2H NMR study of the behaviour of water in a reversed micellar system. Hydrogen bond breaking and clathrate formation by an inhalation anaesthetic
2H NMR study of the behaviour of water in a reversed micellar system. Hydrogen bond breaking and clathrate formation by an inhalation anaesthetic
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2H NMR 研究水在反胶束系统中的行为。
DOI：
10.1002/mrc.1260270409
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发表时间：
1989
影响因子：
2
通讯作者：
Kensuke Takahashi
中科院分区：
文献类型：
--
作者：
A. Yoshino;T. Yoshida;Kensuke Takahashi
用氘核磁共振研究了水在α -单油酸甘油(GMO) -癸烷- 2H2O体系中的反胶束行为。发现重水的化学位移（δ）和自旋-晶格弛豫时间（T1）与温度有关。T1和δ值的温度依赖性表明，吸入麻醉剂安氟醚引起的重水结构变化在300 K以下和300 K以上有很大差异。在大约300k以下，一个笼状的水多面体围绕着一个安氟醚分子形成。在300 K以上，由于多面体水的氢键断裂，没有水多面体笼状结构，部分水分子被紧紧吸附在安氟醚分子上。
The behaviour of water in the reversed micelles of the glycerol α‐monooleate (GMO)–decane‐2H2O system was investigated by deuteron nuclear magnetic resonance. The chemical shifts (δ) and the spin–lattice relaxation times (T1) of heavy water were found to be dependent on temperature. The temperature dependence of the T1 and δ values reveals that the structural change in heavy water induced by the inhalation anaesthetic enflurane is very different below and above ca. 300 K. Below ca. 300 K a cage of a water polyhedron builds up around an enflurane molecule. Above ca. 300 K there is no water polyhedron cage because of the cleavage of the hydrogen bonds in the polyhedron water, and some of the water molecules are tightly adsorbed on the enflurane molecules.