Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance

Yasmeen M AlZahrani; Melanie M Britton

doi:10.1039/d1cp03204f

Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by ¹H nuclear magnetic resonance

Yasmeen M AlZahrani, Melanie M Britton

Chemistry

Research output: Contribution to journal › Article › peer-review

126 Downloads (Pure)

Abstract

A range of ethaline and reline deep eutectic solvents (DESs) have been investigated in the absence and presence of Zn (0-0.3 M) and water (0-29 wt%) by one-dimensional ¹H NMR spectroscopy, two-dimensional ¹H-¹H nuclear Overhauser effect and exchange spectroscopy, ¹H T₁ NMR relaxation times and ¹H NMR diffusion. The role of zinc and water in controlling solvation and microstructure in reline and ethaline were investigated. We show that in ethaline there is proton exchange between hydroxyl groups in ethaline glycol and choline chloride. The rate of exchange between these protons is found to significantly increase in the presence of Zn, but decreases with increasing water content. In the case of reline, no proton exchange is observed between the amide protons in urea and hydroxyl protons in choline chloride. However, the addition of water decreases the viscosity of the system, as well as changes the distance between amide and hydroxyl protons in urea and choline chloride, respectively. The addition of Zn does not appear to change the interactions between urea and choline chloride species, but does reduce the rate of exchange between water and hydroxyl protons in reline formulations containing water.

Original language	English
Pages (from-to)	21913-21922
Number of pages	10
Journal	Physical Chemistry Chemical Physics
Volume	23
Issue number	38
Early online date	17 Sept 2021
DOIs	https://doi.org/10.1039/d1cp03204f
Publication status	E-pub ahead of print - 17 Sept 2021

Bibliographical note

Funding Information:
The authors thank the University of Birmingham and EPSRC (grant EP/K039245/1) for financial support. YAZ thanks the Saudi Arabian Ministry of Higher Education and the chemistry department in Imam Abdulrahman Bin Faisal University for their financial support.

Publisher Copyright:
© the Owner Societies.

Keywords

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1039/d1cp03204fLicence: Creative Commons: Attribution (CC BY)

AlZahraniY2021ProbingFinal published version, 2.88 MBLicence: Creative Commons: Attribution (CC BY)

Chemistry at Birmingham: a Response to the EPSRC Call: Core Capability for Chemistry Research
Simpkins, N., Anderson, P., Britton, M., Bunch, J., Preece, J. & Slater, P.
Engineering & Physical Science Research Council
1/01/13 → 31/03/13
Project: Research

Research data supporting publication "Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance"
Alzahrani, Y. (Creator) & Britton, M. (Creator), University of Birmingham, 23 Sept 2021
DOI: https://doi.org/10.25500/edata.bham.00000719
Dataset

Cite this

@article{3cafe0115c654008b84ab88e6be87a03,

title = "Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance",

abstract = "A range of ethaline and reline deep eutectic solvents (DESs) have been investigated in the absence and presence of Zn (0-0.3 M) and water (0-29 wt%) by one-dimensional 1H NMR spectroscopy, two-dimensional 1H-1H nuclear Overhauser effect and exchange spectroscopy, 1H T1 NMR relaxation times and 1H NMR diffusion. The role of zinc and water in controlling solvation and microstructure in reline and ethaline were investigated. We show that in ethaline there is proton exchange between hydroxyl groups in ethaline glycol and choline chloride. The rate of exchange between these protons is found to significantly increase in the presence of Zn, but decreases with increasing water content. In the case of reline, no proton exchange is observed between the amide protons in urea and hydroxyl protons in choline chloride. However, the addition of water decreases the viscosity of the system, as well as changes the distance between amide and hydroxyl protons in urea and choline chloride, respectively. The addition of Zn does not appear to change the interactions between urea and choline chloride species, but does reduce the rate of exchange between water and hydroxyl protons in reline formulations containing water.",

keywords = "General Physics and Astronomy, Physical and Theoretical Chemistry",

author = "AlZahrani, {Yasmeen M} and Britton, {Melanie M}",

note = "Funding Information: The authors thank the University of Birmingham and EPSRC (grant EP/K039245/1) for financial support. YAZ thanks the Saudi Arabian Ministry of Higher Education and the chemistry department in Imam Abdulrahman Bin Faisal University for their financial support. Publisher Copyright: {\textcopyright} the Owner Societies.",

year = "2021",

month = sep,

day = "17",

doi = "10.1039/d1cp03204f",

language = "English",

volume = "23",

pages = "21913--21922",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "38",

}

TY - JOUR

T1 - Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance

AU - AlZahrani, Yasmeen M

AU - Britton, Melanie M

N1 - Funding Information: The authors thank the University of Birmingham and EPSRC (grant EP/K039245/1) for financial support. YAZ thanks the Saudi Arabian Ministry of Higher Education and the chemistry department in Imam Abdulrahman Bin Faisal University for their financial support. Publisher Copyright: © the Owner Societies.

PY - 2021/9/17

Y1 - 2021/9/17

N2 - A range of ethaline and reline deep eutectic solvents (DESs) have been investigated in the absence and presence of Zn (0-0.3 M) and water (0-29 wt%) by one-dimensional 1H NMR spectroscopy, two-dimensional 1H-1H nuclear Overhauser effect and exchange spectroscopy, 1H T1 NMR relaxation times and 1H NMR diffusion. The role of zinc and water in controlling solvation and microstructure in reline and ethaline were investigated. We show that in ethaline there is proton exchange between hydroxyl groups in ethaline glycol and choline chloride. The rate of exchange between these protons is found to significantly increase in the presence of Zn, but decreases with increasing water content. In the case of reline, no proton exchange is observed between the amide protons in urea and hydroxyl protons in choline chloride. However, the addition of water decreases the viscosity of the system, as well as changes the distance between amide and hydroxyl protons in urea and choline chloride, respectively. The addition of Zn does not appear to change the interactions between urea and choline chloride species, but does reduce the rate of exchange between water and hydroxyl protons in reline formulations containing water.

AB - A range of ethaline and reline deep eutectic solvents (DESs) have been investigated in the absence and presence of Zn (0-0.3 M) and water (0-29 wt%) by one-dimensional 1H NMR spectroscopy, two-dimensional 1H-1H nuclear Overhauser effect and exchange spectroscopy, 1H T1 NMR relaxation times and 1H NMR diffusion. The role of zinc and water in controlling solvation and microstructure in reline and ethaline were investigated. We show that in ethaline there is proton exchange between hydroxyl groups in ethaline glycol and choline chloride. The rate of exchange between these protons is found to significantly increase in the presence of Zn, but decreases with increasing water content. In the case of reline, no proton exchange is observed between the amide protons in urea and hydroxyl protons in choline chloride. However, the addition of water decreases the viscosity of the system, as well as changes the distance between amide and hydroxyl protons in urea and choline chloride, respectively. The addition of Zn does not appear to change the interactions between urea and choline chloride species, but does reduce the rate of exchange between water and hydroxyl protons in reline formulations containing water.

KW - General Physics and Astronomy

KW - Physical and Theoretical Chemistry

U2 - 10.1039/d1cp03204f

DO - 10.1039/d1cp03204f

M3 - Article

C2 - 34559172

SN - 1463-9076

VL - 23

SP - 21913

EP - 21922

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 38

ER -

Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Projects

Chemistry at Birmingham: a Response to the EPSRC Call: Core Capability for Chemistry Research

Datasets

Research data supporting publication "Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by 1H nuclear magnetic resonance"

Cite this

Probing the influence of Zn and water on solvation and dynamics in ethaline and reline deep eutectic solvents by ¹H nuclear magnetic resonance