Insights from Femtosecond Transient Absorption Spectroscopy into the Structure-Function Relationship of Glyceline Deep Eutectic Solvents.

ABSTRACT: This study aimed to determine the structure-function relationship (SFR) for ChCl-glycerol mixtures, a deep eutectic solvent (DES), by investigating their microscopic solvation dynamics and how it relates to their macroscopic properties across varying concentrations of ChCl. Femtosecond transient absorption (fs-TA) spectroscopy revealed two distinct solvation dynamics time constants: τ₁, governed by glycerol-glycerol interactions, and τ₂, dominated by the choline response. The τ₂ minimum at 25-30 mol % ChCl closely aligned with the eutectic composition (~33.33 mol % ChCl), where the glycerol network was the most organized and the choline ions exhibited the fastest relaxation. The viscosity decreased sharply up to ~25 mol % ChCl and then

SUBMITTER: Pandian R 

PROVIDER: S-EPMC11901628 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature