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Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
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Self-Assembled Gels Formed in Deep Eutectic Solvents: Supramolecular Eutectogels with High Ionic Conductivity.
Jorge Ruiz-Olles1, Petr Slavik1, Nicole K Whitelaw1
1Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
Angewandte Chemie (International Ed. in English)
|January 26, 2019
Summary
1,3:2,4-Dibenzylidene-d-sorbitol (DBS) self-assembles into supramolecular gels in deep eutectic solvents (DESs). These DBS-based gels maintain the DES properties and exhibit ionic conductivity suitable for various applications.
Area of Science:
- Supramolecular chemistry
- Materials science
- Green chemistry
Background:
- 1,3:2,4-Dibenzylidene-d-sorbitol (DBS) is a commercially available compound.
- Deep eutectic solvents (DESs) are gaining attention as sustainable solvent systems.
- Developing novel supramolecular gels with tunable properties is an active research area.
Purpose of the Study:
- To investigate the gelation of DBS in DESs.
- To characterize the self-assembled structures and properties of DBS-based gels.
- To evaluate the potential applications of these supramolecular gels.
Main Methods:
- Gelation studies of DBS in choline chloride-based DESs.
- Rheological measurements to confirm gel properties.
- Electron microscopy and X-ray diffraction for structural analysis.
- Differential scanning calorimetry (DSC) to assess thermal properties.
- Ionic conductivity measurements.
Main Results:
- DBS successfully formed supramolecular gels at 5% w/v loading in DESs.
- Nanofibrillar DBS networks were identified as the gelator structures.
- The gels retained the deep eutectic characteristics and ionic conductivity of the base DES.
- Gelation was tolerant to ionic additives (Li+, Mg2+, Ca2+), with maintained conductivity.
Conclusions:
- DBS is an effective low-molecular-weight gelator for forming supramolecular gels in DESs.
- These DBS-based DES gels offer a cost-effective and tunable platform for applications requiring ionic conductivity.
- The study demonstrates the potential of combining DBS with DESs for advanced material development.
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