Abstract
Two novel conjugated polymers PV and PP were synthesized by Heck coupling or Ni(0)-mediated polymerization. They contain 3 or 1 vinylene bonds per repeat unit for PV and PP, respectively, as well as a pendant 1,3,4-oxadiazole on the vinylene bond. PV, that carry additional dodecyloxy pendant groups, showed higher solubility than PP being readily soluble in common organic solvents like THF, chloroform and 1,2-dichloroethane. PV had T g lower than 25 °C, while the T g for PP was 135 °C. No weight loss was observed up to 310–320 °C in N 2 and the anaerobic char yield was about 65% at 800 °C. PV and PP emitted blue-green and violet-blue light both in solution and thin film with PL emission maximum at 456–517 nm and 362–470 nm, respectively. The PL emission maximum of PV in solution was gradually red-shifted with increasing the solvent polarity. The PL intensity as well as the PL emission maximum of PV thin film was slightly affected upon annealing at 150 °C even for 60 min.
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