Dispirocycles: Platforms for the Construction of High‐Performance Host Materials for Phosphorescent Organic Light‐Emitting Diodes
作者:Xiang‐Yang Liu、Yi‐Jie Zhang、Xiyu Fei、Man‐Keung Fung、Jian Fan
DOI:10.1002/chem.201806207
日期:2019.5.10
9′‐spirobifluorene (SBF) are becoming more and more attractive for use as host materials in organic optoelectronic devices. Herein, two dispirocycles, namely, dispiro[fluorene‐9,9′‐anthracene‐10′,9′′‐fluorene] and 10,10′′‐diphenyl‐10H,10′′H‐dispiro[acridine‐9,9′‐anthracene‐10′,9′′‐acridine], were used for the construction of host materials 1–4. The attached triphenylamino group determines the thermal, photophysical
诸如9,9'-螺二芴(SBF)之类的螺环化合物越来越多地用作有机光电器件中的主体材料。本文中,两个dispirocycles,即,二螺[芴-9,9'-蒽-10',9'' -芴]和10,10'' -二苯基- 10 ħ,10'' ħ -dispiro [吖-9, 9'-蒽-10',9'' -吖啶],被用于主体材料的施工1 - 4。附着的三苯氨基决定了热,光物理,电化学和电荷传输性质,因此它们具有不同的电致发光性能。基于二螺所述设备[芴-9,9'-蒽-10',9'' -芴](2)和10,10'' -二苯基- 10 ħ,10'' ħ[dispiro [acridine-9,9'-蒽-10',9''-acridine](3)分子平台表现出大于21%的外部量子效率,并且具有很高的功率效率(≈100lm W -1)。这些结果表明,以固有的刚性扩展双螺环分子平台的应用潜力,可用于开发有机发光二极管的高效主体材料。