Synthesis and Characterization of A New Framework Imidazo[1,2-a]pyridine Phosphorescent Ir(Ⅲ) Complexes

SUN Jun; ZHANG Yu-xiang; XI Min; XUE Zhen; ZHANG Hong-ke; HE Hai-xiao

doi:10.3788/fgxb20123301.0041

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Synthesis and Characterization of A New Framework Imidazo[1,2-a]pyridine Phosphorescent Ir(Ⅲ) Complexes

paper | 更新时间：2020-08-12

- Synthesis and Characterization of A New Framework Imidazo[1,2-a]pyridine Phosphorescent Ir(Ⅲ) Complexes
- Chinese Journal of Luminescence Vol. 33, Issue 1, Pages: 41-44(2012)
- 作者机构：
  
  西安瑞联近代电子材料有限责任公司,陕西西安,710077
- 作者简介：
- 基金信息：
  
  863"
- DOI：10.3788/fgxb20123301.0041
  CLC： TN383+.1
- Received：14 October 2011，
  
  Revised：13 November 2011，
  
  Published Online：10 January 2012，
  
  Published：10 January 2012
- 稿件说明：
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孙军, 张玉祥, 席敏, 薛震, 张宏科, 何海晓. 基于咪唑并吡啶类配体新型磷光材料的合成与表征[J]. 发光学报, 2012,33(1): 41-44

SUN Jun, ZHANG Yu-xiang, XI Min, XUE Zhen, ZHANG Hong-ke, HE Hai-xiao. Synthesis and Characterization of A New Framework Imidazo[1,2-a]pyridine Phosphorescent Ir(Ⅲ) Complexes[J]. 发光学报, 2012,33(1): 41-44
孙军, 张玉祥, 席敏, 薛震, 张宏科, 何海晓. 基于咪唑并吡啶类配体新型磷光材料的合成与表征[J]. 发光学报, 2012,33(1): 41-44 DOI： 10.3788/fgxb20123301.0041.

SUN Jun, ZHANG Yu-xiang, XI Min, XUE Zhen, ZHANG Hong-ke, HE Hai-xiao. Synthesis and Characterization of A New Framework Imidazo[1,2-a]pyridine Phosphorescent Ir(Ⅲ) Complexes[J]. 发光学报, 2012,33(1): 41-44 DOI： 10.3788/fgxb20123301.0041.

摘要

设计开发了系列新型咪唑并吡啶类铱(Ⅲ)配合物(BIPy)

Ir(acac)、(PIPy)

Ir(acac)、 (4'-MPIPy)

-Ir(acac)。在化合物Ⅲ中

当

=Ph时得到(BIPy)

Ir(acac)材料

其中BIPy和acac分别表示2-(4-联苯基)咪唑并吡啶和乙酰丙酮。将(BIPy)

Ir(acac)掺杂在N

N'-二咔唑-(1

1'-联苯)-4

4'-二胺(CBP)中制备了高效OLEDs器件

器件的最大电流效率为26.7 cd/A

最大亮度为18 000 cd/cm

色坐标为(0.32

0.60)

是首次报道的新型苯基咪唑并吡啶类铱(Ⅲ)配合物绿色磷光材料。

Abstract

Three iridium(Ⅲ) containing imidazo[1

2-a]pyridine complexes (PIPy)

Ir(acac)

(4'-MPIPy)

Ir(acac)

(BIPy)

Ir(acac) were synthesized based on reaction of iridium trichloride hydrate

2-Biphenyl-4-yl-imidazo[1

2-a]pyridine with acetylacetone. Doping multiplayer OLEDs were respectively fabricated based on (BIPy)

Ir(acac) with electron transporting ability. The doping device showed strong saturated green electrophosphorescent emission

the emission peak wavelength 516 nm and brightness of 18 000 cd/m

current efficiency of 26.7 cd/A with Commission International de L'Eclairage(CIE) coordinates of (0.32

0.60). This is the first report on new green phosphorescent material based on Ir(Ⅲ) complex.

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references

Baldo M A, O'Brien D F, You Y, et al. Highly efficient phosphorescent emission from organic electroluminescent devices [J]. Nature, 1998, 395(6698):151-154.[2] Baldo M A, Lamanskv S, Burrows P, et al. Very high-efficiency green organic light-emitting devices based on electrophosphorescence [J]. Appl. Phys. Lett., 1999, 75(1):4-7.[3] Wong Waiyeung, Ho Cheuklam, Gao Zhiqiang, et al. Multifunctional iridium complexes based on carbazole modules as highly efficient electrophosphors [J]. Angew. Chem., 2006, 118(46):7964-7967.[4] Lamansky S, Djurovich P, Murphy D, et al. Highly phosphorescent bis-cyclometalated iridium complexes: synthesis, photophysical charcterization, and use in organic light emitting diodes [J]. J. Am. Chem.Soc., 2001, 123(18):4304-4312.[5] Sun Jun, Zhang Yuxiang, Hu Lingfeng, et al. Performances of electroluminescence based on new framework phosphorescent Ir(Ⅲ) complex [J]. Chin. J. Liquid Crystal and Displays (液晶与显示), 2010, 25(3):360-363 (in Chinese).[6] Li Hongyan, Zhang Yuxiang, Zhang Hongke, et al. Effect of a series of host material on optoelectronic performance of red phosphorescent OLED [J]. Chin. J. Lumin.(发光学报), 2009, 30(5):585-589 (in Chinese).[7] Sun Jun, Zhang Yuxiang, Mei Xueyi, et al. Highly efficient blue phosphorescent OLEDs based on 1,3,5-tri(9H-carbazol-9-yl)benzene host material [J]. Chin. J. Lumin.(发光学报), 2011, 32(6):581-586 (in Chinese).[8] Lee Jonghee, Lee Jeongik, Lee Junyeob, et al. Enhanced efficiency and reduced roll-off in blue and white phosphorescent organic light-emitting diodes with a mixed host structure [J]. Appl. Phys. Lett., 2009, 94(19):193305-1-3.[9] Lee Jonghee, Lee Jeongik, Lee Junyeob, et al. Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system [J]. Appl. Phys. Lett., 2009, 95(25):253304-1-3.[10] Wang Qi, Ding Junqiao, Ma Dongge, et al. Harvesting excitons via two parallel channels for efficient white organic LEDs with nearly 100% internal quantum efficiency: fabrication and emission-mechanism analysis [J]. Adv. Funct. Mater.,2009, 19(1):84-95.[11] Yang Dongfang, Li Wenlian, Chu Bei, et al. High efficiency electrophosphorescence device using a thin cleaving layer in an Ir-complex doped emitter layer [J]. Appl. Phys. Lett., 2008, 92(25):253309-1-3.[12] Wu Zhaoxin, Wang Liduo, Lei Gangtie, et al. Investigation of the spectra of phosphorescent organic light-emitting devices in relation to emission zone [J]. Appl. Phys. Lett., 2005, 97(10):103105-1-3.

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