Phenolic hydrogen bond donors in the formation of non-ionic deep eutectic solvents: the quest for type V DES
Author(s) -
Dinis O. Abranches,
Mónia A. R. Martins,
Liliana P. Silva,
Nicolas Schaeffer,
Simão P. Pinho,
João A. P. Coutinho
Publication year - 2019
Publication title -
chemical communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.837
H-Index - 333
eISSN - 1364-548X
pISSN - 1359-7345
DOI - 10.1039/c9cc04846d
Subject(s) - chemistry , ionic bonding , thymol , eutectic system , hydrogen bond , ionic compound , ionic liquid , inorganic chemistry , medicinal chemistry , organic chemistry , polymer chemistry , ion , molecule , chromatography , alloy , essential oil , catalysis
Mixtures of non-ionic compounds have been reported as DES but most are just ideal mixtures. In the thymol-menthol system, an abnormal strong interaction was identified stemming from the acidity difference of the phenolic and aliphatic hydroxyl groups. This type of interaction is found to be the key to prepare non-ionic DES, that may be classified as type V.
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