Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, 86135 Augsburg, Germany.
Phys Chem Chem Phys. 2019 Mar 27;21(13):6801-6809. doi: 10.1039/c9cp00742c.
We have performed a thorough examination of the reorientational relaxation dynamics and the ionic charge transport of three typical deep eutectic solvents, ethaline, glyceline and reline, by using broadband dielectric spectroscopy. Our experiments cover a broad temperature range from the low-viscosity liquid down to the deeply supercooled state, allowing us to investigate the significant influence of glassy freezing on the ionic charge transport in these systems. In addition, we provide evidence for a close coupling of the ionic conductivity in these materials to reorientational dipolar motions, which should be considered when searching for deep eutectic solvents optimized for electrochemical applications.
我们使用宽带介电谱对三种典型的深共晶溶剂，即乙腈、甘油和丙腈的重定向弛豫动力学和离子电荷输运进行了全面研究。我们的实验涵盖了从低粘度液体到深度过冷状态的宽温度范围，使我们能够研究玻璃态冻结对这些体系中离子电荷输运的显著影响。此外，我们还提供了这些材料中离子电导率与重定向偶极子运动密切耦合的证据，在寻找优化用于电化学应用的深共晶溶剂时应考虑这一点。
