Enhancement of the Hydrogen-Bonding Network of Water Confined in a Polyelectrolyte Brush
Enhancement of the Hydrogen-Bonding Network of Water Confined in a Polyelectrolyte Brush
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DOI：
10.1021/acs.langmuir.7b00243
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发表时间：
2017-04-25
期刊：
影响因子：
3.9
通讯作者：
Harada, Yoshihisa
中科院分区：
文献类型：
--
作者：
Yamazoe, Kosuke;Higaki, Yuji;Harada, Yoshihisa
聚电解质附近存在的水表现出独特的结构特性，在化学、生物学和地球科学中发挥着关键作用。在这项研究中，采用X射线吸收和发射光谱来观察带电聚电解质刷中限制的水的局部氢键结构。即使在室温下，限制在聚电解质刷中的大多数水分子也表现出一种氢键构型：一种稍微扭曲但有序的构型。这项研究的结果为生理条件下生物材料界面水的功能和局部结构之间的相关性提供了新的见解。
Water existing in the vicinity of polyelectrolytes exhibits unique structural properties, which demonstrate key roles in chemistry, biology, and geoscience. In this study, X-ray absorption and emission spectroscopy was employed to observe the local hydrogen-bonding structure of water confined in a charged polyelectrolyte brush. Even at room temperature, a majority of the water molecules confined in the polyelectrolyte brush exhibited one type of hydrogen-bonding configuration: a slightly distorted, albeit ordered, configuration. The findings from this study provide new insight in terms of the correlation between the function and local structure of water at the interface of biological materials under physiological conditions.