Journal
MOLECULES
Volume 27, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/molecules27134198
Keywords
DESs; polarity; hydrophobicity; contact angle; solvatochromism; materials characterization
Funding
- National Science Centre, Warsaw, Poland [UMO-2018/30/E/ST8/00642]
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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. The research demonstrates the high accuracy and precision of the developed procedure, and the simplicity of the examination allows for its implementation in routine investigations of DESs.
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 E-T(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.
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