基于双酚A的希夫碱型锌配位聚合物的合成及发光性能

Synthesis and Luminescent Properties of Novel Metal-organic Coordination Polymers Based on Bisphenol A

以双酚A为原料合成了具有对称的桥联结构的双水杨醛,在此基础上合成了一系列的双希夫碱配体及相应的锌配位聚合物。利用红外吸收光谱、核磁共振等方法研究了化合物的分子结构,利用热重分析研究了配合物的热稳定性,利用紫外吸收、荧光光谱研究了该系列配合物的发光性能,利用循环伏安法测试了配合物的能级带隙。研究结果表明:该系列配合物具有较好的热稳定性,热分解温度为405～443℃;发光波长为493～503nm,属于蓝绿光范围;量子效率和文献报道的相近;能级带隙约为3.04～3.23eV。

Four novel bis-Schiff base ligands and their zinc （ Ⅱ ） coordination polymers were synthesized from the bisalicylaldehydes based on the backbone of bisphenol A. The structures, thermal stabilities, luminescent properties and energy bands were investigated by infrared spectra, ^1H NMR, TG curve, UV-Vis absorption spectra and fluorescence emission spectra. The results showed that these complexes are thermally stable with high decomposition temperature at 405-443 ℃. The complexes emit blue-green fluorescence with the maxi- mum emission peaks at 493-503 nm. Their quantum yields are close to that of the repoted literatures, the band gap is about 3.04- 3.23 eV. The results above suggest that the novel coordination ploymers can be utilized as good organic electroluminescent materials.