01604nas a2200169   4500008004100000022001400041245009300055210006900148260000800217300001100225490000800236520100800244100002301252700002101275700001801296856012001314       2023                        eng d  a0021-960600aDoes variation in composition affect dynamics when approaching the eutectic composition?0 aDoes variation in composition affect dynamics when approaching t  cMAR  a1142030 v1583 a<p>
	Deep eutectic solvent is a mixture of two or more components, mixed in a certain molar ratio, such that the mixture melts at a temperature lower than individual substances. In this work, we have used a combination of ultrafast vibrational spectroscopy and molecular dynamics simulations to investigate the microscopic structure and dynamics of a deep eutectic solvent (1:2 choline chloride: ethylene glycol) at and around the eutectic composition. In particular, we have compared the spectral diffusion and orientational relaxation dynamics of these systems with varying compositions. Our results show that although the time-averaged solvent structures around a dissolved solute are comparable across compositions, both the solvent fluctuations and solute reorientation dynamics show distinct differences. We show that these subtle changes in solute and solvent dynamics with changing compositions arise from the variations in the fluctuations of the different intercomponent hydrogen bonds.</p>
1 aChatterjee, Srijan1 aChowdhury, Tubai1 aBagchi, Sayan  uhttps://library.ncl.res.in/content/does-variation-composition-affect-dynamics-when-approaching-eutectic-composition