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Segregation of Inorganic Ions at Surfaces of Polar Nonaqueous Liquids
Author(s) -
Cwiklik Lukasz,
Andersson Gunther,
Dang Liem X.,
Jungwirth Pavel
Publication year - 2007
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200700039
Subject(s) - formamide , solvation , chemistry , polar , aqueous solution , iodide , ethylene glycol , polarizability , inorganic chemistry , ion , surface tension , methanol , organic chemistry , molecule , thermodynamics , physics , astronomy
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.