NMR Self-diffusion Study of Amino Acid Ionic Liquids Based on 1-Methyl-3-Octylimidazolium in Water

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

In comparison with the conventional ionic liquids, water-miscible amino acid ionic liquids (AAILs) are considered as more biodegradable and biocompatible, less toxic, and as able to enhance the biomaterials stability. An application of some long-chain ionic liquids in catalysis, extraction, etc. requests the detailed analysis of ionic and water transport properties of their diluted aqueous solutions close to the area of its critical micelle concentration (cmc). In this work, the molecular transport properties of two 1-methyl-3-octylimidazolium-based AAILs, [C8mim][Val], and [C8mim][Leu] (with anions of l-Leucine or l-Valine), in the aqueous solutions were studied by measuring the self-diffusion coefficients and the solution’ viscosities in the temperature ranges 273–343 K at the AAIL’s concentrations below and above its cmc. The data on self-diffusion coefficients of water molecules and cations/anions of AAILs are discussed in terms of activation energies and of hydration effects. Above the cmc, the [C8mim][Val] molecules demonstrate the strengthening effect on the solvent structure, while the molecules of [C8mim][Leu] have structure-destructive effect. The results obtained for the relative dynamic viscosities show a decrease of micellar size with increasing temperature. In addition, it was found that the degrees of counterion binding for both AAILs are higher than for 1-methyl-3-octylimidazolium halides.

Язык оригиналаАнглийский
Страницы (с-по)607-618
Число страниц12
ЖурналApplied Magnetic Resonance
Том49
Номер выпуска6
DOI
СостояниеОпубликовано - 1 июн 2018

Отпечаток

amino acids
nuclear magnetic resonance
liquids
water
micelles
diffusion coefficient
transport properties
viscosity
anions
aqueous solutions
molecules
leucine
catalysis
halides
hydration
activation energy
cations
temperature

Предметные области Scopus

  • Атомная и молекулярная физика и оптика

Цитировать

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title = "NMR Self-diffusion Study of Amino Acid Ionic Liquids Based on 1-Methyl-3-Octylimidazolium in Water",
abstract = "In comparison with the conventional ionic liquids, water-miscible amino acid ionic liquids (AAILs) are considered as more biodegradable and biocompatible, less toxic, and as able to enhance the biomaterials stability. An application of some long-chain ionic liquids in catalysis, extraction, etc. requests the detailed analysis of ionic and water transport properties of their diluted aqueous solutions close to the area of its critical micelle concentration (cmc). In this work, the molecular transport properties of two 1-methyl-3-octylimidazolium-based AAILs, [C8mim][Val], and [C8mim][Leu] (with anions of l-Leucine or l-Valine), in the aqueous solutions were studied by measuring the self-diffusion coefficients and the solution’ viscosities in the temperature ranges 273–343 K at the AAIL’s concentrations below and above its cmc. The data on self-diffusion coefficients of water molecules and cations/anions of AAILs are discussed in terms of activation energies and of hydration effects. Above the cmc, the [C8mim][Val] molecules demonstrate the strengthening effect on the solvent structure, while the molecules of [C8mim][Leu] have structure-destructive effect. The results obtained for the relative dynamic viscosities show a decrease of micellar size with increasing temperature. In addition, it was found that the degrees of counterion binding for both AAILs are higher than for 1-methyl-3-octylimidazolium halides.",
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author = "Y.S. Chernyshev and A.S. Koneva and E.A. Safonova",
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NMR Self-diffusion Study of Amino Acid Ionic Liquids Based on 1-Methyl-3-Octylimidazolium in Water. / Chernyshev, Y.S.; Koneva, A.S.; Safonova, E.A.

В: Applied Magnetic Resonance, Том 49, № 6, 01.06.2018, стр. 607-618.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - NMR Self-diffusion Study of Amino Acid Ionic Liquids Based on 1-Methyl-3-Octylimidazolium in Water

AU - Chernyshev, Y.S.

AU - Koneva, A.S.

AU - Safonova, E.A.

N1 - cited By 0

PY - 2018/6/1

Y1 - 2018/6/1

N2 - In comparison with the conventional ionic liquids, water-miscible amino acid ionic liquids (AAILs) are considered as more biodegradable and biocompatible, less toxic, and as able to enhance the biomaterials stability. An application of some long-chain ionic liquids in catalysis, extraction, etc. requests the detailed analysis of ionic and water transport properties of their diluted aqueous solutions close to the area of its critical micelle concentration (cmc). In this work, the molecular transport properties of two 1-methyl-3-octylimidazolium-based AAILs, [C8mim][Val], and [C8mim][Leu] (with anions of l-Leucine or l-Valine), in the aqueous solutions were studied by measuring the self-diffusion coefficients and the solution’ viscosities in the temperature ranges 273–343 K at the AAIL’s concentrations below and above its cmc. The data on self-diffusion coefficients of water molecules and cations/anions of AAILs are discussed in terms of activation energies and of hydration effects. Above the cmc, the [C8mim][Val] molecules demonstrate the strengthening effect on the solvent structure, while the molecules of [C8mim][Leu] have structure-destructive effect. The results obtained for the relative dynamic viscosities show a decrease of micellar size with increasing temperature. In addition, it was found that the degrees of counterion binding for both AAILs are higher than for 1-methyl-3-octylimidazolium halides.

AB - In comparison with the conventional ionic liquids, water-miscible amino acid ionic liquids (AAILs) are considered as more biodegradable and biocompatible, less toxic, and as able to enhance the biomaterials stability. An application of some long-chain ionic liquids in catalysis, extraction, etc. requests the detailed analysis of ionic and water transport properties of their diluted aqueous solutions close to the area of its critical micelle concentration (cmc). In this work, the molecular transport properties of two 1-methyl-3-octylimidazolium-based AAILs, [C8mim][Val], and [C8mim][Leu] (with anions of l-Leucine or l-Valine), in the aqueous solutions were studied by measuring the self-diffusion coefficients and the solution’ viscosities in the temperature ranges 273–343 K at the AAIL’s concentrations below and above its cmc. The data on self-diffusion coefficients of water molecules and cations/anions of AAILs are discussed in terms of activation energies and of hydration effects. Above the cmc, the [C8mim][Val] molecules demonstrate the strengthening effect on the solvent structure, while the molecules of [C8mim][Leu] have structure-destructive effect. The results obtained for the relative dynamic viscosities show a decrease of micellar size with increasing temperature. In addition, it was found that the degrees of counterion binding for both AAILs are higher than for 1-methyl-3-octylimidazolium halides.

KW - Activation energy

KW - Biocompatibility

KW - Critical micelle concentration

KW - Diffusion in liquids

KW - Ionic liquids

KW - Molecules

KW - Solutions

KW - Viscosity, Amino acid ionic liquids

KW - Critical micelle concentration (cmc)

KW - Destructive effects

KW - Diluted aqueous solutions

KW - Increasing temperatures

KW - Molecular transport properties

KW - Self-diffusion coefficients

KW - Strengthening effect, Amino acids

KW - STIMULATED-ECHO

KW - RELAXATION

KW - PHYSICOCHEMICAL PROPERTIES

KW - TETRAFLUOROBORATE

KW - AQUEOUS-SOLUTIONS

KW - HYDROPHOBICITY

KW - ELECTROLYTES

KW - SOLVATION

KW - SOLVENT

KW - AGGREGATION BEHAVIOR

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U2 - 10.1007/s00723-018-1008-z

DO - 10.1007/s00723-018-1008-z

M3 - статья

AN - SCOPUS:85046014723

VL - 49

SP - 607

EP - 618

JO - Applied Magnetic Resonance

JF - Applied Magnetic Resonance

SN - 0937-9347

IS - 6

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