Synthesis and properties of oligomers containing substituted bithiazole rings |
| |
Authors: | Shuang Liu Bingjing He Zhiquan Shen |
| |
Institution: | Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China |
| |
Abstract: | A series of novel polyimide and poly(Schiff base) oligomers containing substituted bithiazole rings were designed and synthesized, for the first time, by polycondensation of 5,5′-dimethyl-2,2′- diamino-4,4′-bithiazole (MDABT) with dianhydrides (pyromellitic dianhydride, 3,3′-4,4′-benzophenone tetracarboxylic dianhydride and bis (3,4-dicarboxyphenyl) ether dianhydride), and dialdehydes (oxalic aldehyde, isophthalaldehyde and terephthalaldehyde). The structure of the oligomers was determined by IR and 1H NMR spectroscopy, and elemental analysis. The oligomers showed good thermal stability. The Fe2+ complex of poly(Schiff base), synthesized from MDABT with oxalic aldehyde (PMTOA), was prepared with 13.7% Fe content and found to be a ferromagnet at low temperature. |
| |
Keywords: | Bithiazole Polyimide Poly(Schiff base) |
本文献已被 ScienceDirect 等数据库收录! |
|