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首页> 外文期刊>RSC Advances >Enhancing the electroluminescence performances of novel platinum(II) polymetallayne-based phosphorescent polymers through employing functionalized Ir-III phosphorescent units and facilitating triplet energy transfer
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Enhancing the electroluminescence performances of novel platinum(II) polymetallayne-based phosphorescent polymers through employing functionalized Ir-III phosphorescent units and facilitating triplet energy transfer

机译：通过采用官能化的IR-III磷光装置，增强新型铂（II）聚合物基磷光荧光聚合物的电致发光性能，并促进三重态能量转移

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摘要

Novel orange phosphorescent polymers with platinum(II) polymetallayne-based backbones have been successfully developed through Sonogashira cross-coupling among bicarbazole moieties, functionalized Ir-III phosphorescent blocks with electron injection/transporting (EI/ET) features, and trans-[PtCl2(PBu3)(2)]. Importantly, the very efficient energy-transfer process is observed from the triplet states of the polymetallayne-based backbone to the triplet metal-to-ligand charge transfer states ((MLCT)-M-3) of the phosphorescent units in the polymer backbone, which will guarantee the high phosphorescent ability of these polymers. Benefiting from the weak conjugation-extending ability of the platinum(II) ions, the polymetallayne-based backbones show high triplet energy-level to effectively block the undesired reverse energy-transfer process. Furthermore, the EI/ET features of the functionalized Ir-III phosphorescent units should balance the hole injection/transporting (HI/HT) of the bicarbazole moieties to improve the EL performances of these phosphorescent polymers. Benefiting from these merits, the phosphorescent polymers can furnish solution-processed phosphorescent OLEDs (PHOLEDs) with high EL efficiencies with current efficiency (eta(L)) of 9.17 cd A(-1), external quantum efficiency (eta(ext)) of 4.50% and power efficiency (eta(P)) of 4.04 lm W-1, representing very decent electroluminescent performances achieved by the orange phosphorescent polymers. This work herein might not only show the great potential of platinum(II) polymetallayne as the host segments in phosphorescent polymers, but also provide a new outlet to design and synthesise highly efficient phosphorescent copolymers.
机译：具有铂（II）的新型橙色磷光聚合物，通过Sonogashira在双咔唑部分中，通过Sonogashira交叉偶联成功地开发了具有电子注射/传输（EI / ET）特征的官能化的IR-III磷光块，以及转型（ PBU3）（2）]。重要的是，从聚合物基骨干的三重态状态观察到非常有效的能量转移过程，以将聚合物骨架中的磷光单元的三重态金属 - 与配体电荷转移态（（MLCT）-M-3）从聚合物骨架中的三重态金属 - - 配体电荷转移态（（MLCT）-M-3）。这将保证这些聚合物的高磷光能力。受益于铂（II）离子的弱缀合延伸能力，聚合物基骨干显示出高三重能量水平，以有效阻断不需要的反向能量转移过程。此外，官能化IR-III磷光单元的EI / ET特征应平衡双咔唑部分的空穴注射/传输（HI / HT），以改善这些磷光聚合物的EL性能。受益于这些优点，磷光聚合物可以用高EL效率提供溶液加工的磷光OLED（Pholed），其具有9.17cd A（-1），外量子效率（ETA（ETA（ETA（ETA））的效率（ETA（1）） 4.50％和功率效率（ETA（P））为4.04 LM W-1，代表橙磷光聚合物实现的非常不良的电致发光性能。本文的这项工作不仅可以显示铂（II）聚合物作为磷光聚合物中的宿主区段的巨大潜力，而且还提供了一种设计和合成高效磷光共聚物的新出口。

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  • 来源
    《RSC Advances》 |2015年第16期|共11页
  • 作者

    Huang Zuan; Liu Boao; Zhao Jiang; He Yue; Yan Xiaogang; Xu Xianbin; Zhou Guijiang; Yang Xiaolong; Wu Zhaoxin;

  • 作者单位

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Sci Dept Chem State Key Lab Mech Behav Mat MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Sch Elect &

    Informat Engn Key Lab Photon Technol Informat Xian 710049 Peoples R China;

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