The Effect of Water upon Deep Eutectic Solvent Nanostructure : An Unusual Transition from Ionic Mixture to Aqueous Solution
(2017) In Angewandte Chemie - International Edition 56(33). p.9782-9785- Abstract
The nanostructure of a series of choline chloride/urea/water deep eutectic solvent mixtures was characterized across a wide hydration range by neutron total scattering and empirical potential structure refinement (EPSR). As the structure is significantly altered, even at low hydration levels, reporting the DES water content is important. However, the DES nanostructure is retained to a remarkably high level of water (ca. 42 wt % H2O) because of solvophobic sequestration of water into nanostructured domains around cholinium cations. At 51 wt %/83 mol % H2O, this segregation becomes unfavorable, and the DES structure is disrupted; instead, water–water and DES–water interactions dominate. At and above this hydration... (More)
The nanostructure of a series of choline chloride/urea/water deep eutectic solvent mixtures was characterized across a wide hydration range by neutron total scattering and empirical potential structure refinement (EPSR). As the structure is significantly altered, even at low hydration levels, reporting the DES water content is important. However, the DES nanostructure is retained to a remarkably high level of water (ca. 42 wt % H2O) because of solvophobic sequestration of water into nanostructured domains around cholinium cations. At 51 wt %/83 mol % H2O, this segregation becomes unfavorable, and the DES structure is disrupted; instead, water–water and DES–water interactions dominate. At and above this hydration level, the DES–water mixture is best described as an aqueous solution of DES components.
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- author
- Hammond, Oliver S. ; Bowron, Daniel T. and Edler, Karen J. LU
- publishing date
- 2017-08-07
- type
- Contribution to journal
- publication status
- published
- keywords
- deep eutectic solvents, ionic liquids, nanostructures, neutron diffraction, sustainable chemistry
- in
- Angewandte Chemie - International Edition
- volume
- 56
- issue
- 33
- pages
- 4 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:28480595
- scopus:85026746254
- ISSN
- 1433-7851
- DOI
- 10.1002/anie.201702486
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
- id
- 8afaa1d5-9b67-474f-b142-7943a4190705
- date added to LUP
- 2023-01-18 09:14:48
- date last changed
- 2024-06-28 21:22:48
@article{8afaa1d5-9b67-474f-b142-7943a4190705, abstract = {{<p>The nanostructure of a series of choline chloride/urea/water deep eutectic solvent mixtures was characterized across a wide hydration range by neutron total scattering and empirical potential structure refinement (EPSR). As the structure is significantly altered, even at low hydration levels, reporting the DES water content is important. However, the DES nanostructure is retained to a remarkably high level of water (ca. 42 wt % H<sub>2</sub>O) because of solvophobic sequestration of water into nanostructured domains around cholinium cations. At 51 wt %/83 mol % H<sub>2</sub>O, this segregation becomes unfavorable, and the DES structure is disrupted; instead, water–water and DES–water interactions dominate. At and above this hydration level, the DES–water mixture is best described as an aqueous solution of DES components.</p>}}, author = {{Hammond, Oliver S. and Bowron, Daniel T. and Edler, Karen J.}}, issn = {{1433-7851}}, keywords = {{deep eutectic solvents; ionic liquids; nanostructures; neutron diffraction; sustainable chemistry}}, language = {{eng}}, month = {{08}}, number = {{33}}, pages = {{9782--9785}}, publisher = {{John Wiley & Sons Inc.}}, series = {{Angewandte Chemie - International Edition}}, title = {{The Effect of Water upon Deep Eutectic Solvent Nanostructure : An Unusual Transition from Ionic Mixture to Aqueous Solution}}, url = {{http://dx.doi.org/10.1002/anie.201702486}}, doi = {{10.1002/anie.201702486}}, volume = {{56}}, year = {{2017}}, }