液态烷烃中水的振动光谱。
The vibrational spectrum of water in liquid alkanes.
作者信息
Conrad M P, Strauss H L
出版信息
Biophys J. 1985 Jul;48(1):117-24. doi: 10.1016/S0006-3495(85)83765-6.
Abstract
The water wire hypothesis of hydrogen-ion transport in lipid bilayers has prompted a search for water aggregates in bulk hydrocarbons. The asymmetric stretching vibration of the water dissolved in n-decane and in a number of other alkanes and alkenes has been observed. The water band in the alkanes is very wide and fits to the results of a J-diffusion calculation for the water rotation. This implies that the water is freely rotating between collisions with the solvent and certainly not hydrogen bonded to anything. The existence of water aggregates is thus most unlikely. In contrast, water in an alkene is hydrogen bonded to the solvent molecules (although not to other water molecules) and shows an entirely different spectrum.
摘要
脂质双分子层中氢离子运输的水线假说引发了对大量碳氢化合物中水聚集体的探索。已观察到溶解在正癸烷以及许多其他烷烃和烯烃中的水的不对称伸缩振动。烷烃中的水带非常宽，与水旋转的J扩散计算结果相符。这意味着水在与溶剂碰撞之间自由旋转，肯定没有与任何物质形成氢键。因此，水聚集体的存在极不可能。相比之下，烯烃中的水与溶剂分子形成氢键（尽管不与其他水分子形成氢键），并显示出完全不同的光谱。
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