热活化延迟荧光聚合物及其电致发光器件

Thermally Activated Delayed Fluorescence Polymers and Applications in Organic Light Emitting Devices

热活化延迟荧光(TADF)聚合物,不仅具有小分子TADF材料高的激子利用效率特性,而且还具备分子多样性好、可溶液加工、低成本、以及易实现大面积柔性器件等诸多优势,在近几年受到广泛的关注并展现了良好的应用前景。本文从TADF聚合物分子设计原理、器件结构及发光机理出发,依据TADF聚合物的构筑方法不同,概括了其结构设计策略,详述了各种类型TADF聚合物的分子结构和光电性能及其在有机电致发光器件领域应用的研究进展,最后探讨了TADF聚合物存在的问题,并展望了其发展前景。

Thermally activated delayed fluorescence(TADF) polymers,which not only have the feature of high exciton utilization efficiency,but also possess the advantages of good molecular diversity,solution processing,low cost,and easy realization of large-area flexible devices,etc,have sparked immense attention and shown great potential in the future applications in the past few years.In this review,we start with a description of molecule design principle,device structure and luminescence mechanism of TADF polymers.Next,the structural modification strategies of TADF polymers are summarized according to the different construction strategies and the molecular structure and optoelectronics properties of different types of TADF polymers with a particular emphasis on the recent advances in organic light emitting diodes are illustrated.Finally,the current problems of TADF polymers are discussed,and the perspective and development of TADF polymers are also presented.