Applications of Perfluorinated Phenylenes for Organic Electroluminescent Devices

全氟亚苯基在有机电致发光器件中的应用

基本信息

批准号：
12554027
负责人：
SUZUKI Toshiyasu
金额：
$ 6.02万
依托单位：
Okazaki National Research Institutes
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12554027/
关键词：
organic light-emitting diode Electroluminescence Electron-transport material

项目摘要

Perfluorinated oligo(p-phenylene)s including perfluoro-p-quinquephenyl to -octiphenyl (PF-5P to -8P) have been synthesized by the organocopper cross-coupling method. Two PF-6P derivatives containing trifluoromethyl and perfluoro-2-naphtyl groups were also prepared. All compounds are colorless solids and insoluble in common organic solvents. The differential scanning calorimetry measurements indicated that they are highly crystalline solids without glass transitions. The electron-transport capabilities of perfluorinated oligo(p-phenylene)s are excellent compared with perfluorinated phenylene dendrimers. The maximum luminance of the naphtyl derivative is 19970 cd/m^2 at 10.0 V. The luminance-voltage and current-voltage characteristics of PF-7P and -8P are almost identical to those of PF-6P.Perfluoro-1, 3, 5-tris(p-quaterphenyl)benzene (PF-13Y) and perfluoro-1, 3, 5-tris(p-quinquephenyl)benzene (PF-16Y) have been synthesized and characterized. They showed higher glass transition temperatu … More res compared with perfluoro-1, 3, 5-tris(p-terphenyl)benzene (PF-1OY). Organic light-emitting diodes (OLEDs) were fabricated using these materials as the electron-transport layers. PF-13Y and -16Y are better electron-transporters than PF-1OY. The electron mobilities of PF-1OY and A1q_3 were measured by the time-of-flight technique. PF-1OY showed higher electron mobilities (10^<-4> cm2/Vs) and weaker electric field dependence compared with A1q3.One of the keys to highly efficient phosphorescent emission in organic light-emitting devices is to confine triplet excitons generated within the emitting layer. We employ starburst perfluorinated phenylenes (C60F42) as a both hole- and exciton-block layer, and a hole-transport material 4, 4, 4 -tri(N-carbazolyl) triphenylamine as a host for the phosphorescent dopant dye in the emitting layer. A maximum external quantum efficiency reaches to 19.2%, and keeps over 15% even at high current densities of 10-20 mA/cm^2, providing several times the brightness of fluorescent tubes for lighting. Less

全氟寡寡烯基（P-苯基）S已通过OrganoCopper交叉耦合方法合成，包括全氟-P- Qunquephenyl至-octipiphenyl（PF-5P至-8p）。还制备了两个含有三氟甲基和全氟-2-萘型基团的PF-6P衍生物。所有化合物都是无色固体，并且不溶于常见的有机溶液。降低量量表测量表明它们是没有玻璃过渡的高度结晶固体。与全氟化苯烯树状聚合物相比，全氟化寡烯（P-苯基）的电子传输能力非常出色。 Naphtyl衍生物的最大亮度为19970 CD/M^2在10.0 V. PF-7P和-8P的亮度 - 电压和电流 - 电压特性几乎与PF-6P.Perfluoro-1，3，3，5-Tris（P-Qualpaterphenyl）苯甲苯基（Pf-Quaterphenyl）苯甲酸苯甲酸苯甲酸苯酚（PF-13y）（PF-13Y（PF-13y）和perfluor）和perfluor（pf-Quaterphenyl）和perfluor， 5-Tris（p- Quinquephenyl）苯（PF-16Y）已合成和表征。与Pertluoro-1、3、5-Tris（P-Terphenyl）苯（PF-1OY）相比，它们显示出更高的玻璃过渡温度……RES更高。使用这些材料作为电子传输层制造有机发光二极管（OLEDS）。 PF-13Y和-16Y比PF-1OY更好的电子转运蛋白。 PF-1OY和A1Q_3的电子迁移率通过飞行时间技术测量。与A1Q3相比，PF-1OY显示出更高的电子迁移率（10^<-4> CM2/V）和较弱的电场依赖性。我们使用Starburst全氟苯基（C60F42）作为孔和令人兴奋的块层，以及一种孔传输材料4、4、4--三 - 三（N-甲基唑基）TripHenenylamine作为磷光层中磷脂层的宿主。最大外部量子效率达到19.2％，即使在10-20 mA/cm^2的高电流密度下也保持超过15％，这是荧光管的亮度以进行照明。较少的