基于二苯并呋喃的D-A型分子设计合成及在OLED中的应用

Design and Synthesis of D-A Type Molecule Based on Dibenzofuran and Their Application in OLED

本文设计并合成了一种基于二苯并呋喃、硫砜和咔唑结构的D-A型荧光材料分子,通过核磁共振1H-NMR、13C-NMR和质谱分析(ESI-MS)确定材料结构,通过热重分析(TGA)、循环伏安测试(CV)、紫外可见吸收检测(UV-Vis)及光致发光检测(PL)等测试对材料的热学和光谱学性质进行了研究,检测表征显示该材料适合用于OLED器件应用,最后将该材料作为双极型主体应用于绿色磷光器件中,获得较好的器件发光性能,1000 cd/m^(2)时的电流效率为29.5cd/A,外量子效率为13.9%。

In this paper,a D-A type fluorescent molecule based on dibenzofuran,sulfur sulfone and carbazole structures was designed and synthesized.The material structure was determined by 1H-NMR,13C-NMR and mass spectrometry(ESI-MS).Their thermal and spectroscopic properties were determined by thermal weight analysis(TGA),cyclic voltammetry(CV),ultraviolet visible absorption(UV-Vis)and photoluminescence(PL).The material was suitable for the application of OLED devices.Finally,the material was used as a bipolar host material in the green phosphate device,which good device luminescence performance was obtained.Device exhibit a current efficiency of 29.5 cd/A and an EQE of 13.9%at a brightness level of 1000 cd/m^(2).