TY - JOUR
T1 - Solubility of small molecule in ionic liquids
T2 - A model study on the ionic size effect
AU - Lou, Ping
AU - Kang, Sunwoo
AU - Ko, Kyung Cheol
AU - Lee, Jin Yong
PY - 2007/11/15
Y1 - 2007/11/15
N2 - Recently, the solvent power of ionic liquid (IL) has been described based on Flory-Huggins (FH) theory assuming that the volumes of the components are the same (J. Phys. Chem. B, 2006, 110, 16205). Here, we extended the FH theory to derive the solvent power in the case of different sizes (molar volumes) of the IL's components based on "polymer-like" model. Applying this model, the effect of ionic size on the solvent power of ionic liquids has been investigated. It was found that the effect of size can be characterized by introducing the effective volume (V̄+ and V̄-) of each site of the ion, and for the equivalent ionic liquid, the larger effective volume of the ionic liquid has the larger solvent power. Our results are in excellent agreement with the experimental solubility data in various ionic liquids.
AB - Recently, the solvent power of ionic liquid (IL) has been described based on Flory-Huggins (FH) theory assuming that the volumes of the components are the same (J. Phys. Chem. B, 2006, 110, 16205). Here, we extended the FH theory to derive the solvent power in the case of different sizes (molar volumes) of the IL's components based on "polymer-like" model. Applying this model, the effect of ionic size on the solvent power of ionic liquids has been investigated. It was found that the effect of size can be characterized by introducing the effective volume (V̄+ and V̄-) of each site of the ion, and for the equivalent ionic liquid, the larger effective volume of the ionic liquid has the larger solvent power. Our results are in excellent agreement with the experimental solubility data in various ionic liquids.
UR - https://www.scopus.com/pages/publications/36649007438
U2 - 10.1021/jp0757311
DO - 10.1021/jp0757311
M3 - Article
AN - SCOPUS:36649007438
SN - 1520-6106
VL - 111
SP - 13047
EP - 13051
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 45
ER -