X-Ray scattering and physicochemical studies of trialkylamine/carboxylic acid mixtures: nanoscale structure in pseudoprotic ionic liquids and related solutions,Physical Chemistry Chemical Physics

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X-Ray scattering and physicochemical studies of trialkylamine/carboxylic acid mixtures: nanoscale structure in pseudoprotic ionic liquids and related solutions
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2018-06-25 00:00:00 , DOI: 10.1039/c8cp02854k
Mark N. Kobrak _{1,

1,

2,

3,

4} , Kevin G. Yager _{4,

5,

6,

7}

Affiliation

We report the results of X-ray scattering, physical, and spectroscopic measurements on a series of water-saturated trialkylamine/carboxylic acid mixtures. The results demonstrate the existence of well-defined nanoscale structures in bulk liquid mixtures at specific acid : amine ratios. These structures are analogous to those observed in ionic liquids but are driven by the formation of a hydrogen-bonded network rather than via inter-ion Coulomb forces. The results of the physical components of this study are closely analogous to prior observations on anhydrous, low molecular weight acid/amine mixtures, but this is to our knowledge the first time these observations have been augmented by the use of X-ray scattering. The results therefore bridge the gap between early work on amine/acid mixtures and recent studies of protic and pseudoprotic ionic liquids.

中文翻译：

三烷基胺/羧酸混合物的X射线散射和理化研究：伪质子离子液体和相关溶液中的纳米级结构

我们报告了一系列水饱和的三烷基胺/羧酸混合物的X射线散射，物理和光谱测量结果。结果表明，在特定的酸：胺比下，散装液体混合物中存在明确定义的纳米级结构。这些结构类似于在离子液体中观察到的结构，但受氢键网络形成的驱动，而不是通过离子库仑力。这项研究的物理成分的结果与先前对无水，低分子量酸/胺混合物的观察结果非常相似，但这是我们所知，这是第一次通过使用X射线散射来增强这些观察结果。因此，结果弥合了胺/酸混合物早期研究与质子和假质子离子液体最新研究之间的差距。

更新日期：2018-06-25

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