Cichocki Łukasz, Warmińska Dorota, Łuczak Justyna, Przyjazny Andrzej, Boczkaj Grzegorz
Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233 Gdansk, Poland.
Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233 Gdansk, Poland.
Molecules. 2022 Jun 29;27(13):4198. doi: 10.3390/molecules27134198.
The paper presents a new method for evaluating the polarity and hydrophobicity of deep eutectic solvents (DESs) based on the measurement of the DES contact angle on glass. DESs consisting of benzoic acid derivatives and quaternary ammonium chlorides-tetrabutylammonium chloride (TBAC) and benzyldimethylhexadecylammonium chloride (16-BAC)-in selected molar ratios were chosen for the study. To investigate the DESs polarity, an optical goniometer and an ET(30) solvatochromic scale based on Reichardt's dye were used. The research demonstrated the high accuracy and precision of the developed procedure. The simplicity of the examination and the availability of basic equipment allow for the implementation of the developed method in routine investigations of DESs.
本文提出了一种基于测量深共熔溶剂(DESs)在玻璃上的接触角来评估其极性和疏水性的新方法。本研究选用了由苯甲酸衍生物与季铵氯化物——四丁基氯化铵(TBAC)和苄基二甲基十六烷基氯化铵(16 - BAC)按选定摩尔比组成的DESs。为了研究DESs的极性,使用了光学测角仪和基于赖夏德特染料的ET(30)溶剂化显色标度。研究表明所开发程序具有高准确性和精密度。检测的简便性以及基础设备的可得性使得所开发的方法能够应用于DESs的常规研究中。