Crystal Structure and Photophysical Properties of Iridium(Ⅲ) Complex Based on 2-(2,4-difluorophenyl)-pyrimidine and Acetylacetone Ligands

LI Chun-yan; GE Guo-ping; LIANG Hong-ze; YU Gang; LIU Zhi-wei

doi:10.3788/fgxb20143505.0571

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Crystal Structure and Photophysical Properties of Iridium(Ⅲ) Complex Based on 2-(2,4-difluorophenyl)-pyrimidine and Acetylacetone Ligands

更新时间：2020-08-12

- Crystal Structure and Photophysical Properties of Iridium(Ⅲ) Complex Based on 2-(2,4-difluorophenyl)-pyrimidine and Acetylacetone Ligands
- Chinese Journal of Luminescence Vol. 35, Issue 5, Pages: 571-577(2014)
- 作者机构：
  
  1. 宁波大学材料科学与化学工程学院宁波市新型功能材料及其制备科学实验室-省部共建国家重点实验室培育基地,浙江宁波,315211
  2. 北京大学化学与分子工程学院稀土材料化学与应用国家重点实验室北京,100871
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143505.0571
  CLC： O641.4;TN383+.1
- Received：27 December 2013，
  
  Revised：29 January 2014，
  
  Published Online：07 March 2014，
  
  Published：03 May 2014
- 稿件说明：
移动端阅览
李春艳, 葛国平, 梁洪泽等. 一种嘧啶铱（Ⅲ）配合物的结构及光电性质研究[J]. 发光学报, 2014,35(5): 571-577

LI Chun-yan, GE Guo-ping, LIANG Hong-ze etc. Crystal Structure and Photophysical Properties of Iridium(Ⅲ) Complex Based on 2-(2,4-difluorophenyl)-pyrimidine and Acetylacetone Ligands[J]. Chinese Journal of Luminescence, 2014,35(5): 571-577
李春艳, 葛国平, 梁洪泽等. 一种嘧啶铱（Ⅲ）配合物的结构及光电性质研究[J]. 发光学报, 2014,35(5): 571-577 DOI： 10.3788/fgxb20143505.0571.

LI Chun-yan, GE Guo-ping, LIANG Hong-ze etc. Crystal Structure and Photophysical Properties of Iridium(Ⅲ) Complex Based on 2-(2,4-difluorophenyl)-pyrimidine and Acetylacetone Ligands[J]. Chinese Journal of Luminescence, 2014,35(5): 571-577 DOI： 10.3788/fgxb20143505.0571.

摘要

合成了一种铱配合物（DFPPM=2-（2，4-二氟苯基）嘧啶，acac=乙酰丙酮），利用 X 射线单晶衍射仪测定了该化合物的晶体结构。利用紫外-可见吸收光谱、发射光谱对其光物理性质进行研究。结果表明：（DFPPM）

Ir（acac）的单晶结构属于三斜晶系，

-1空间群，晶胞参数

=14.444 4（7）nm，

=18.047 9（10）nm，

=19.220 0（9）nm，

=113.115（5）；，

=90.453（4）；，

=90.989（4）；，

=4 607.0（4）nm

。（DFPPM）

Ir（acac）在二氯甲烷溶液中的发射峰为 496 nm。以（DFPPM）

Ir（acac）为客体材料，制备了结构为ITO/NPB（40 nm）/CBP：（DFPPM）

Ir（acac）（质量分数10%，30 nm）/TPBi（15 nm）/Alq

（50 nm）/Mg：Ag（150 nm，10：1）/Ag（10 nm）的器件，器件的发射峰位于494 nm，最大亮度达到21 400 cd/m

，最大电流效率为12.0 cd/A，最大功率效率为 5.4 lm/W。

Abstract

An iridium(Ⅲ) complex of (DFPPM)

Ir(acac) was prepared

and characterized by X-ray single crystal diffraction. The photophysical properties of (DFPPM)

Ir(acac) were investigated by UV-Vis spectroscopy and photoluminescence (PL) technique. X-ray diffraction studies have revealed that the complex belongs to triclinic system with space group of

-1 and cell dimensions

=14.444 4(7) nm

=18.047 9(10) nm

=19.220 0(9) nm

=113.115(5)

=90.453(4)

= 90.989(4)

=4 607.0(4) nm

. The complex of (DFPPM)

Ir(acac) emits blue light with a maximum peak at 496 nm in dichloromethane at room temperature. Moreover

(DFPPM)

Ir(acac) was utilized as phosphorescence dopant in OLEDs with the structures of ITO/NPB(40 nm)/CBP:(DFPPM)

Ir-(acac) (10%

30 nm)/TPBi (15 nm)/Alq

(50 nm)/Mg:Ag(150 nm

10:1)/Ag(10 nm). The device showed blue emission at 494 nm

maximum brightness of 21 400 cd/m

current efficiency of 12.0 cd/A

and power efficiency of 5.4 lm/W.

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Keywords

references

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