Synthesis and Characterization of Poly(piperazinenaminonitriles)

摘要: Poly(piperazinenaminonitriles), analogs of poly(piperazinamides), were synthesized by interfacial polycondensation piperazine or 2,5-dimethylpiperazine (cis trans) with bis-electrophilic monomers (1,3- 1,4-bis(1-chloro-2,2-dicyanovinyl)benzene). Because the absence hydrogen bonding, poly(piperazinenaminonitriles) showed limited solubility in dipolar aprotic solvents and, compared to gave lower molecular weight materials thermal stability. The barrier internal rotation enaminonitrile groups, measured using dynamic NMR spectroscopy model compounds, was comparable for amide groups.