Microscopic and Macroscopic Properties of Carbohydrate Solutions in the Ionic Liquid 1-Ethyl-3-methyl-imidazolium Acetate

The Journal of Physical Chemistry. B
Michael E RiesTatiana Budtova

Abstract

Solutions of glucose, cellobiose, and microcrystalline cellulose in the ionic liquid 1-ethyl-3-methyl-imidazolium acetate ([C2mim][OAc]) have been examined using low-field (20 MHz) NMR relaxometry and rheology. The spin-lattice ( T1) and spin-spin ( T2) relaxation times have been determined from 30 to 70 °C inclusive, for a range of concentrations (0-15 wt %) of each carbohydrate in [C2mim][OAc]. The zero shear rate viscosities for the same samples across the same temperature range were studied. The viscosity, NMR relaxometry, and previously published diffusion data were all analyzed together through the Debye-Stokes-Einstein equations. Microscopically, these systems behave as an "ideal mixture" of free ions and ions associated with the carbohydrate molecules. The molar ratio of carbohydrate OH groups to ionic liquid molecules, α, is the key parameter in determining the NMR relaxometry and hence the local microscopic environment of the ions. NMR relaxometry data are found to follow an Arrhenius type behavior, and the difference in rotational activation energy between free and associated ions is determined at 6.2 ± 0.5 kJ/mol.

References

May 2, 2002·Journal of the American Chemical Society·Richard P SwatloskiRobin D Rogers
Apr 30, 2005·Angewandte Chemie·Dieter KlemmAndreas Bohn
Jul 13, 2006·The Journal of Physical Chemistry. a·Jürgen H AntonyPhillip G Wahlbeck
Mar 31, 1995·Science·C A Angell
Jan 17, 2008·Chemical Society Reviews·Natalia V Plechkova, Kenneth R Seddon
May 14, 2010·The Journal of Physical Chemistry. B·Romain SescousseTatiana Budtova
Oct 22, 2010·Journal of Magnetic Resonance·Barbara BlicharskaMagdalena Witek
Jun 18, 2011·The Journal of Physical Chemistry. B·Luísa A NevesJoão G Crespo
Jan 24, 2012·Chemical Society Reviews·Hui WangRobin D Rogers
Mar 30, 2012·Faraday Discussions·C Austen AngellZuofeng Zhao
Oct 2, 2012·The Journal of Physical Chemistry. B·Craig A HallMichael E Ries
Jul 9, 2013·The Journal of Physical Chemistry. B·Yuling ZhaoSuojiang Zhang
Aug 27, 2013·The Journal of Physical Chemistry. B·Carla I DanielPedro J Sebastião
Jul 8, 2014·International Journal of Molecular Sciences·Mehmet IsikDavid Mecerreyes
Jan 8, 2015·The Journal of Physical Chemistry. B·Asanah RadhiTatiana Budtova
Mar 26, 2015·Physical Chemistry Chemical Physics : PCCP·Vivek S BharadwajC Mark Maupin
Aug 8, 2015·The Journal of Physical Chemistry. B·Carla I DanielPedro J Sebastião
Aug 19, 2015·Physical Chemistry Chemical Physics : PCCP·Lingyu JiaYingxiong Wang
Nov 6, 2015·Scientific Reports·Mutsumi KimuraJuan P Hinestroza
Sep 20, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Sarah E NormanTristan G A Youngs
Jan 12, 2017·Physical Chemistry Chemical Physics : PCCP·G W DriverP-O Westlund
Feb 1, 2018·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Carmine D'AgostinoLynn F Gladden

❮ Previous
Next ❯

Citations

Aug 5, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Martin BrehmJörg Kressler
Jul 20, 2021·The Journal of Physical Chemistry. B·Katherine S LefroyMichael E Ries

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2022 Meta ULC. All rights reserved