Understanding the effect of molecular solvents on the microscopic network of DBU imidazole ionic liquid

Zhu, Xiao; Song, Mengling; Wang, Sihan; Dai, Sheng

doi:10.1016/j.molliq.2018.11.146

Cited by 10 publications

(2 citation statements)

References 52 publications

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“…Very recently, Dai et al [23] was exactly the opposite of that reported in the literature, the authors believed that in addition to hydrogen bond interaction, Br À also interacted with the carbon atom of EO, which increased the electron density around the carbon atom to result in the upfield shift of the resonance of C 1 (Scheme 7). On the other hand, the changes of 1 DBU mixed with aniline or 2-(phenylamino)ethanol demonstrated that DBU could activate the hydroxyl group and NH group of 2-(phenylamino)ethanol through hydrogen bonds, especially on the hydroxyl group.…”

Section: Dbu-based Ionic Liquids Scheme 4 Preparation Of Dbu-based Imentioning

confidence: 88%

DBU-Based Ionic Liquids

2020

Encyclopedia of Ionic Liquids

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Section: Dbu-based Ionic Liquids Scheme 4 Preparation Of Dbu-based Imentioning

confidence: 88%

DBU-Based Ionic Liquids

2020

Encyclopedia of Ionic Liquids

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“…Their great number of cátions and anions allows the achievement of a wide range of physical and chemical characteristics, including volatile and nonvolatile systems. This allows the control of the reaction processing, as well as the control of the solvent-solute interactions (Zhu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of the ionic liquid 1-methyl-3-(2,6-(S)-dimethyloct-2-ene)-imidazol tetrafluoroborate

Oliveira

Melo

Macedo

et al. 2021

RSD

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Ionic liquids (ILs) are good electrical conductors and organic liquid compounds at room temperature, with potential applicability in water electrolysis for H2 generation. The objective of this work is to describe the synthesis, characterization and study of the feasibility of ionic liquid 1-methyl-3-(2,6-(S)-dimethyloct-2-ene)-imidazolium tetrafluoroborate (MDI-BF4) as electrolyte to produce hydrogen through electrolysis of water. The synthesized MDI-BF4 was characterized by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), mid-infrared spectroscopy with Fourier Transform by method of attenuated total reflectance (FTIR-ATR), nuclear magnetic resonance spectroscopy of hydrogen (NMR 1H) and cyclic voltammetry (CV). The yield of the synthesis were calculate by the TGA and DSC. From the results: The infrared spectroscopy identified the functional groups of the compound and the B-F bond at 1053 cm-1. The NMR 1H analyzed and compared with literature data confirms the structure of MDI-BF4. The yield of the synthesis of MDI-BF4 which was 88.84%. The current density achieved by MDI-BF4 in the voltammogram shows that the IL can conduct electrical current regardless the concentration of water, indicating that the MDI-BF4 is a potential electrolyte for hydrogen production from water electrolysis.

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Tracking the Micro‐Heterogeneity and Hydrogen‐Bonding Interactions in Hydroxyl‐Functionalized Ionic Liquid Solutions: A Combined Experimental and Computational Study

et al. 2021

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Ionic liquids (ILs) are an important class of media that are usually used in combination with polar solvents to reduce costs and tune their physicochemical properties. In this regard, it is essential to understand the influence of adding solvents on the properties of ILs. In this work, the micro-heterogeneity and Hbonding interactions between a hydroxyl-functionalized IL, [HOEmim][TFSI], and acetonitrile (ACN) were investigated by attenuated total reflection Fourier transform infrared spectroscopy and molecular simulations. All studied IL-ACN mixtures were found to deviate from the ideal mixtures. The degree of deviations reaches the maximum at about x(ACN) = 0.7 with the presence of both homogeneous clusters of pure IL/ACN and heterogeneous clusters of IL-ACN. With the addition of ACN to IL, the mixtures undergo the transformation from "ACN solvated in [HOEmim][TFSI]" to " [HOEmim][TFSI] solvated in ACN". It is found that the newly formed H-bonding interactions between the IL and ACN is the main factor that contributes to the red shifts of OÀ H, C 2 À H, C 4,5 À H, and C alkyl À H of [HOEmim] + cation, and the blue shifts of CÀ D, C�N of ACN, and CÀ F, S=O of [TFSI] À anion. These in-depth studies on the mixtures of hydroxylfunctionalized IL and acetonitrile would help to understand the micro-heterogeneity and H-bonding interactions of miscible solutions and shed light on exploring their applications.

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Understanding the effect of molecular solvents on the microscopic network of DBU imidazole ionic liquid

Cited by 10 publications

References 52 publications

DBU-Based Ionic Liquids

DBU-Based Ionic Liquids

Synthesis and characterization of the ionic liquid 1-methyl-3-(2,6-(S)-dimethyloct-2-ene)-imidazol tetrafluoroborate

Tracking the Micro‐Heterogeneity and Hydrogen‐Bonding Interactions in Hydroxyl‐Functionalized Ionic Liquid Solutions: A Combined Experimental and Computational Study

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