Synthesis And Application Of Imidazole Ionic Liquids Containing Carboxyl Functional Groups

The ionic liquids attract extensive attention due to its excellent thermal stability,outstanding stability in water,high electrical conductivity and manageable fluidity.The ionic liquids are liquid between minus 100°C and minus 200°C,which is relatively safe for experimental personnel.In terms of material synthesis,the carboxyl group from alkylmidazole ionic liquid is easy to be replaced and synthesized functionalized ionic liquids that can be widely used as solvent and catalyst.Thus,the research of ionic liquids is of great significance,in line with the green chemical concept advocated by the international community and comply with the demand of sustainable development strategy,which is generally recognized by the international community generally.Moreover,the ionic liquid as a typical representative of ionic liquids can increase the life of rare earth element,therefore,it has high potential value in the synthesis of fluorescence materials.The synthesis methods and process of several long-chain imidazole ionic liquids with carboxylic acid functional groups are mainly studied and the main research contents include:?1?The high added value of substituent imidazole was synthesized by relatively cheap imidazole group as the starting material and then reacted with3-bromine propionic acid,which successfully constructed four different alkyl long-chain imidazole-functionalized ionic liquids,namely,[Carb-C₇minm]Br?[Carb-C₈minm]Br?[Carb-C₁₂minm]Br and[Carb-C₁₆minm]Br.?2?The purpose of dissolving the rare earth metal oxide Eu₂O₃ into ionic liquid is to prepare luminescent materials containing Eu³⁺,and the luminescent properties and stable properties of luminescent materials are also studied.?3?The synthesis of ionic liquid anions was substituted for the purpose of exploring new methods of ion liquid synthesis.