Matteo Boventi, Michele Mauri, Franca Castiglione and Roberto Simonutti
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引用次数: 0
摘要
疏水性非离子（V 型）深共晶溶剂（DES）是最近出现的一类新型可持续材料，在多种应用中显示出独特的性能。本研究通过氙核磁共振波谱对百里酚：樟脑、薄荷醇：百里酚和基于薄荷醇：羧酸的共晶混合物（EMs）进行了实验研究，旨在阐明这些材料的特殊纳米结构。对 129Xe 化学位移和纵向弛豫时间的分析结果表明，DES 的理想度偏差与其结构自由体积之间存在相关性。此外，还研究了 DESs 和 EMs 成分的变化对液体结构的影响。
Exploring the structure of type V deep eutectic solvents by xenon NMR spectroscopy
Hydrophobic non-ionic (type V) deep eutectic solvents (DESs) have recently emerged as a new class of sustainable materials that have shown unique properties in several applications. In this study, type V DESs thymol : camphor, menthol : thymol and eutectic mixtures (EMs) based on menthol : carboxylic acids with variable chain length, are experimentally investigated using xenon NMR spectroscopy, with the aim to clarify the peculiar nanostructure of these materials. The results, obtained from the analysis of the 129Xe chemical shifts and of the longitudinal relaxation times, reveal a correlation between the deviation from ideality of the DESs and their structure free volume. Furthermore, the effect of varying the composition of DESs and EMs on the liquid structure is also studied.
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