Geometrical and electronic structures of the dication and ion pair in the geminal dicationic ionic liquid 1,3-bis[3-methylimidazolium-yl]propane bromide

Di‐ and Tricationic Organic Salts: An Overview of Their Properties and Applications

“…On this topic, Zhang et al studied the geometric and electronic structure of bromide‐based diimidazolium salt 1 (R = CH 3 ), containing a propyl alkyl chain spacer, by performing density functional theory (DFT) calculations 23. The collected data shed light on the changes in dication geometry on going from the isolated ion to the corresponding ion pair.…”

Bis-imidazolium based poly(ionic liquid) electrolytes for quasi-solid-state dye-sensitized solar cells

“…Compared with monocationic ILs, dicationic ILs show higher thermal stability, lower volatility and more flexibility in tuning the physicochemical properties. [27][28][29][30] Here, bis-imidazolium-based poly(IL), poly(1-butyl-3-(1-vinylimidazolium-3-hexyl) imidazolium bis(trifluoromethane-sulfonyl)imide) (poly[BVIm][HIm] [TFSI]), was synthesized and dissolved in the room temperature ILs to form a gel electrolyte for high-performance quasi-solidstate DSSCs. The fabricated bis-imidazolium based poly(IL) gel electrolyte displayed a better power conversion efficiency than mono-imidazolium based poly(IL) and is close to the efficiency of ionic liquid electrolytes.…”

Theoretical Description of Ionic Liquids

“…A special class of ionic liquids have recently been synthetized using geminal imidazolium dications (Anderson et al, 2005;Payagala et al, 2007;Sun et al, 2009). This class of compounds represents an interesting variation of the cationic partner and may present several advantages over the traditional monocationic ionic liquid in their application as lubricants (Jin et al, 2006), solvents (Han & Armstrong, 2005;Xiao & Shreeve, 2005) and separation media (Anderson et al, 2005).…”