDY OF THE ISOTOPE EFFECT ON 14N RELAXATION IN DMF/H2O AND DMF/D2O SYSTEMS[J]. Chinese Journal of Magnetic Resonance, 1994, 11(2): 195-200 |
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| Authors: | Li Ming Mao Xian |
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| Affiliation: | State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, The Chinese Academy or Sciences, Wuhan 430071 |
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| Abstract: | In the present paper,the dynamic isotope effect of 14N relaxation of DMF/H2O(D2O) system is reportcd.The 14N rclaxation times of DMF in DMF/H2O and DMF/D2O systems have been measured through all composition range (mole fraction of DMF from 0 to 1).The solvent isotope effect on relaxation and the factors affecting the quadrupole relaxation are discussed.The results suggest that in the given system there is a close relationship between the 14N relaxation and the kinetics of solvent water.Under infinite dilutions,the kinetics of the solute molcculcs are controlled complctely by the solvent molecules. |
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| Keywords: | 14N relaxation Isotope effect DMF |
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