Highly thermal stable two-electron transport materials (ETMs) based on the triptycene containing phenylpyridine derivatives were designed and synthesized by Suzuki-Miyaura coupling reactions efficiently. Among them, TPP shows a high triplet energy gap (E_T = 2.85 eV), high glass transition temperature (T_g = 142 °C), deep HOMO level (7.0 eV) and good electron mobility. TPP performed as ETM for the green phosphorescent OLED was achieved high external quantum efficiency (EQE) compared to that of the device with TmPyPB as ETM. Moreover, thermal stability was demonstrated after thermal annealing of the device at 100 °C for 30 min, resulting in the TPP-based device reached a high EQE of 13.6% at a luminance of 100 cd m⁻², while that of TmPyPB-based device have dramatically degraded under otherwise identical conditions.

通过Suzuki-Miyaura偶联反应，有效地设计和合成了基于含三联苯的苯基吡啶衍生物的高热稳定性双电子传输材料（ETM）。其中，TPP具有较高的三重态能隙（E _T  = 2.85 eV），较高的玻璃化转变温度（T _g  = 142°C），较深的HOMO能级（7.0 eV）和良好的电子迁移率。与使用TmPyPB作为ETM的设备相比，用作绿色磷光OLED的EPP的TPP获得了很高的外部量子效率（EQE）。此外，在将器件在100°C下热退火30分钟后证明了热稳定性，从而使基于TPP的器件在100 cd m ^-2的亮度下达到了13.6％的高EQE。，而在其他相同条件下，基于TmPyPB的设备的性能却急剧下降。