水在高电荷接口附近的键结构不像冰
Satoshi Nihonyanagi1, Shoichi Yamaguchi, Tahei Tahara
1Molecular Spectroscopy Laboratory, Advanced Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Journal of the American Chemical Society
|May 1, 2010
概括
在界面上重水 (HOD) 的想象中的chi(2) 光谱与散装液体HOD相似,而不是冰. 这表明,充电接口的键类似于散装水结构.
科学领域:
- 物理化学 物理化学
- 接口科学 接口科学
- 频谱学是一种光谱学.
背景情况:
- 了解界面上的分子结构对于化学过程至关重要.
- 充电接口,如那些具有表面活性剂的接口,显著影响分子组织.
- 之前的研究表明,充电接口具有独特的,潜在的"冰状"结构.
研究的目的:
- 在充电接口上研究重水 (HOD) 的键结构.
- 为了比较接口HOD结构与散装液体HOD和冰.
- 为了确定充电接口是否会诱导"类似冰的"水结构.
主要方法:
- 利用虚拟的chi(2) 光谱来探测界面分子结构.
- 在空气/充电表面活性剂/水性界面上分析了HOD的光谱特征.
- 获得的光谱与大量液体HOD和冰的红外光谱进行了比较.
主要成果:
- 界面HOD的虚拟chi(2) 光谱与散装液体HOD的红外光谱非常接近.
- 没有观察到"类似冰的"键安排的光谱证据.
- 这些发现表明,充电接口具有明显的结构行为.
结论:
- 在高电荷接口的键结构不是"冰样".
- 充电表面活性剂接口的界面水结构与散装液态水的界面水结构非常相似.
- 这项研究阐明了充电液体接口中的分子组织.
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