Gao Lijun, Li Liuyang, Li Yunqiu, He Congcong, Zhou Liming, Qu Xiongwei, Fang Shaoming
School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Tianjin 300130, China.
Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China.
Polymers (Basel). 2023 Feb 21;15(5):1064. doi: 10.3390/polym15051064.
A europium complex with double bonds was synthesized with crotonic acid as the ligand and a europium ion as the center ion. Then, the obtained europium complex was added to synthesized poly(urethane-acrylate) macromonomers to prepare the bonded polyurethane-europium materials by the polymerization of the double bonds in the complex and the poly(urethane-acrylate) macromonomers. The prepared polyurethane-europium materials had high transparency, good thermal stability and good fluorescence. The storage moduli of polyurethane-europium materials are obviously higher than those of pure polyurethane. Polyurethane-europium materials exhibit bright red light with good monochromaticity. The light transmittance of the material decreases slightly with increases in the europium complex content, but the luminescence intensity gradually increases. In particular, polyurethane-europium materials possess a long luminescence lifetime, which has potential applications for optical display instruments.
以巴豆酸为配体、铕离子为中心离子合成了一种含双键的铕配合物。然后，将所得铕配合物添加到合成的聚（聚氨酯 - 丙烯酸酯）大分子单体中，通过配合物中的双键与聚（聚氨酯 - 丙烯酸酯）大分子单体的聚合反应制备键合聚氨酯 - 铕材料。所制备的聚氨酯 - 铕材料具有高透明度、良好的热稳定性和良好的荧光性能。聚氨酯 - 铕材料的储能模量明显高于纯聚氨酯。聚氨酯 - 铕材料发出具有良好单色性的亮红色光。随着铕配合物含量的增加，材料的透光率略有下降，但发光强度逐渐增加。特别是，聚氨酯 - 铕材料具有较长的发光寿命，在光学显示仪器方面具有潜在应用。
