新型半导体激光照明用荧光材料的制备及其应用

Preparation and application of novel fluorescent materials for semiconductor laser illumination

通过改性采用自稳定沉淀聚合法制备的共聚物,得到了一组具有聚集诱导发光特性的荧光聚合物。结果表明:荧光聚合物的荧光发射波长为450~750nm,量子产率最大可达21.72%;可以通过控制制备过程中的pH值来调控聚合物分子链中的空间共轭结构,从而控制材料的荧光发射峰位;在波长为450nm的蓝光半导体激光器照射下,材料可以发射出CIE1931坐标为(0.365,0.335),色温4177K的中性白光。该新型荧光聚合物具有成本低、制备方法简单的特点,可以作为半导体激光照明用荧光材料。

A group of fluorescent polymers featuring aggregation-induced luminescence were prepared by modifying the copolymers synthesized via self-stabilized precipitation polymerization.The results show that the fluorescence emission of the polymers ranges from 450 to 750 nm,whose quantum yield is up to 21.72%.The fluorescence emission peak position is controlled by changing the pH values to adjust the spatial conjugate structure in the molecular chain during the preparation process.The material can emit neutral white light whose CIE coordinate is (0.365,0.335) and color temperature is 4 177 K under the illumination of a blue semiconductor laser whose wave length is 450 nm.The polymers can be used as fluorescent material for semiconductor laser illumination due to low costs and simple preparation method.