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Updated: Aug 23, 2025
06:55
Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
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Modulation of Diffusion Mechanism and Its Correlation with Complexation in Aqueous Deep Eutectic Solvents.
H Srinivasan1,2, V K Sharma1,2, S Mitra1,2
1Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai400085, India.
The Journal of Physical Chemistry. B
|October 31, 2022
Summary
Adding water to deep eutectic solvents (DESs) significantly enhances acetamide
Area of Science:
- Physical Chemistry
- Materials Science
Background:
- Deep eutectic solvents (DESs) are tunable solvents with extensive hydrogen bonding.
- The microscopic effects of water on DES dynamics are not fully understood.
- Water can act as a disruptor, altering DES structure and dynamics.
Purpose of the Study:
- Investigate the role of water in acetamide diffusion within aqueous DES mixtures.
- Elucidate how water concentration affects molecular relaxation and solvation.
Main Methods:
- Molecular dynamics (MD) simulations.
- Quasielastic neutron scattering (QENS) experiments.
Main Results:
- Jump diffusion of acetamide increases by a factor of 10 with increased water content.
- Localized diffusion of acetamide accelerates and becomes more heterogeneous with water.
- Lithium ion hydration increases, and hydrogen bond/complex lifetimes decrease with water addition.
Conclusions:
- Water concentration is a key factor controlling diffusion and structural relaxation in DESs.
- Water acts as a tunable agent to probe microscopic dynamics and complexation in DESs.
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