基于多种溶剂化相互作用对离子液体进行表征。

Characterizing ionic liquids on the basis of multiple solvation interactions.

作者信息

Anderson Jared L, Ding Jie, Welton Thomas, Armstrong Daniel W

机构信息

Department of Chemistry, Iowa State University, Ames, IA 50011, USA.

出版信息

J Am Chem Soc. 2002 Nov 27;124(47):14247-54. doi: 10.1021/ja028156h.

DOI:10.1021/ja028156h

PMID:12440924

Abstract

Room-temperature ionic liquids (RTILs) are useful in many chemical applications. Recent publications have attempted to determine the polarity of RTILs using empirical solvent polarity scales. The results have indicated that most RTILs have similar polarities. Nevertheless, RTILs are capable of behaving quite differently when used as solvents in organic synthesis, matrixes in matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, liquid-liquid extraction, and as stationary phases in gas chromatography. The work presented in this study uses a linear free energy approach to characterize 17 RTILs on the basis of their distinct multiple solvation interactions with probe solute molecules. This model provides data that can be used to help identify the interactions and properties that are important for specific chemical applications.

摘要

室温离子液体（RTILs）在许多化学应用中都很有用。最近的出版物试图使用经验性溶剂极性标度来确定RTILs的极性。结果表明，大多数RTILs具有相似的极性。然而，当用作有机合成中的溶剂、基质辅助激光解吸/电离（MALDI）质谱中的基质、液液萃取中的溶剂以及气相色谱中的固定相时，RTILs的行为可能会有很大不同。本研究中提出的工作使用线性自由能方法，根据17种RTILs与探针溶质分子独特的多重溶剂化相互作用来对其进行表征。该模型提供的数据可用于帮助识别对特定化学应用重要的相互作用和性质。