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A novel conjugated hyperbranched polymer containing bithiazole rings(PBTADB) was synthesized by polycondensation of 1,3,5-benzenetricarboxaldehyde and 2,2’-diamino-4,4’-bithiazole(DABT).The structure of the hyperbranched polymer was confirmed by FT-IR and ~1H-NMR.PBTADB dissolved in organic polar solvents such as DMSO and NMP.Bithiazole rings were introduced to provide bidentate N-donor sites for binding metal ions.The metal complexes were prepared by chelation of the polymer with Co~(2+) and Sm~(3+).The magnetic behavior of coordination compounds was measured as a function of magnetic field strength(0-4.8×10~6 A/m) at 5 K and as a function of temperature(5-300 K) at magnetic field strength of 2.4×10~6 A/m.The magnetic hysteresis loops of PBTADB-Sm~(3+)and PBTADB-Co~(2+)showed the typical ’S’ shape at 5 K with the Curie-Weiss temperature T_θ=96 K and 41 K respectively.The results show that they exhibit properties of soft ferromagnetic materials.
A novel conjugated hyperbranched polymer containing bithiazole rings (PBTADB) was synthesized by polycondensation of 1,3,5-benzenetricarboxaldehyde and 2,2’-diamino-4,4’-bithiazole (DABT). The structure of the hyperbranched polymer was confirmed by FT-IR and ~ 1H-NMR.PBTADB dissolved in organic polar solvents such as DMSO and NMP.Bithiazole rings were introduced to provide bidentate N-donor sites for binding metal ions. The metal complexes were prepared by chelation of the polymer with Co ~ (2+) and Sm ~ (3 +). The magnetic behavior of coordination compounds was measured as a function of magnetic field strength (0-4.8 × 10 -6 A / m) at 5 K and as a function of temperature -300 K) at magnetic field strength of 2.4 × 10 -6 A / m. The magnetic hysteresis loops of PBTADB-Sm ~ (3+) and PBTADB-Co ~ (2+) showed the typical ’S’ shape at 5 K with the Curie-Weiss temperature T_θ = 96 K and 41 K respectively.The results show that they exhibit properties of soft ferromagnetic materials.