In the present research, 1-butyl-2,3-dimethyl-4-vinylimidazolium trifluoromethane sulfonate (triflate) was synthesized and polymerized. This is the first report of the synthesis and polymerization of this ionic liquid monomer. The resulting polymer was characterized by NMR, GPC and thermal analysis (DSC and TGA). The number average molecular weight of the polymer was around 39,600 g/mol (PD = 1.75). The polymer was ion-exchanged to create the trifluoromethyl sulfonylimide (TSFI) and hexafluorophosphate (PF6-) polymer derivatives. Poly(1-butyl- 2,3-dimethyl-4-vinylimidazolium triflate) and poly(1-butyl-2,3-dimethyl-4-vinylimidazolium TFSI) were characterized by TGA and all the three polymers were characterized by DSC. The TGA showed that poly(1-butyl-2,3-dimethyl-4-vinylimidazolium triflate) and poly(1-butyl-2,3-dimethyl -4-vinylimidazolium TFSI) had the same decomposition temperature profiles, with mass loss beginning at 400 degrees Celsius and ending at 510 degrees Celsius. Glass transition characteristics were evaluated by DSC. Poly(1-butyl-2,3-dimethyl-4-vinylimidazolium hexafluorophosphate) exhibited the lowest onset glass transition temperature, 78 degrees Celsius, as compared to 94 degrees Celsius for poly(1-butyl-2,3-dimethyl-4-vinylimidazolium triflate) and 96 degrees Celsius for poly(1-butyl-2,3-dimethyl-4-vinylimidazolium TFSI).
Department, Program, or Center
School of Chemistry and Materials Science (COS)
Thomas W. Smith
Yang, Fan, "Synthesis and Characterization of Ionic Liquid Monomers and Polymers Derived from 2-substituted-1,3-dialkyl-4(5)-vinylimidazolium salts" (2012). Thesis. Rochester Institute of Technology. Accessed from
RIT – Main Campus