Influence of the Electric Charge of Spin Probes on Their Diffusion in Room-Temperature Ionic Liquids

Influence of the Electric Charge of Spin Probes on Their Diffusion in Room-Temperature Ionic Liquids Научная публикация

Журнал

Journal of Physical Chemistry B
ISSN: 1520-6106

Вых. Данные

Год: 2021, Том: 125, Номер: 32, Страницы: 9235-9243 Страниц : 9 DOI: 10.1021/acs.jpcb.1c02493

Авторы

Mladenova-Kattnig B.Y. ³ , Chumakova N.A. ^1,2 , Kattnig D.R. ³ , Grigor'ev I.A. ⁴ , Grampp G. ⁵ , Kokorin A. ^1,6

Организации

1	(Данные Web of science) Russian Acad Sci, NN Semenov Fed Res Ctr Chem Phys, Moscow 119991, Russia
2	(Данные Web of science) Moscow MV Lomonosov State Univ, Chem Dept, Moscow 119991, Russia
3	(Данные Web of science) Univ Exeter, Living Syst Inst, Exeter EX4 4QD, Devon, England
4	(Данные Web of science) Russian Acad Sci, NN Vorozhtsov Novosibirsk Inst Organ Chem, Siberian Branch, Novosibirsk 630090, Russia
5	(Данные Web of science) Graz Univ Technol, Inst Phys & Theoret Chem, A-8010 Graz, Austria
6	(Данные Web of science) Plekhanov Russian Univ Econ, Moscow 115093, Russia

The rotational and translational diffusion of negatively charged and uncharged spin probes in five imidazolium-based room-temperature ionic liquids (RTILs), 1-ethyl-3-methylimidazolium tetrafluoroborate, emimBF(4), 1-butyl-3-methylimidazolium tetrafluoroborate, bmimBF(4), 1-octyl-3-methylimidazolium tetrafluoroborate, omimBF(4), 1-octyl-3-methylimidazolium hexafluorophosphate, omimPF(6), and 1-octyl-3-methylimidazolium chloride, omimCl, has been studied by means of electron paramagnetic resonance spectroscopy. Detailed analyses of the spin-Hamiltonian parameters and spin exchange interactions have been carried out. The temperature dependences of the line broadening induced by the electronic dipole-dipole interaction and the electron spin exchange coupling are determined. The translational mobility of spin probes is semiquantitatively characterized and successfully explained in the framework of a hypothesis based on the assumption of polar and unpolar domains within the RTILs.

Mladenova-Kattnig B.Y. , Chumakova N.A. , Kattnig D.R. , Grigor'ev I.A. , Grampp G. , Kokorin A.
Influence of the Electric Charge of Spin Probes on Their Diffusion in Room-Temperature Ionic Liquids
Journal of Physical Chemistry B. 2021. V.125. N32. P.9235-9243. DOI: 10.1021/acs.jpcb.1c02493 WOS Scopus

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