Preparation and magnetic properties of novel supramolecular polymeric complexes containing bithiazole rings

The preparation and magnetism of two supramolecular polymeric complexes, DABT/PAA-Ni2+ and DABT/PAA-Cu2+, which were obtained via electrostatic interactions of 2,2′-diamino-4,4′-bithiazole (DABT), poly(acrylic acid) (PAA), and transition metal ions (Cu2+ or Ni2+) were described. FTIR, 1H NMR, and elemental analysis were used to characterize the structures of the obtained supramolecular polymer and the corresponding complexes. The corresponding multilayer films were also constructed on the quartz substrate. UV–vis spectra and AFM images were applied to characterize these films. The result indicates a process of uniform assembling. The magnetic behavior was examined as a function of magnetic field strength at 4 K and as a function of temperature (4–300 K). It was found that DABT/PAA-Ni2+ exhibits a ferromagnetic property with a high value of relative saturation magnetization, while DABT/PAA-Cu2+ shows a special magnetic property different from the typical magnet. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008