电磷光发光聚合物

Electrophosphorescent Light-Emitting Polymers

电致磷光材料可以同时利用单线态和三线态激子发光,具有较高的发光效率,受到人们广泛的关注。本文综述了近年来通过共价键将磷光配合物单元连接在高分子链上制备电磷光发光聚合物的研究进展。总结了主链型、侧链型以及超支化结构的电磷光发光聚合物的研究进展,评述了上述几类电磷光聚合物的发光性能与分子结构的关系。最后从电磷光发光聚合物的分子结构设计出发,在电磷光发光聚合物领域业已取得进展的基础上,分析了电磷光发光聚合物在电致发光领域应用中存在的一些问题,并展望了电磷光聚合物今后的发展方向。

Phosphorescent electroluminescent materials have attracted considerable attention due to their ability to efficiently utilize both singlet and triplet excitons and potentially high electroluminescent efficiency. In this paper, the recent progress of the synthesis of electrophosphorescent light-emitting polymers by covalently incorporating phosphorescent dyes into polymer molecular chain is summarized. The relationship of polymer structures and electroluminescent properties of copolymers is also reviewed, which mainly address the aspects by covalently introducing phosphorescent dyes into polymer main chain, or grafting phosphorescent dyes into polymer side chain, as well as fabricating hyperbranched electrophosphorescent light-emitting polymers with organometallic complexes as cores. Combined with the molecular design viewpoint and the achievement in the preparation of electrophosphorescent lightemitting polymers, the problems of the application of this kind of polymers in electroluminescent procedure are summarized, and our perspectives of the future development of this kind of polymers are also given.