以铱配合物为核、3,6-咔唑为枝的超支化电磷光聚合物的合成与发光性能

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (7): 1480.

• 研究论文 • 上一篇

以铱配合物为核、3,6-咔唑为枝的超支化电磷光聚合物的合成与发光性能

应磊, 王磊, 张安琪, 许运华, 杨伟, 曹镛

华南理工大学高分子光电材料与器件研究所, 教育部特种功能材料重点实验室, 广州 510640

收稿日期:2008-11-04 出版日期:2010-07-10 发布日期:2010-07-10
通讯作者: 杨伟, 男, 博士, 教授, 主要从事有机/高分子光电材料及器件研究. E-mail: pswyang@scut.edu.cn
基金资助:
国家“九七三”计划项目(批准号: 2009CB623601)和国家自然科学基金(批准号: 20574021, U0634003)资助.

Synthesis and Electroluminescent Properties of Hyperbranched Light-emitting Polymers with Iridium Complex as Core and 3,6-Carbazole as Branch

YING Lei, WANG Lei, ZHANG An-Qi, XU Yun-Hua, YANG Wei*, CAO Yong

Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Special Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, China

Received:2008-11-04 Online:2010-07-10 Published:2010-07-10
Contact: YANG Wei. E-mail: pswyang@scut.edu.cn
Supported by:
国家“九七三”计划项目(批准号: 2009CB623601)和国家自然科学基金(批准号: 20574021, U0634003)资助.

摘要/Abstract

摘要：

采用Suzuki缩聚反应制备了以铱配合物为核、3,6-咔唑为枝的超支化电磷光聚合物(PCzIrMppy1和PCzIrMppy3). 超支化聚合物PCzIrMppy3的光致发光量子效率为62%, HOMO能级为-5.22 eV, 接近阳极ITO/PEDOT∶PSS的能级(-5.20 eV), 表明其优异的空穴注入性能. 以PCzIrMppy3聚合物为发光层制备的绿光电磷光电致发光器件ITO/PEDOT∶PSS/Emissive layer/CsF/Al的最大电流效率为10.4 cd/A, 最大亮度为34758 cd/m². 此外, 器件的效率随电流密度的衰减较慢, 说明这种超支化结构可有效减少高电流密度下的浓度猝灭.

关键词: 铱配合物; 咔唑; 超支化聚合物; 绿光发射

Abstract:

Hyperbranched electrophosphorescent polymers, which had a core of iridium complex, 3,6-carba-zole as branch, were synthesized by Suzuki polycondensation. The photoluminance quantum efficiency of the PCzIrMppy3 polymer was 62%, and the HOMO energy levels of the resulted polymers was -5.22 eV, respectively, which was very close to the anode ITO/PEDOT∶PSS of -5.20 eV, suggesting their excellent hole inject property. The green electrophosphorescent light-emitting device based on PCzIrMppy3 polymer with structure of ITO/PEDOT∶PSS/Emissive layer/CsF/Al achieved maximal luminous efficiency of 10.4 cd/A and maximal luminance of 34758 cd/m². Besides, the device performance was isolated with respect to current density, which indicated that this kind of hyper-branched molecular structure was quite favorable for reducing triplet annihilation of electrophosphorescent copolymers at high current density.

Key words: Iridium complex; 3,6-Carbazole; Hyperbranched polymer; Green light-emission

TrendMD:

应磊, 王磊, 张安琪, 许运华, 杨伟, 曹镛. 以铱配合物为核、3,6-咔唑为枝的超支化电磷光聚合物的合成与发光性能. 高等学校化学学报, 2010, 31(7): 1480.

YING Lei, WANG Lei, ZHANG An-Qi, XU Yun-Hua, YANG Wei*, CAO Yong. Synthesis and Electroluminescent Properties of Hyperbranched Light-emitting Polymers with Iridium Complex as Core and 3,6-Carbazole as Branch. Chem. J. Chinese Universities, 2010, 31(7): 1480.

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以铱配合物为核、3,6-咔唑为枝的超支化电磷光聚合物的合成与发光性能

Synthesis and Electroluminescent Properties of Hyperbranched Light-emitting Polymers with Iridium Complex as Core and 3,6-Carbazole as Branch

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