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Geometric Matching Principle for Adsorption Selectivity of Ionic Liquids: A Simple Method into the Fascinating World of Shape-Controlled Chemistry

机译:离子液体的吸附选择性的几何匹配原理:迷人的形状控制化学世界的一种简单方法

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摘要

Ionic liquids (ILs) possess effective functions in controlling the phase and morphology of nanomaterials. However, it is still unclear how ILs affect the morphology control and what the origin of adsorption selectivity of ILs is on different crystal facets. It is a challenge to develop a simple method to select the suitable kinds of ILs for achieving the controllable synthesis of nanomaterials with designable shape. Herein, density functional theory (DFT) calculations were combined with experiment to study the interaction mechanism between ILs and crystal facets. An important relationship is proposed, named as the geometric matching principle, in which the adsorption site of substrate should not only need to meet the space requirement for interionic stacking of ILs, but also needs to maximize the interaction between adsorbed ILs and substrate. This new finding is meaningful for prediction of the adsorption selectivity of ILs and clarification of their shape-controlled chemistry.
机译:离子液体(ILs)在控制纳米材料的相和形态方面具有有效的功能。然而,仍不清楚ILs如何影响形态控制以及ILs在不同晶体面上的吸附选择性的起因是什么。开发一种简单的方法来选择合适种类的IL,以实现可设计形状的纳米材料的可控合成是一个挑战。在本文中,将密度泛函理论(DFT)计算与实验相结合,以研究IL与晶面之间的相互作用机理。提出了一种重要的关系,称为几何匹配原理,其中底物的吸附位点不仅需要满足离子液体离子间离子堆叠的空间要求,而且还需要使被吸附的离子液体与底物之间的相互作用最大化。这一新发现对于预测IL的吸附选择性和澄清其形状控制的化学物质具有重要意义。

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