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Efficient binary white light-emitting polymers grafted with iridium complexes as side groups

机译：用铱络合物接枝的高效二元透光聚合物作为侧基

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摘要

Efficient binary white-light-emitting electrophosphorescent copolymers were designed and synthesized via Suzuki polymerization. These copolymers were constructed by grafting a small amount of fluorinated iridium complexes as the side chain of the poly(fluorene-co-2,3-bisphenyl-6-fluoroquinoxaline) backbone. Efficient white-light emission was obtained simultaneously from the fluorescent blue lightemitting backbone and the tethered phosphorescent yellow light-emitting iridium species. A peak luminous efficiency of 7.20 cd A~1 with the Commission Internationale de l'Eclairage coordinates of (0.32, 0.38) were obtained based on copolymer PFQ-IrFppy. The white-light emission of devices from the copolymer is stable over the whole white-light region at various applied voltages, and the luminous efficiencies decline slightly with increasing current density. These observations highlighted that the strategy of utilizing both the blue fluorescence from the backbone and yellow phosphorescence from the side chains can be an encouraging approach to realize efficient binary white light-emission.
机译：通过铃木聚合设计和合成了高效的二元白光电磷光胶共聚物。通过接枝少量氟化铱络合物作为聚（芴-Co-2,3-双苯基-6-氟喹啉）骨架的侧链来构建这些共聚物。从荧光蓝光透明骨架和束缚磷光黄色发光铱物质同时获得高效的白光发射。基于共聚物PFQ-IRFPPY获得（0.32,0.38）的委员会Internationale de L'Eclarage坐标的高峰发光效率为7.20cd a〜1。来自共聚物的装置的白光发射在各种施加电压下整个白光区域稳定，并且发光效率随着电流密度的增加而略微下降。这些观察结果强调，利用来自侧链的骨干和黄色磷光的蓝色荧光的策略可以是实现有效二元发光的令人鼓舞的方法。

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  • 来源
    《RSC Advances》 |2015年第109期|共7页
  • 作者

    Ting Guo; Wenkai Zhong; Jianhua Zou;

  • 作者单位

    Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China.;

    Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China.;

    Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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