固态富马酸单乙酯在变温1H MAS与CRAMPS研究

波谱学杂志 ›› 1996, Vol. 13 ›› Issue (1): 1-10.

• 研究论文 • 下一篇

固态富马酸单乙酯在变温¹H MAS与CRAMPS研究

胡建治, 邓风, 周进元, 冯汉桥, 杨年华, 李丽云, 叶朝辉

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

收稿日期:1995-10-05 出版日期:1996-02-05 发布日期:2018-01-17
基金资助:
This work was supported by the Natural Science Foundation of China.

VARIABLE TEMPERATURE STUDIES OF FUMARIC ACID MONOETHYL ESTER BY SOLID STATE ¹H MAS AND ¹H CRAMPS SPECTROSCOPIES

Hu Jianzhi, Deng Feng, Zhou Jinyuan, Feng Hanqiao, Yang Nianhua, Li Liyun, Ye Chaohui

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute or Physics, the Chinese Academy of Science, Wuhan 430071, P. O. Box. 71010, P. R. C

Received:1995-10-05 Online:1996-02-05 Published:2018-01-17
Supported by:
This work was supported by the Natural Science Foundation of China.

摘要/Abstract

摘要： 富马酸单乙酯(FAME)的单脉冲¹H MAS谱由-高分辨成分与-宽线谱成分组成.高分辨成分可由Hahn回波脉冲序列单独获得.文中通过变温¹H MAS与CRAMPS实验对两组分的性质进行了系统的研究.发现当温度趋于样品的熔点时,其¹H CRAMPS谱可观察到化学位移明显区别的两套谱,它们分别对应于¹H MAS谱的高分辨与宽线组分.实验表明:高分辨成分来自FAME样品的-塑性相,而宽线组分来自通常的刚性相.文中所给出的实验事实充分说明¹H MAS与CRAMPS技术是研究有机塑性固体的强有力的工具.

关键词: 变温, ¹H MAS和CRAMPS, 富马酸单乙酯, 塑性相

Abstract: The ¹H MAS spectrum of fumaric acid monoetbyl ester recorded by a single pulse experiment is composed of a high resolution component and a broadline component.The high resolution component can be well separated from the broadline component using Hahn echo sequence with a long echo time.The properties of both components are investigated by variable temperature ¹H MAS and CRAMPS experiments.Two sets of resonances are observed in the CRAMPS spectrum as the temperature approaches the melting point of the sample.It is confurmed that the high resolution component is produced by a plastic phase in the solid,while the broadline component is generated by the rest of the solid,i.e., the rigid phase.The experimental resultS sufficiently demonstrate that the modern NMR techniques,¹H MAS and CRAMPS,are very useful tools for the studying of plaStic organic solids because of their enhanced spectal resolution.

Key words: Variable temperature, ¹H MAS and CRAMPS, Fumaric acid monoethyl ester, Plastic phase

胡建治, 邓风, 周进元, 冯汉桥, 杨年华, 李丽云, 叶朝辉. 固态富马酸单乙酯在变温¹H MAS与CRAMPS研究[J]. 波谱学杂志, 1996, 13(1): 1-10.

Hu Jianzhi, Deng Feng, Zhou Jinyuan, Feng Hanqiao, Yang Nianhua, Li Liyun, Ye Chaohui. VARIABLE TEMPERATURE STUDIES OF FUMARIC ACID MONOETHYL ESTER BY SOLID STATE ¹H MAS AND ¹H CRAMPS SPECTROSCOPIES[J]. Chinese Journal of Magnetic Resonance, 1996, 13(1): 1-10.

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固态富马酸单乙酯在变温¹H MAS与CRAMPS研究

VARIABLE TEMPERATURE STUDIES OF FUMARIC ACID MONOETHYL ESTER BY SOLID STATE ¹H MAS AND ¹H CRAMPS SPECTROSCOPIES

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