| 大分子中磁偶极弛豫的分离 |
| |
| 引用本文： | 缪希茄,胡皆汉.大分子中磁偶极弛豫的分离[J].波谱学杂志,1994,11(2):181-186. |
| |
| 作者姓名： | 缪希茄 胡皆汉 |
| |
| 作者单位： | 1. 中国科学院大连化学物理研究所, 大连 116023;2. 中国科学院武汉物理研究所波谱及原子分子物理国家重点实验室, 武汉 430071 |
| |
| 摘 要： | 提出采用仅与偶极弛豫有关的13C核同1H核之间的核交叉弛豫速率来考察分子内部运动状况。给出了实际用于考察分子运动状况的关系式,从理论上阐明了本文方法比传统上直接采用常规测定的13C核纵向弛豫时间T1、演向弛豫时间T2及NOE增强因子η来研究分子运动状况的方法要合理。建立了既适用于小分子又适用于大分子自旋系统13C核总自旋弛豫中偶极弛豫分离的公式.
|
| 关 键 词： | 大分子 偶极弛豫 非偶极弛豫核交叉弛豫速率 13C核自旋弛豫 |
| 收稿时间： | 1993-02-18 |
THE SEPARATION OF HETERONUCLEAR DIPOLAR RELAXATION IN MACROMOLECULE |
| |
| Miao Xijia,Hu Jiehan,Han Xiuwen.THE SEPARATION OF HETERONUCLEAR DIPOLAR RELAXATION IN MACROMOLECULE[J].Chinese Journal of Magnetic Resonance,1994,11(2):181-186. |
| |
| Authors: | Miao Xijia Hu Jiehan Han Xiuwen |
| |
| Institution: | 1. Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023;2. State key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of physics, The Chinese Academy or |
| |
| Abstract: | It is proposed that only the heteronuclear cross relaxation rates between 13C and 1H,which are only dependent on the diporlar relaxation,are used to investigate the mo-lecular internal motions,The new method is more reasonable than the conventional one in theory where the nuclear longitudinal relaxation time T1,transvcrse relaxation T2 and NOE factor η are used to study the molecular internal motions. The general formu-la separating the contribution of dipolar relaxation to the total 13C spin relaxation is set up. It can be applied not only to small molecules inside extreme narrowing condi-tion but also to macromolecules outside extreme narrowing. |
| |
| Keywords: | Macromolecule Dipolar relaxation Nondipolar relaxation Nuclear cross relaxation 13C spin relaxation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《波谱学杂志》浏览原始摘要信息 |
| 点击此处可从《波谱学杂志》下载免费的PDF全文 |
