一种基于三氟甲基取代的2-苯并[b]噻吩基吡啶配体的红色电致磷光材料及器件

徐茂梁; 李文连; 李明涛; 王歌扬; 周瑞; 杜渭松

doi:null

您当前的位置：

首页 >

文章列表页 >

一种基于三氟甲基取代的2-苯并[b]噻吩基吡啶配体的红色电致磷光材料及器件

论文 | 更新时间：2020-08-11

- 一种基于三氟甲基取代的2-苯并[b]噻吩基吡啶配体的红色电致磷光材料及器件
- A New Iridium Complex with Trifluoromethyl-Substituted 2-benzo[b]thiophen-2-yl-pyridine Ligand and Its Application in OLEDs
- 发光学报 2007年28卷第3期页码：433-436
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所, 激发态物理重点实验室,吉林长春,130033
  2. 西安近代化学研究所,陕西西安,710065
- 作者简介：
- 基金信息：
  
  国家自然科学基金(90201012)();西安近代化学研究所创新基金(MPKFJJ08856)资助项目()
- DOI：
  中图分类号： TN383.1
- 收稿日期：2007-02-05，
  
  修回日期：2007-03-12，
  
  纸质出版日期：2007-05-20
- 稿件说明：
移动端阅览
徐茂梁, 李文连, 李明涛, 王歌扬, 周瑞, 杜渭松. 一种基于三氟甲基取代的2-苯并[b]噻吩基吡啶配体的红色电致磷光材料及器件[J]. 发光学报, 2007,28(3): 433-436

XU Mao-liang, LI Wen-lian, LI Ming-tao, WANG Ge-yang, ZHOU Rui, DU Wei-song. A New Iridium Complex with Trifluoromethyl-Substituted 2-benzo[b]thiophen-2-yl-pyridine Ligand and Its Application in OLEDs[J]. Chinese Journal of Luminescence, 2007,28(3): 433-436
徐茂梁, 李文连, 李明涛, 王歌扬, 周瑞, 杜渭松. 一种基于三氟甲基取代的2-苯并[b]噻吩基吡啶配体的红色电致磷光材料及器件[J]. 发光学报, 2007,28(3): 433-436 DOI：

XU Mao-liang, LI Wen-lian, LI Ming-tao, WANG Ge-yang, ZHOU Rui, DU Wei-song. A New Iridium Complex with Trifluoromethyl-Substituted 2-benzo[b]thiophen-2-yl-pyridine Ligand and Its Application in OLEDs[J]. Chinese Journal of Luminescence, 2007,28(3): 433-436 DOI：

摘要

研究了一种新型红色磷光材料及其在有机电致磷光器件(OLEDs)中应用.在经典红色磷光材料btp

Ir(acac)的配体2-苯并噻吩吡啶的吡啶环的5位引入吸电子基团CF

将辅助配体换为2-吡啶甲酸

成功研制出了双(2-(2′-苯并[b]噻吩基)吡啶)吡啶甲酸合铱配合物[(btfmp)

Ir(pic)].这种结构可以改变了原配合物的电子云分布

三氟甲基的引入将导致原分子的LUMO能下降

减小了HOMO与LUMO的能隙

引起发光峰位的红移

但2-吡啶甲酸又可引起发光蓝移

最终得到了最大峰位为637nm的饱和红光新的铱(Ⅲ)配合物

为通过简单配体修饰设计和制备新的有机磷光材料提供了一种简洁途径.

Abstract

By introducing a trifluoromethyl group on 5-position of the pyridyl ring of 2-benzo[b]thiophen-2-yl-pyridine

a new red emission iridium complex [(btfmp)

Ir(pic)] using pyridyl-2-carboxylic acid as ancilary ligand was synthesized and characterized. We observed that a CF

substituent on the 5-position of the ligand can decrease in the bandgap between the HOMO and LUMO levels

so as to result in large red shift of the emission band

but pyridyl-2-carboxylic acid acted as the ancilary ligand lead to emission shifting to blue. As a result saturated red light emitting EL based on red emission at 637nm from the iridium complex was observed

a peak luminance efficiency of 3.0cd/A

and the CIE color coordinates of (

=0.65

=0.29) which are almost not changed under the varied driving current were obtained.

关键词

Keywords

references

Baldo M A,O'Brien D F,You Y,et al.Highly efficient phosphorescent emission from organic electroluminescent devices[J].Nature,1998,395:151-154.

O'Brien D F,Baldo M A,Thompson M E,et al.Improved energy transfer in electrophosphorescent devices[J].Appl.Phys.Lett.,1999,74(3):442-444.

Baldo M A,Thompson M E,Forrest S R.High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer[J].Nature,2000,403:750-753.

Xie H Z,Liu M W,Wang O Y,et al.Reduction of self-quenching effect in organic electrophosphorescence emitting devices via the use of sterically hindered spacers in phosphorescence molecules[J].Adv.Mater.,2001,13(16):1245-1248.

Lamansky S,Djurovich P,Murphy D,et al.Synthesis and characterization of phosphorescent cyclometalated iridium complexes[J].Inorg.Chem.,2001,40(7):1704-1711.

Brooks J,Babayan Y,Lamansky S,et al.Synthesis and characterization of phosphorescent cyclometalated platnium complexes[J].Inorg.Chem.,2002,41(12):3055-3066.

Adachi C,Baldo M A,Forrest S R,et al.High-efficiency red electrophosphorescence devices[J].Appl.Phys.Lett.,2001,78(11):1622-1624.

Baldo M A,Lamansky S,Burrows P E,et al.Very high-efficiency green organic light-emitting devices based on electrophosphorescence[J].Appl.Phys.Lett.,1999,75(1):4-6.

Adachi C,Baldo M A,Thompson M E,et al.Nearly 100% internal phosphorescence efficiency in an organic light emitting device[J].J.Appl.Phys.,2001,90(10):5048-5055.

Xu M L,Li W L,Li T L,et al.A new iridium(Ⅲ) complex and its application in organic electrophosphorescent device[J].Chin.J.Lumin.(发光学报),2005,26(5):690-692 (in Chinese).

Xu M L,Li M T,Hong Z R,et al.Highly efficient red electrophosphorescent device based on an new iridium complex with trifluoromethyl-substituted 2-benzo[b] thiophen-2-yl-pyridine ligand[J].Opt.Mater.,2006,28(8-9):1025-1028.

Lamansky S,Djurovich P,Murphy D,et al.Highly phosphorescent bis-cyclometalated iridium complexes:synthesis,photo-physical characterization,and use in organic light emitting diodes[J].J.Am.Chem.Soc.,2001,123(18):4304-4312.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

一种高电流密度下效率不降低的绿光有机电致发光器件

具有减少自猝灭效果的铱配合物掺杂型红色聚合物磷光器件

以LiF修饰阴极的有机电致发光器件性能的提高

一种新型铱(Ⅲ)配合物及其有机电致发光器件