Segregation of inorganic ions at surfaces of polar nonaqueous liquids.
We present a short review of recent computational and experimental studies on surfaces of solutions of inorganic salts in polar nonaqueous solvents. These investigations complement our knowledge of aqueous interfaces and show that liquids such as formamide, liquid ammonia, and ethylene glycol can also surface-segregate large polarizable anions like iodide, albeit less efficiently than water. For liquids whose surfaces are covered with hydrophobic groups (e.g. methanol), the surface-ion effect all but disappears. Based on the present data a general picture of inorganic-ion solvation at the solution-vapor interface of polar liquids is outlined.
Cwiklik
Lukasz
L
Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Biomolecules and Complex Molecular Systems, Flemingovo nám. 2, 16610 Prague 6, Czech Republic.
Andersson
Gunther
G
Dang
Liem X
LX
Jungwirth
Pavel
P
D000641:Ammonia; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005559:Formamides; D005990:Glycerol; D006858:Hydrofluoric Acid; D057927:Hydrophobic and Hydrophilic Interactions; D007287:Inorganic Chemicals / Q000737:chemistry*; D007477:Ions / Q000737:chemistry*; D000432:Methanol; D012492:Salts / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
D005559:Formamides; D007287:Inorganic Chemicals; D007477:Ions; D012492:Salts; D012997:Solvents; C031066:formamide; D000641:Ammonia; D005990:Glycerol; D006858:Hydrofluoric Acid; D000432:Methanol