C6和C9位取代基对菲并咪唑衍生物光电性质的影响OA
Influence of C6-and C9-substituents on Photoelectric Properties of Phenanthroimidazole Derivatives
为探索菲并咪唑的C6和C9位取代基对衍生物光电性质的影响,设计合成了三个热激子蓝光材料TPA-PPI-Py、TPAPPI-mPy和TPAPPI-Qu.以此三种材料作为发光层制备了电致发光器件,器件的最大外量子效率分别为4.80％、5.25％和3.29％;最大电流效率分别为5.46,5.05,3.75 cd·A-1;对应的色坐标是(0.14,0.14)、(0.15,0.11)和(0.16,0.13).结果表明,在菲并咪唑的C6及C9位引入弱吸电子取代基不影响其发光波长,但能显著提升材料载流子传输能力,在1～1 000 cd·m-2的亮度区间内,器件的外量子效率滚降均不超过10％,器件发光稳定.
To explore the influence of substituent at C6 and C9 positions of phenanthroimidazole,three hot exciton blue emitters TPAPPI-Py,TPAPPI-mPy and TPAPPI-Qu were synthesized.Based on TPAPPI-Py,TPAPPI-mPy and TPAPPI-Qu as the emitting layers in OLEDs,the EQEmax of the devices are 4.80％,5.25％and 3.29％with CEmax of 5.46,5.05,3.75 cd·A-1,respectively.Those results indicated that the weak electron-withdrawing substituents at the C6 and C9 positions did not affect the emission wavelength,but was beneficial for enhancing carrier transport capability.The efficiency roll-off of the device remains below 10％in the luminance range from 1-1 000 cd·m-2,in-dicating their excellent electroluminescence.
祝杰记;陈玉文;佟庆笑;马东阁
韩山师范学院化学与环境工程学院,广东潮州 521041||汕头大学化学化工学院,广东汕头 515063华南理工大学发光材料与器件国家重点实验室,广东 广州 510641||华东交通大学材料科学与工程学院,江西南昌 330013汕头大学化学化工学院,广东汕头 515063华南理工大学发光材料与器件国家重点实验室,广东 广州 510641
数理科学
菲并咪唑热激子取代基电致发光器件
phenanthroimidazolehot excitonsubstituentorganic light-emitting device(OLED)
《发光学报》 2026 (1)
1-9,9
2022年度广东省普通高校青年创新人才类项目(2022KQNCX047)韩山师范学院博士启动项目(QD202209)大健康产业校企共建协同创新中心(2022凯普专项,B22088)华南理工大学发光材料与器件国家重点实验室开放基金(2024-skllmd-21)广东省基础与应用基础研究基金项目(2024A1515012339)Supported by 2022 Guangdong Province Youth Innovation Talent Project for Colleges and Universities(2022KQNCX047)Hanshan Normal University PhD Starup Funding(QD202209)University-enterprise Collaborative Innovation Center for Big Health Industry(2022 Hybribio Special Project,B22088)The Open Fund of the State Key Laboratory of Luminescent Materi-als and Devices(South China University of Technology)(2024-skllmd-21)Guangdong Basic and Applied Basic Research Foundation(2024A1515012339)
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