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Controllable bistable electrical conductivity switching behavior and resistive memory effects have been demonstrated in Al/polymer/indium-tin oxide (ITO) sandwich structure devices, constructed from non-conjugated vinyl copolymers of PTPA n OXD m with pendant donor–acceptor chromophores. The observed electrical bistability can be attributed to the field-induced intra- and intermolecular...
A new triphenylamine-containing AB 2 type monomer with one carboxylic acid and two amino groups, 4-(bis(4-aminophenyl)amino)benzoic acid (3), was synthesized and used for the preparation of hyperbranched poly(triphenylamine amide)s. The self-polycondensation of the AB 2 monomer (3) afforded hyperbranched poly(triphenylamine amide) with amino end groups. The molecular weight of the...
A novel diamine containing heterocyclic pyridine and triphenylamine substituents namely, 4-(4-triphenylamine)-2,6-bis(4-aminophenyl)pyridine was synthesized via the Chichibabin reaction and reduction. The diamine was used in the preparation of poly(pyridine-imide) by direct polycondensation with 4,4′-hexafluoroisopropylidenediphthalic anhydride in N-methyl-2-pyrrolidinone. The poly(pyridine-imide)...
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