Abstract
Based on the polycondensation of bifunctional 2,2′-diamino-4, 4′-bithiazole(DABT) and trifunctional 1,3,5-benzenetricarbonyl trichloride (BTC), a novel hyperbranched aromatic polyamide PBD was synthesized with excellent solubility and good thermal stability. The structure of the polymer was confirmed by FT-IR and 1H NMR spectrum. The calculated degree of branching of our product was 52%. By exploring the influence of several different solvent systems, the yield of the polymer increased in the solvent system of DMAc/LiCl. Two kinds of metal complexes were obtained by chelation of the polyamide with Cu2+ and Ni2+, and the metal contents of the complexes were determined by complexometric titration. The magnetic behaviors of the complexes were examined as a function of magnetic field strength at 5 K, and as a function of temperature (5–300 K) at a magnetic field strength of 2.4 × 106 A/m. The results indicated that the complexes were soft ferromagnetic materials with Curie-Weiss temperature at 102 K and 53 K, respectively.
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