Studies On The Syntheses Of Polymerizable Ionic Liquids

Ionic liquids can be used not only as a green solvent,but also because of the advantages of low vapor pressure,non-volatile,good thermal and chemical stability,good conductive ability,structure designed,and has been widely applied to the field of organic chemistry,electrochemistry,material chemistry and other related fields.Ionic liquids are widely used in the field because of the advantages of ionic liquids and the introduction of special functional groups.It has been a hot spot in the field that how to Introduce special functional groups synthesis Ionic liquids with excellent properties by utilizing the advantages of the ionic liquid structure designed.Compared with ionic liquids,polymerized ionic liquids(PILs)usually is solid or gel,to overcome the problem of poor plasticity of ionic liquids,can be used for the preparation of solid conductive material,CO2 adsorption material,functional materials,carbon precursor and so on.In this thesis,firstly,with the raw materials of N-methyl imidazole,N-ethyl imidazole and N-vinyl imidazole,chloroacetic acid,three carboxyl imidazole ionic liquids were synthesized with substitution reaction by microwave chemical reaction method.The products and their structures of 3-carboxymethyl-1-methyl imidazole chloride,3-carboxymethyl-l-ethyl imidazole chloride,3-carboxylase-1-methyl vinyl imidazole chloride,were characterized by 1H-NMR,13C-NMR,FT-IR.Then,with the raw materials of N-methyl imidazole,N-ethyl imidazole and N-vinyl imidazole,1,4-dibromo-2-butene,three alkenyl imidazole ionic liquids were synthesized with substitution reaction by microwave chemical reaction method.The structures of the products 1,4-Bis(3-methyl(imidazole-1-yl)-2-butetn)bromide,1,4-bis[3-methyl(imidazole-1-yl)-2-butetn]bromide,1,4-bis[3-methyl(imidazole-1-yl)-2-butetn)bromide,were characterized by 1H-NMR,13C-NMR,FT-IR.Finally,with the raw materials of four alkenyl imidazole ionic liquids,two polymerized alkenyl imidazole ionic liquids were synthesized with polymerization by microwave chemical reaction method,poly-1,4-bis(3-methyl(imidazole-1-yl)-2-butetn)bromide,poly-1,4-bis(3-ethyl(imidazole-1-yl)-2-butetn)bromide and their structures were characterized by 1H-NMR,13C-NMR,FT-IR.The experimental results showed:in this thesis,three carboxyl imidazole ionic liquids,three alkenyl imidazole ionic liquids,and two polymerized alkenyl imidazole ionic liquids were synthesized with polymerization by microwave chemical reaction method.The above 8 ionic liquids synthesis route is simple,and the yield is high,the ingredient is pure,may be used in the organic chemistry,the electrochemistry,the material chemistry and so on.