Tetrabutylammonium bromide (TBABr)-based deep eutectic solvents (DESs) and their physical properties

• Published in: Molecules (Basel, Switzerland) Vol. 19; no. 6; pp. 8011 - 8026
• Main Authors: Yusof, Rizana, Abdulmalek, Emilia, Sirat, Kamaliah, Rahman, Mohd Basyaruddin Abdul
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 13-06-2014; MDPI
• Subjects: deep eutectic solvent; density; Glycerol; Hydrogen bonds; ionic conductivity; Physical properties; Quaternary Ammonium Compounds - chemistry; Solvents; Solvents - chemistry; Temperature; tetrabutylammonium bromide; Viscosity; Selangor Malaysia; Malaysia
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules19068011

Density, viscosity and ionic conductivity data sets of deep eutectic solvents (DESs) formed by tetrabutylammonium bromide (TBABr) paired with ethlyene glycol, 1,3-propanediol, 1,5-pentanediol and glycerol hydrogen bond donors (HBDs) are reported. The properties of DES were measured at temperatures between 303 K and 333 K for HBD percentages of 66.7% to 90%. The effects of HBDs under different temperature and percentages are systematically analyzed. As expected, the measured density and viscosity of the studied DESs decreased with an increase in temperature, while ionic conductivity increases with temperature. In general, DESs made of TBABr and glycerol showed the highest density and viscosity and the lowest ionic conductivity when compared to other DESs. The presence of an extra hydroxyl group on glycerol in a DES affected the properties of the DES.