3-(9-carbazolyl)carbazoles and 3,6-di(9-carbazolyl)carbazoles as effective host materials for efficient blue organic electrophosphorescence
3-(9-carbazolyl)carbazoles and 3,6-di(9-carbazolyl)carbazoles as effective host materials for efficient blue organic electrophosphorescence
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DOI：
10.1002/adma.200600822
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发表时间：
2007-03-19
影响因子：
29.4
通讯作者：
Hsu, Chao-Ping
中科院分区：
文献类型：
--
作者：
Tsai, Ming-Han;Hong, Yun-Hua;Hsu, Chao-Ping
低聚咔唑中的连接拓扑（见图）对其电子特性有很大影响。 3(6),9'-连接的低聚咔唑表现出对单元之间电子耦合的异常抑制，导致局部激发态和三线态能量的极小降低（与单体相比）。再加上其优异的形态稳定性，这使得它们适合作为蓝色电致磷光器件的主体材料。
Linking topology in oligocarbazoles (see figure) has a strong influence on their electronic properties. 3(6),9'-linked oligocarbazoles exhibit unusual suppression of electronic coupling between units, leading to localized excited states and very small reduction of triplet energies (compared to the monomer). Coupled with their excellent morphological stability, this makes them suitable as host materials for blue electrophosphorescence devices.