Abstract: Novel poly(aryl ether quinoxaline)s(PEQs) were prepared via a new two-step procedure. First, poly(ether benzil)(PEB) was synthesized by the polycondensation of 4,4′-difluorobenzil and 4,4′-isopropylidenediphenol. Then, PEQ-1 was synthesized through chemical modification of PEB by 1,2-diaminobenzene. The mass average relative molecular mass of the PEQs could be adjusted easily as 7.492×104 and 1.486×105 by the addition of 1.0% and 1.3% mass fraction of 4,4′-oxydibenzene-1,2-diamine, respectively. The total yield of this two-step method is above 90%. The polymers were characterized by IR, NMR and other measurements. The method is simple and has a potential application value.

Key words: poly(aryl ether quinoxaline), poly(ether benzil), synthesis, characterization