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Issue 2, 2012
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Novel choline-chloride-based deep-eutectic-solvents with renewable hydrogen bond donors: levulinic acid and sugar-based polyols

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Abstract

Choline chloride (ChCl) has been combined with renewable hydrogen bond donors (HBD) to form novel deep eutectic solvents (DES) with melting points lower than 100 °C. In some cases (e.g. sorbitol or isosorbide as HBDs) chiral DES can be easily produced. Moreover, the addition of glycerol decreases the viscosity of DES significantly. In the ChCl : levulinic acid DES case, singular properties were observed. Thus, equimolecular mixtures of ChCl : levulinic acid (1 : 1) formed a crystal at room temperature, rapidly melting in contact with air humidity. Addition of excess of acetone to ChCl : levulinic acid (1 : 2) leads to the almost quantitative precipitation of choline chloride, which can be used again to form a DES.

Graphical abstract: Novel choline-chloride-based deep-eutectic-solvents with renewable hydrogen bond donors: levulinic acid and sugar-based polyols

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Publication details

The article was received on 23 Aug 2011, accepted on 26 Oct 2011 and first published on 18 Nov 2011


Article type: Communication
DOI: 10.1039/C1RA00630D
Citation: RSC Adv., 2012,2, 421-425
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    Novel choline-chloride-based deep-eutectic-solvents with renewable hydrogen bond donors: levulinic acid and sugar-based polyols

    Z. Maugeri and P. Domínguez de María, RSC Adv., 2012, 2, 421
    DOI: 10.1039/C1RA00630D

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