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Synthesis and magnetic properties of complexes of a conjugated hyperbranched polymer containing bithiazole rings

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Abstract

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 Co2+ and Sm3+. The magnetic behavior of coordination compounds was measured as a function of magnetic field strength (0−4.8 × 106 A/m) at 5 K and as a function of temperature (5–300 K) at magnetic field strength of 2.4 × 106 A/m. The magnetic hysteresis loops of PBTADB-Sm3+ and PBTADB-Co2+ 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.

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Authors and Affiliations

  1. Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China

    Neng-wen Ding, Wei-lin Sun  (孙维林) & Zhi-quan Shen

  2. Ningbo City College of Vocational Technology, Ninbo, 315100, China

    Yan Lin

Authors
  1. Neng-wen Ding
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  2. Wei-lin Sun  (孙维林)
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  3. Yan Lin
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  4. Zhi-quan Shen
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Corresponding author

Correspondence to Wei-lin Sun  (孙维林).

Additional information

This work was financially supported by the National Natural Science Foundation of China (Nos. 21174129 and 20674071).

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Ding, Nw., Sun, Wl., Lin, Y. et al. Synthesis and magnetic properties of complexes of a conjugated hyperbranched polymer containing bithiazole rings. Chin J Polym Sci 30, 759–769 (2012). https://doi.org/10.1007/s10118-012-1162-y

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  • DOI: https://doi.org/10.1007/s10118-012-1162-y

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