02097nas a2200229   4500008004100000022001400041245015800055210006900213260000800282300001400290490000800304520125600312100002301568700001901591700001801610700001601628700002301644700002701667700002401694700001801718856013101736       2019                        eng d  a1520-610600aHydrocarbon chain-length dependence of solvation dynamics in alcohol-based deep eutectic solvents: a two-dimensional infrared spectroscopic investigation0 aHydrocarbon chainlength dependence of solvation dynamics in alco  cNOV  a9355-93630 v1233 a<p>Deep eutectic solvents (DESs) have gained popularity in recent years as an environmentally benign, inexpensive alternative to organic solvents for diverse applications in chemistry and biology. Among them, alcohol-based DESs serve as useful media in various applications due to their significantly low viscosity as compared to other DESs. Despite their importance as media, little is known how their solvation dynamics change as a function of the hydrocarbon chain length of the alcohol constituent. In order to obtain insights into the chain-length dependence of the solvation dynamics, we have performed two-dimensional infrared spectroscopy on three alcohol-based DESs by systematically varying the hydrocarbon chain length. The results reveal that the solvent dynamics slows down monotonically with an increase in the chain length. This increase in the dynamic timescales also shows a strong correlation with the concomitant increase in the viscosity of DESs. In addition, we have performed molecular dynamics simulations to compare with the experimental results, thereby testing the capacity of simulations to determine the amplitudes and timescales of the structural fluctuations on fast timescales under thermal equilibrium conditions.</p>
1 aChatterjee, Srijan1 aGhosh, Deborin1 aHaldar, Tapas1 aDeb, Pranab1 aSakpal, Sushil, S.1 aDeshmukh, Samadhan, H.1 aKashid, Somnath, M.1 aBagchi, Sayan  uhttps://library.ncl.res.in/content/hydrocarbon-chain-length-dependence-solvation-dynamics-alcohol-based-deep-eutectic-solvents