We synthesized a new MXene/PANI composite by chemical oxidative polymerization of aniline monomers with enhanced electrochemical performances.

Cationic polymerization of p-methylstyrene ( p-MeSt) in imidazolium-based [NTf 2−1 ] ionic liquids (ILs) was investigated. The effects of the anions, cations, and alkyl chain length of ILs on p-MeSt solubility and viscosity were comprehensively studied. The COSMO-RS method, which is a valuable tool for screening and selecting ILs, was also applied to identify the most suitable solvent for p-MeSt cationic polymerization.The results revealed that p-MeSt cationic polymerization proceeded in a milder exothermic manner in ILs than in a traditional organic solvent. Controlled polymerizations were achieved in [Bmim][NTf 2 ] with a CumOH/BF 3 OEt 2 initiating system at −25°C when 2,6-di-tert-butylpyridine was introduced. The cationic polymerization mechanism of p-MeSt in ILs was proposed on the basis of the results of density functional theory and the terminal structures of polymers. † Electronic supplementary information (ESI) available. See View Article Online a GPC trace was bimodal; other GPC traces were all unimodal. [p-MeSt] 0 = 1.88 mol L −1 , [TMPCl] 0 = [CumCl] 0 = [CumOH] 0 = [p-MeStCl] 0 = 7.43 mmol L −1 , [TiCl 4 ] 0 = [BF 3 OEt 2 ] 0 = [SnCl 4 ] 0 = 133.69 mmol L −1 , T = −25°C. The reaction time in ILs and CH 2 Cl 2 was 2 h. Polymer Chemistry PaperThis journal is

Covalently grafted polyethyleneimine–hydroxylated three-dimensional graphene nanocomposites prepared by ring-opening polymerization exhibit superior CO2 capture behavior.