81995-09-7Relevant academic research and scientific papers
Ionic liquid crystal as a hole transport layer of dye-sensitized solar cells
Yamanaka, Noriyo,Kawano, Ryuji,Kubo, Wataru,Kitamura, Takayuki,Wada, Yuji,Watanabe, Masayoshi,Yanagida, Shozo
, p. 740 - 742 (2005)
Use of a new ionic liquid crystal, 1-dodecyl-3-methylimidazolium iodide, and iodine as an electrolyte of dye-sensitized solar cells leads to a high short circuit photocurrent density and a high light-to-electricity conversion efficiency, due to a self-assembled structure of the imidazolium cations, resulting in high conductivity of the electrolyte. The Royal Society of Chemistry 2005.
Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems
Wang, Meng,Pan, Xu,Xiao, Shangfeng,Zhang, Changneng,Li, Wenxin,Dai, Songyuan
, p. 2299 - 2305 (2012)
In this study, a series of binary systems based ionic liquid crystals (ILCs) C12MIm(BF4)yIx (x + y = 1) are prepared by mixing ILCs 1-dodecyl-3-methylimidazolium iodide (C 12MImI) and 1-dodecyl-3-methylimidazolium tetrafluoroborate (C 12MImBF4), aiming to combine the properties of both C 12MImBF4 and C12MImI. Their mesogenic properties are characterized by thermal analysis, polarized optical microscopy, X-ray diffraction as well as anisotropic ionic conductivity measurements. It is found that the smectic A phase with interdigitated bilayer structure is observed in the C12MIm(BF4)yIx series. The binary system C12MIm(BF4)yIx has a larger mesophase temperature range and interdigitated layer spacing than pure C12MImBF4. And the anisotropic ionic conductivity of the binary system, including parallel and perpendicular to smectic layer, is higher than pure C12MImI. Moreover, in binary system C 12MIm(BF4)yIx, with the increasing content of C12MImI the ability of the anion to form three dimensional hydrogen bonds increases, resulting in the increase of the mesophase temperature range, interdigitated layer spacing and the decrease of anisotropic ionic conductivity. Furthermore, multi-component system based ILCs are obtained by introducing iodine to the binary system, and the mesophase temperature range is lowered, which is associated with the weak ability of I3 - to form hydrogen bond with cations. All these results suggest that we can regulate the mesogenic properties of ILCs as we need by making binary or even multi-component systems.
Ready Access to Anhydrous Anionic Lanthanide Acetates by Using Imidazolium Acetate Ionic Liquids as the Reaction Medium
Bousrez, Guillaume,Renier, Olivier,Kelley, Steven P.,Adranno, Brando,Tahavori, Elnaz,Titi, Hatem M.,Smetana, Volodymyr,Tang, Si-Fu,Mudring, Anja-Verena,Rogers, Robin D.
supporting information, p. 13181 - 13189 (2021/08/16)
Access to lanthanide acetate coordination compounds is challenged by the tendency of lanthanides to coordinate water and the plethora of acetate coordination modes. A straightforward, reproducible synthetic procedure by treating lanthanide chloride hydrates with defined ratios of the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]) has been developed. This reaction pathway leads to two isostructural crystalline anhydrous coordination complexes, the polymeric [C2mim]n[{Ln2(OAc)7}n] and the dimeric [C2mim]2[Ln2(OAc)8], based on the ion size and the ratio of IL used. A reaction with an IL : Ln-salt ratio of 5 : 1, where Ln=Nd, Sm, and Gd, led exclusively to the polymer, whilst for the heaviest lanthanides (Dy?Lu) the dimer was observed. Reaction with Eu and Tb resulted in a mixture of both polymeric and dimeric forms. When the amount of IL and/or the size of the cation was increased, the reaction led to only the dimeric compound for all the lanthanide series. Crystallographic analyses of the resulting salts revealed three different types of metal-acetate coordination modes where η2μκ2 is the most represented in both structure types.
