For the purpose of improving device efficiency and reducing cost, it is necessary to develop pure organic molecules with room temperature phosphorescence (RTP). A high efficiency pure organic RTP polymer, poly-p-phenylene vinylene (PPV) derivative (Br-PPV-CHO), was designed and synthesized, which possesses a blue emission at 496 nm, an emission lifetime of 14.1 μs, and a photoluminescence quantum yield of 12.2%, and the HOMO and LUMO of −5.35 eV and −2.75 eV, respectively, showing a great potential application in the emitting layer of OLED. A device fabricated with the PPV derivative as the emitting material layer shows a max luminance of 194 cd/m² when the Br-PPV-CHO content was 0.5 wt %, demonstrating the best RTP performance. The good properties of Br-PPV-CHO come from the substituent groups of bromine and aromatic aldehyde, and the molecular structure design strategy in the PPV derivative supplies a useful guidance for the design and syntheses of organic RTP materials.

为了提高装置效率并降低成本，有必要开发具有室温磷光（RTP）的纯有机分子。设计并合成了一种高效的纯有机RTP聚合物聚对亚苯基亚乙烯基（PPV）衍生物（Br-PPV-CHO），它在496 nm处具有蓝色发射，发射寿命为14.1μs，并且具有光致发光性。量子产率为12.2％，HOMO和LUMO分别为-5.35 eV和-2.75 eV，显示出在OLED发射层中的巨大潜力。用PPV衍生物作为发光材料层制造的器件的最大亮度为194 cd / m ²当Br-PPV-CHO的含量为0.5重量％时，显示出最佳的RTP性能。Br-PPV-CHO的优良性能来自于溴和芳香醛的取代基，PPV衍生物的分子结构设计策略为有机RTP材料的设计和合成提供了有用的指导。