Hydrogen bonding of nanoconfined water and lyotropic ionic liquid crystal in 1-decyl-3-methylimidazolium nitrate–water solutions

[Display omitted] The hydrogen bonding of nanoconfined water (water pockets) and ionic liquid crystals (ILCs) was examined in a hydrophilic IL–D2O system by Raman spectroscopy. The IL was 1-decyl-3-methylimidazolium nitrate ([C10mim][NO3]). The lyotropic ILC of [C10mim][NO3]-70–90 mol% D2O was obtai...

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Bibliographic Details
Published in:Chemical physics 2024-08, Vol.584, p.112343, Article 112343
Main Authors: Abe, Hiroshi, Maruyama, Shusei, Nemoto, Fumiya, Kishimura, Hiroaki
Format: Article
Language:English
Subjects:
Hydration shells
Ionic liquid
Lyotropic mesophase
Nearly-free hydrogen bonding
Very strong hydrogen bonding
Water pocket
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Summary:[Display omitted] The hydrogen bonding of nanoconfined water (water pockets) and ionic liquid crystals (ILCs) was examined in a hydrophilic IL–D2O system by Raman spectroscopy. The IL was 1-decyl-3-methylimidazolium nitrate ([C10mim][NO3]). The lyotropic ILC of [C10mim][NO3]-70–90 mol% D2O was obtained at room temperature. The hydrogen bonding states of the water pocket and lyotropic ILC phases were represented by additional nearly-free and very strong hydrogen bondings. H/D exchange occurred at room temperature in [C10mim][NO3]–D2O, promoted by the gel-inherent hydrogen bonding of water.
ISSN:0301-0104
DOI:10.1016/j.chemphys.2024.112343