含双噻唑和二茂铁聚席夫碱及Fe^2＋配合物的合成和性能

Synthesis and Properties of Poly(Schiff-base) and Its Ferro-complex Containing Bithiazole Rings and Ferrocene

合成了一种新型的含二茂铁和双噻唑结构的聚合席夫碱,采用红外光谱、核磁技术对产物进行了表征,研究了温度、时间和催化剂对产率的影响.结果表明,在80℃下反应6h生成的二茂铁席夫碱的产率达到87.2%;采用AlCl3为催化剂时聚合效果最好,聚二茂铁席夫碱的产率达到72.4%.热重分析表明聚合物具有较好的热稳定性;常温下聚二茂铁夫碱配合亚铁金属离子后的电导率下降,但掺杂I2后的电导率可提高到2.14×10-3S/cm,同时亚铁金属配合物的磁性测试发现其具有S形特征磁滞回线,磁饱和强度为0.612emu/g,剩余磁场强度为0.0257emu/g,矫顽力为130Oe,表明聚合席夫碱的亚铁配合物是一种有机软铁磁体.

A new poly（Schiff-base） containing ferrocene and bithiazole groups was synthesized, and characterized with FT-IR and ^1H-NMR techniques. The effects of temperature, time and catalyst of reaction on its yield were investigated. The maximum yield of ferrocene Schiff-base was obtained as 87.2% under the conditions of 80 ℃ temperature and 6 h reaction time, and the maximum yield of poly（Schiff-base） was 72.4% with the catalyst of A1C13. The thermogravimetric measurements suggested that the polymer had good thermal stability. At room temperature, the electrical conductivity and magnetic behaviors of the polymer and its complex were measured. The electrical conductivity of complex was declined when coordinated with Fe^2＋ metal salt, but through iodine doping, the electrical conductivity of poly（Schiff-base） was improved and the maximum room-temperature conductivity could reach 2.14×10^-3 S/cm for poly（Schiff-base）-I2, meanwhile, the complex exhibited a typical ＂S＂ shape hysteresis cycle, the observed coercive field was 130 Oe, and the relative saturation magnetization and remnant magnetization 0.612 and 0.0257 emu/g for the complex, respectively. The result shows that the complex is a soft organic ferromagnetic material