《Equilibrium Solvation, Electron-Transfer Reactions, and Stokes-Shift Dynamics in Ionic Liquids》 was written by Ghorai, Pradip Kr.; Matyushov, Dmitry V.. Quality Control of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate And the article was included in Journal of Physical Chemistry B in 2020. The article conveys some information:
A microscopic theory of solvent response by room-temperature ionic liquids is formulated based on the dynamic longitudinal susceptibility of liquid’s charge d. The susceptibility function combines the structural information in terms of reciprocal-space structure factors with the memory function responsible for solvation dynamics. The charge-d. structure factors and corresponding intermediate scattering functions are analyzed here by mol. dynamics simulations. They show the existence of two drastically different time scales of charge-d. fluctuations. Faster, stretched-exponential dynamics are consistent with dielec. measurements. It contributes to the Stokes-shift dynamics of coumarin-153 optical dye calculated with the new theory and compared to exptl. reports. The second, much slower and exponential, relaxation shows the phenomenol. of de Gennes narrowing: the relaxation time passes through a strong maximum at the wave vector representing the first peak of the structure factor. This peak, which is particularly sharp for the charge d., contributes significantly to the equilibrium free energy of solvation, thus invalidating dielec. theories of solvation for ionic liquids Dynamics of charge d. fluctuations at the length scale consistent with the sharp peak require long observation times. Electron-transfer reactions occurring on faster time-scales are not affected by these slow dynamics. Nonergodic reorganization energy of electron transfer, accounting for the observation window established by the reaction time, drops sharply when the reaction rate crosses the main peak in the Stokes-shift loss spectrum. The dependence of the reorganization energy on the reaction rate strongly affects the energy-gap law of electron transfer, with a tendency for a shallow or entirely disappearing inverted region. The experimental part of the paper was very detailed, including the reaction process of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6Quality Control of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate)
3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. A multidisciplinary study on lonic liquids is emerging, including chemistry, materials science, chemical engineering, and environmental science. More specifically, some important fundamental viewpoints are now different from the original concepts, as insights into the nature of lonic liquids become deeper. For example, the physicochemical properties of lonic liquids are now recognized as ranging broadly from the oft quoted “nonvolatile, non-flammable, and air and water stable” to those that are distinctly volatile, flammable, and unstable. Quality Control of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem