Research And Applications Of Several Task-specific Ionic Liquids Based On Imidazole

Ionic liquids have been widely invested and applied due to its excellent physicaland chemical properties: negligible vapor pressure, wide liquid temperature range,wide electrochemical windows and high electrical conductivity, adjustable, designable,good thermal and chemical stability, environment-friendly and biocompatibilityadvantages and so on. In order to meet the requirements of varies applications,task-specific ionic liquids are attracting much attentions since ionic liquid areprogrammable. This paper on the basis of preliminary studies for the problems in theapplication of ionic liquids, to carry out the following aspects:1) Syntheses and applications of ionic liquid based on NAD+as anion. NAD+ILwas synthesized for the first time via a neutralization reaction, the structure andbiological activities was examined by1H NMR, FTIR, UV-Vis, CD andElectrochemical experiment. The new IL combine the advantages of ILs andcoenzyme (NAD~+) for their conductivity and biocatalytic properties. And then the Gelwas obtained by grinding NAD+IL, GlyIL and SWNTs. We focus on the investigationof the electrochemical biosensor, which was formed by polishing gel on the surface ofelectrode and fabricating with GDH. The electrochemical properties of the preparedelectrode were investigated by cyclic voltammetric technique, it has making a goodperformance in glucose’ oxidation and good reproducibility. This indicated that theelectrochemical biosensor wound be potentially useful in the electrochemical andelectroanalytical chemistry2) This works undertaken here can be briefly summarized to synthesisPIL/Graphene/Pt nanoparticles. Firstly, PIL (poly-1-vinyl-3-butylimidazolium) wassynthesized according to the Literature and the structure was characterized by1HNMR. Secondly, using PIL as a dispersant, graphene sheets will be disperse very wellin water via electrostatic interaction. That is the result of the strong π-π conjugateinteraction between graphene and PIL. Finally, the PIL/Graphene/Pt nanoparticleswere obtained by reducing the chloroplatinic radical anion which was entrapped byPIL/graphene. The final product was characterized by TEM and X-rayphotoelectron spectroscopy. It’s performance was examined by oxygen reduction andmethanol oxidation experiment. It makes more efficiency than poly-crystal platinumelectrode.3) ICP (infinite coordination polymer) is a new kind of metal-organic material. In this work, we fabricate ICP with ionic liquids as a ligand. In order to coordinate withmetal ion more than one, the IL must be required two or more coordination sites. Sosymmetry of carboxyl functionalized ionic liquids was synthesized byN-trimethylsillimidazole and chloroactic acid or chloropropionic acid. A series of ICPwas obtained via IL coordinating with different metal ions, the morphology of ICPwas characterized by SEM, FTIR and SEM-EDX. And it’s properties was pilotstudied.