Dynamics of a PEG based non-ionic deep eutectic solvent: Temperature dependence

Translational and reorientational dynamics in deep eutectic solvents

“…Nevertheless, only few dielectric investigations of DESs were reported until now. 11,12,15,16,17,18,19 Interestingly, a recent dielectric study of three DESs, performed by some of the present authors, 12 revealed a close correlation of their reorientational dynamics with the ionic dc conductivity for two systems (glyceline and ethaline) while some minor but significant deviations showed up for the third material (reline). Moreover, the temperature dependence of both the rotational and ionic dynamics in these systems were found to exhibit the characteristics of glassy freezing.…”

“…Nevertheless, only a few dielectric investigations of DESs were reported until now. 12,13,[16][17][18][19][20] Interestingly, a recent dielectric study of three DESs, performed by some of the present authors, 13…”

Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste

“…Moreover, for materials of an ionic nature, dielectric spectroscopy is an effective method by which to understand the mechanisms related to charge transport [152]. Despite many studies on ILs, only a few studies on the dielectric properties of DESs have been performed [152,153,154,155,156,157,158,159]. For example, Griffin et al [159] utilized broadband dielectric spectroscopy in combination with depolarized dynamic light scattering to explore the charge transport and structural dynamics of a deep eutectic mixture, {Lidocaine:2Decanoic acid}.…”

“…Not only ionic DESs, but non-ionic DESs were also studied to explore their dielectric properties. Mukherjee et al [155] performed dielectric relaxation spectroscopy and time-resolved fluorescence to study a polyethylene-glycol-based DES. For this DES, the obtained static dielectric constant was large, even greater than that of many polar solvents.…”

Are water-xylitol mixtures heterogeneous? An investigation employing composition and temperature dependent dielectric relaxation and time-resolved fluorescence measurements

“…In this work, measurements have been carried out for water-xylitol mixtures in various concentrations (2.31 mol% to 9.62 mol%) of xylitol. DRS technique has already been used to understand the dynamics of pure solvents, [34][35][36][37] water-alcohol mixtures, 13,38 deep eutectic solvents (DESs) 39,40 and other media. TRF measurements of non-reactive solution dynamics and DR is intimately related, and a combination of them has been employed to explore dynamics and interaction in many different systems.…”