首页> 美国卫生研究院文献>ACS Omega >Control of Singlet Emission Energy in a Diphenyloxadiazole ContainingFluorophore Leading To Thermally Activated Delayed Fluorescence
【2h】

Control of Singlet Emission Energy in a Diphenyloxadiazole ContainingFluorophore Leading To Thermally Activated Delayed Fluorescence

机译:含二苯基恶二唑的单线态发射能量的控制荧光团导致热激活延迟荧光

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

2-(4-(9,9-Dimethylacridin-10(9H)-yl)phenyl)-5-phenyl-1,3,4-oxadiazole has an energy difference between the lowest excited singlet and triplet states (ΔEST) of ca. 0.24 eV. Introduction of two electronegative fluorine atoms onto the acceptor portion of the molecule to give 2-(4-(9,9-dimethylacridin-10(9H)-yl)-3,5-difluorophenyl)-5-phenyl-1,3,4-oxadiazole lowers the energy of the singlet emission with a negligible effect on the corresponding triplet energy, leading to a donor–acceptor compound with decreased ΔEST of ca. 0.13 eV that displays thermally activated delayed fluorescence. Organic light-emitting diodes fabricated using the latter compound display high EQEmax of 21.9% at a luminance of 10 cd/m2 and sky-blue emission, however, they suffer from a large efficiency roll-off at increased luminance.
机译:2-(4-(9,9-二甲基ac啶-10(9H)-基)苯基)-5-苯基-1,3,4-恶二唑的ca最低激发单重态和三重态(ΔEST)之间具有能量差。 0.24 eV。将两个带负电的氟原子引入分子的受体部分,得到2-(4-(9,9-二甲基ac啶-10(9H)-基)-3,5-二氟苯基)-5-苯基-1,3, 4-恶二唑降低了单重态发射的能量,而对相应的三重态能量的影响可忽略不计,从而导致供体-受体化合物的ΔEST降低。显示热激活延迟荧光的0.13 eV。使用后一种化合物制造的有机发光二极管在10 cd / m 2 的亮度下显示21.9%的高EQEmax,并且产生天蓝色发射,但是它们在工作时的效率下降很大。增加亮度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号