含菲并咪唑基团的蓝色电致发光材料

Highly Efficient Blue Electroluminescent Materials Based on Phenanthro[9,10-d]imidazole

菲并咪唑作为一类新型的蓝色荧光材料的构筑基元,其以合适的禁带宽度、较高的发光效率、优异的光热稳定性和相对平衡的载流子注入和传输能力,引起广泛关注.发展性能优良的蓝光材料对有机电致发光器件的进一步应用十分重要.本文综述了近年来基于菲并咪唑基团的蓝色电致发光材料的研究进展,系统地介绍了菲并咪唑基团的结构特征以及各类衍生物的器件性能,展望了这类化合物在电致发光领域的应用前景.

Phenanthro[9,10-d]-imidazole（PI） unit has attracted extensive attentions in organic optoelectro-nic field due to its intrinsic wide band gap, high luminescence efficiency, good thermal stability, balanced charge carrier injection and transport property as well as low fabrication cost. In this manuscript, the recently reported blue electroluminescent PI derivatives were reviewed. The structure characteristics of PI were demon-strated, and the structure-property relationships of some PI derivatives were summarized systemically. At last, all the reported highly efficient nondoped deep blue emitters were summed up in order to comprehensively evaluate the potentials of PI derivatives in organic light emitting diodes（ OLEDs） in the future.