Vibrational spectroscopic study of ionic liquids: Comparison between monocationic and dicationic imidazolium ionic liquids

Moumene, Taqiyeddine; Belarbi, El-habib; Haddad, Boumediene; Villemin, Didier; Abbas, Ouissam; Khelifa, B.; Bresson, Serge

doi:10.1016/j.molstruc.2014.02.034

Cited by 50 publications

(14 citation statements)

References 23 publications

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“…Bearing in mind that ILs used in this work have a common imidazolium cation ([C 2 mim] + ) in their structure, the most characteristic absorption bands of the imidazolium ring can be seen in Figures 3a -3d) at around 3120-3126 cm -1 and 3157-3163 cm -1 attributed to C-H stretching modes of the imidazolium ring and at around 1574 cm -1 , assigned to ring in-plane symmetric/asymmetric stretch and -CH 2 (N)/-CH 3 (N)CN stretch. [33][34][35][36] Likewise, considering that pyrrolidinium polycation ([Pyr 11 ] + ) is common to all studied PILs, the absorption bands detected at 2939-2962 cm -1 and 2871-2875 cm -1 are associated to -CH 2 stretching vibrations, while the bands observed at around 1475 cm -1 are assigned to the -CH 3 bending vibration originated from the pendant methyl units of the cationic backbone (Figures 3a-3d).…”

Section: Characterization Of Pils and Ilsmentioning

confidence: 99%

Poly(ionic liquid)–Ionic Liquid Membranes with Fluorosulfonyl-Derived Anions: Characterization and Biohydrogen Separation

Gouveia

Malcaitè

Lozinskaya

et al. 2020

ACS Sustainable Chem. Eng.

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Clean and sustainable energy production has become a key global issue concerning the world's energy shortage and environmental problematic. Despite the recognized potential of biohydrogen (bioH 2 ) for sustainable development, there are still issues regarding its production and purification, such as the elimination of CO 2 , N 2 , and other impurities (H 2 O and H 2 S), so that an enriched H 2 stream can be obtained for efficient energy generation. The use of poly(ionic liquid)s (PILs) and their derived composite materials incorporating ionic liquids (PIL-IL) has been considered as a highly promising strategy to design membranes with improved CO 2 separation. In this study, membranes of pyrrolidinium-based PILs containing symmetric or asymmetric fluorosulfonyl derived anions, namely bis(fluorosulfonyl)amide ([FSI] -), (trifluoromethyl)sulfonyl-N-cyanoamide ([TFSAM] -) and (trifluoromethyl)sulfonyl-Ntrifluoroacetamide ([TSAC] -), were prepared by the incorporation of different amounts of structurally similar ILs. The PIL-IL membranes were characterized by different techniques (TGA, DSC, FT-IR and Raman) and their CO 2 /H 2 and H 2 /N 2 separation performances were investigated. Higher CO 2 /H 2 selectivities were obtained for PIL FSI-40 [C 2 mim][FSI] (α CO2/H2 = 9.0) and PIL TFSAM-40 [C 2 mim][TFSAM] (α CO2/H2 = 7.1) compared to those of PIL-IL membranes containing the conventional [TFSI]anion at similar or even higher amounts of IL's incorporation.

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Section: Characterization Of Pils and Ilsmentioning

confidence: 99%

Poly(ionic liquid)–Ionic Liquid Membranes with Fluorosulfonyl-Derived Anions: Characterization and Biohydrogen Separation

Gouveia

Malcaitè

Lozinskaya

et al. 2020

ACS Sustainable Chem. Eng.

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“…These bands correspond to the O=S=O and C-F stretching modes. For [PF 6 ] -, the anionic vibrations as weak bands at 856, 570 and 470 cm -1 , two medium intensity band around 826 and 740 cm -1 and a strong band at 751 cm -1 [16,20,36].…”

Section: Ft-raman Spectroscopy Characterizationmentioning

confidence: 99%

Synthesis, conformational studies, vibrational spectra and thermal properties, of new 1,4-(phenylenebis(methylene) bis(methyl-imidazolium) ionic liquids

Boumediene

Haddad

Paolone³

et al. 2020

Journal of Molecular Structure

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Spectroscopic data are reported in our previous research [11] and given in the supporting information.…”

Section: Methodsmentioning

confidence: 99%

Bis-methyl imidazolium methylidene bis(trifluoromethanesulfonyl)imide, crystal structure, thermal and dielectric studies

et al. 2016

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A new geminal di-cationic ionic liquid (IL) containing a central cationic unit methylidene capped by a basic functionality (imidazole) is synthesized. The compound was characterized by means of 1 H, 13 C, 19 F NMR, IR and Raman spectroscopies and its crystal structure is confirmed by single crystal X-ray diffraction method. The X-ray studies on ([M(CH 2 )IM 2+ ][2NTf −2 ]) show that it crystallizes in monoclinic system with space group: P 21/c. Thermal properties were investigated in the temperature range from 0 to 400 • C by using differential thermal (DTA) and thermogravimetric (TGA) analyses. The frequency-dependent electrical data are discussed using complex dielectric permittivity in the frequency range of (10 −2 -10 6 Hz) and in the temperature range of −50 • to 20 • C. The outstanding dielectric and thermal properties make this IL as promising candidate for electrochemical devices.

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Vibrational spectroscopic study of ionic liquids: Comparison between monocationic and dicationic imidazolium ionic liquids

Cited by 50 publications

References 23 publications

Poly(ionic liquid)–Ionic Liquid Membranes with Fluorosulfonyl-Derived Anions: Characterization and Biohydrogen Separation

Poly(ionic liquid)–Ionic Liquid Membranes with Fluorosulfonyl-Derived Anions: Characterization and Biohydrogen Separation

Synthesis, conformational studies, vibrational spectra and thermal properties, of new 1,4-(phenylenebis(methylene) bis(methyl-imidazolium) ionic liquids

Bis-methyl imidazolium methylidene bis(trifluoromethanesulfonyl)imide, crystal structure, thermal and dielectric studies

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