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The role of hydrogen bonding in water-mediated glucose solubility in ionic liquids
학술지 J. of Molecular Liquids, 166, 25-30(2012)
저자명 Ho Shin Kim, Rakhee Pani, Sung Ho Ha, Yoon-Mo Koo, Yaroslava G. Yingling
The restriction of low solubility of glucose in ionic liquids (IL) can be overcome by mixing an aqueous glucose
solution into ILs. In this paper, the change in molecular interactions between glucoses in [Emim][TfO] system
as a result of the presence of water molecules was explored using all-atoms molecular dynamics simulations.
The water molecules initially located around glucose molecule are rapidly uptaken by anions and most of the
water shell around glucose is replaced by anions. The presence of monodispersed water at low concentration
leads to the increased mobility of the system components and higher solubility of glucose in water-mediated
[Emim][TfO] than that in [Emim][TfO]. Our simulations show that water acts as a solubility enhancer which
disrupts glucose.glucose interaction and enhances glucose.solvent (water and [TfO].) interaction, resulting
in higher glucose solubility. Hydrogen bonding network between glucose, water and [TfO]. molecules is a
key driving force in the dissolution process of glucose in water-mediated ILs.
이전글 Recovery of ionic liquid and sugars from hydrolyzed biomass using ion exclusion simulated moving bed chromatography
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