Improving optoelectronic properties of the 2,7-polyfluorene derivatives with carbazole and oxadiazole pendants by incorporating the blue-emitting iridium complex pendants in C-9 position of fluorine unit
作者:Hua Tan、Junting Yu、Yafei Wang、Jianmin Li、Jiaojiao Cui、Jian Luo、Danyan Shi、Kai Chen、Yu Liu、Kaixuan Nie、Weiguo Zhu
DOI:10.1002/pola.25017
日期:2012.1.1
To study the influence of a blue‐emitting iridium complex pendant on the optoelectronic properties of its 2,7‐polyfluorene (PF) derivatives with the carbazole and oxadiazole pendants, a class of 2,7‐PF derivatives containing carbazole, oxadiazole, and/without the cyclometalated iridium complex pendants in the C‐9 positions of fluorene unit were synthesized. Their thermal, photophysical, electrochemical
研究发蓝光的铱络合物悬垂物对其带有咔唑和恶二唑悬垂物的2,7-聚芴(PF)衍生物的光电性能的影响,咔唑和恶二唑悬垂物是一类包含咔唑,恶二唑和/的2,7-PF衍生物合成了在芴单元C-9位置没有环金属化铱络合物的侧基。研究了它们的热,光物理,电化学和电致发光(EL)特性。在这些2,7-PF衍生物(P 1 –P 4)中,P 2和P 3在二氯甲烷中表现出更高的光致发光效率,在单发射层聚合物发光器件中表现出更好的EL性能。最高亮度3888 cd / m 2在基于P 2和P 3的器件中,最大电流效率分别为2.9 cd / A。最大亮度和效率级别分别是基于父级2,7-PF派生(P 1)的设备的相应级别的1.7和2.1倍。我们的工作表明,通过将发蓝光的铱配合物作为侧基引入氟单元的烷基侧链中,可以改善2,7-PF衍生物的EL性质。©2011 Wiley Periodicals,Inc. J Polym Sci