authors |
Madeira, PP; Passos, H; Gomes, J; Coutinho, JAP; Freire, MG |
nationality |
International |
journal |
PHYSICAL CHEMISTRY CHEMICAL PHYSICS |
keywords |
SOLVATOCHROMIC COMPARISON METHOD; PYRIDINE-N-OXIDE; BIPHASIC SYSTEMS; EXTENDED SCALE; PI-STAR; SOLVENTS; EXTRACTION; PARAMETERS; BEHAVIOR; POLARITY |
abstract |
Although highly relevant to a priori select adequate solvents for a given application, the determination of the hydrogen-bond acidity or proton donor ability of aqueous solutions of ionic liquids is a difficult task due to the poor solubility of the commonly used probes in aqueous media. In this work, we demonstrate the applicability of the pyridine-N-oxide probe to determine the hydrogen-bond acidity of both neat ionic liquids and their aqueous solutions, based on C-13 NMR chemical shifts, and the suitability of these values to appraise the ability of ionic liquids to form aqueous two-phase systems. |
publisher |
ROYAL SOC CHEMISTRY |
issn |
1463-9076 |
year published |
2017 |
volume |
19 |
issue |
18 |
beginning page |
11011 |
ending page |
11016 |
digital object identifier (doi) |
10.1039/c6cp08210f |
web of science category |
Chemistry, Physical; Physics, Atomic, Molecular & Chemical |
subject category |
Chemistry; Physics |
unique article identifier |
WOS:000401022300005
|