Volke F, Eisenblätter S, Klose G
Faculty of Physics and Geophysics, University of Leipzig, Germany.
Biophys J. 1994 Nov;67(5):1882-7. doi: 10.1016/S0006-3495(94)80670-8.
The continuous decrease of the quadrupolar splitting of deuterated water interacting with phosphocholine lipid bilayers with growing water concentration is analyzed as a function of the water activity. From the apparent linear dependence on water activity a measure for hydration forces is obtained. The forces calculated are in the range of published data using sorption isotherms and osmotic stress technique in combination with SAXS. A simple interaction potential which includes orientational order of water adsorbed on surfaces gives a physical base for these findings. Therefore, deuterium NMR may become a powerful tool for hydration force analysis complementing well-known methods.
分析了随着水浓度增加，与磷酸胆碱脂质双层相互作用的重水四极分裂的持续降低与水活度的函数关系。从与水活度的明显线性依赖关系中获得了水合力的一种度量。计算得到的力处于使用吸附等温线和渗透应力技术结合小角X射线散射（SAXS）所发表数据的范围内。一个包含吸附在表面的水的取向有序性的简单相互作用势为这些发现提供了物理基础。因此，氘核磁共振可能成为一种强大的水合力分析工具，对众所周知的方法起到很好的补充作用。
