Synthesis and Luminescence Property of Two New Blue Phosphorescent Iridium(Ⅲ) Diazine Complexes

GE Guo-ping; LI Chun-yan; GUO Hai-qing

doi:10.3788/fgxb20123306.0591

您当前的位置：

首页 >

文章列表页 >

Synthesis and Luminescence Property of Two New Blue Phosphorescent Iridium(Ⅲ) Diazine Complexes

paper | 更新时间：2020-08-12

- Synthesis and Luminescence Property of Two New Blue Phosphorescent Iridium(Ⅲ) Diazine Complexes
- Chinese Journal of Luminescence Vol. 33, Issue 6, Pages: 591-595(2012)
- 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北京分子科学国家实验室, 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/fgxb20123306.0591
  CLC： TN383+.1
- Received：18 April 2012，
  
  Revised：2012-5-23，
  
  Published Online：10 June 2012，
  
  Published：10 June 2012
- 稿件说明：
移动端阅览
葛国平, 李春艳, 郭海清. 新型蓝色磷光嘧啶铱(Ⅲ)配合物的合成及发光性质[J]. 发光学报, 2012,(6): 591-595

GE Guo-Peng, LI Chun-Yan, GUO Hai-Qing. Synthesis and Luminescence Property of Two New Blue Phosphorescent Iridium(Ⅲ) Diazine Complexes[J]. Chinese Journal of Luminescence, 2012,(6): 591-595
葛国平, 李春艳, 郭海清. 新型蓝色磷光嘧啶铱(Ⅲ)配合物的合成及发光性质[J]. 发光学报, 2012,(6): 591-595 DOI： 10.3788/fgxb20123306.0591.

GE Guo-Peng, LI Chun-Yan, GUO Hai-Qing. Synthesis and Luminescence Property of Two New Blue Phosphorescent Iridium(Ⅲ) Diazine Complexes[J]. Chinese Journal of Luminescence, 2012,(6): 591-595 DOI： 10.3788/fgxb20123306.0591.

摘要

设计并合成了以2-(2

4-二氟苯基)嘧啶(DFPPM)为主配体的两种新型二嗪铱配合物 (Ph:苯基)和

用核磁共振(NMR)和质谱等方法对其进行了表征

并用紫外-可见吸收光谱和光致发光光谱对其光学性质进行了研究。光致发光光谱结果显示:配合物的发射峰波长为472 nm和489 nm;而配合物的发射峰波长为447 nm和472 nm

1931CIE色度坐标为(0.14

0.15)

是一种深蓝色磷光材料。以为客体材料、PVK为主体材料制备了电致发光器件

研究了其电致发光光谱。结果表明

电致发光光谱与光致发光光谱相比有较大程度的红移。

Abstract

We designed and synthesized two new iridium (Ⅲ) diazine complexes and

where Ph= phenyl

containing 2-(2

4-difluorophenyl)- pyrimidine (DFPPM) as the cyclometalated ligands. OLEDs with iridium(Ⅲ) diazine complexes as phosphor have high-efficiency and long luminance half-life

however

diazine compounds show a significantly redshift of the emission band than pyridine compounds. Therefore

it will be a great challenge to synthesize blue phosphorescent materials with diazine compounds as ligands. The complexes were characterized by nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry (MS) and their photophysical properties were investigated by UV-Vis spectroscopy and photoluminescence (PL) technique. The PL spectrum of in solution has its maximum emission peak at 472 nm and 489 nm

whereas has its maximum emission peak at 447 nm and 472 nm. The luminescence of shifts to the blue region compared to that of (DFPPM)

Ir(acac)

indicating that the HOMO-LUMO gap is increased due to the higher ligand field strength of the phosphine. Compared with

shows a significantly blue-shift of the emission band. The ligand field strength of CN is larger than Cl due to its strong donor and acceptor ability. This causes larger splitting of the d-orbital and consequently more lowering of the metal-centered HOMO. Complex of (DFPPM)

Ir(CN)(PPh

) emits deep blue light with Commission Internationale de lEclairage (CIE) coordinates of (0.14

0.15). Electroluminescence (EL) device was fabricated when the complex of was doped into polymer host polyvinylcarbazole (PVK). Compared to the photoluminescence spectrum

a red-shifted of emission was observed from the electroluminescence spectrum. The reason of red-shift of EL spectra is in progress.

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(6698):151-154.[2] Chi Y, Chou P T. Contemporary progresses on neutral, highly emissive Os(Ⅱ) and Ru(Ⅱ) complexes [J]. Chem. Soc. Rev., 2007, 36(9):1421-1431.[3] Carlson B, Phelan G D, Kaminsky W, et al. Divalent osmium complexes:Synthesis, characterization, strong red phosphorescence, and electrophosphorescence [J]. J. Am. Chem. Soc., 2002, 124(47):14162-14172.[4] Cheng Y M, Yeh Y S, Ho M L, et al. Dual room-temperature fluorescent and phosphorescent emission in 8-quinolinolate osmium(ⅱ) carbonyl complexes:Rationalization and generalization of intersystem crossing dynamics [J]. Inorg. Chem., 2005, 44(13):4594-4603.[5] Wu P C, Yu J K, Song Y H, et al. Synthesis and characterization of metal complexes possessing the 5-(2-pyridyl) pyrazolate ligands:The observation of remarkable osmium-induced blue phosphorescence in solution at room temperature [J]. Organometallics, 2003, 22(24):4938-4946.[6] Yu J K, Hu Y H, Cheng Y M, et al. A remarkable ligand orientational effect in osmium-atom-induced blue phosphorescence [J]. Chem. Eur. J., 2004, 10(24):6255-6264.[7] Moussa J, Wong K M C, Chamoreau L M, et al. Luminescent 1D chain of platinum(Ⅱ) terpyridyl units with p-dithiobenzoquinone organometallic linker:Self-aggregation imparted from Pt…Pt/π-π interactions [J]. Dalton. Trans., 2007 (32):3526-3530.[8] Kavitha J, Chang S Y, Chi Y, et al. In search of high-performance platinum(Ⅱ) phosphorescent materials for the fabrication of red electroluminescent devices [J]. Adv. Funct. Mater., 2005,15(2):223-229.[9] Gong X, Ostrowski J C, Bazan G C, et al. Electrophosphorescence from a conjugated copolymer doped with an iridium complex:High brightness and improved operational stability [J]. Adv. Mater., 2003, 15(1):45-49.[10] Chen X, Liao J L, Liang Y M, et al. High-efficiency red-light emission from polyfluorenes grafted with cyclometalated iridium complexes and charge transport moiety [J]. J. Am. Chem. Soc., 2003, 125(3):636-637.[11] Lamansky S, Djarovich P, Murphy D, et al. Highly phosphorescent bis-cyclometalated iridium complexes:Synthesis, photophysical characterization, and use in organic light emitting diodes [J]. J. Am. Chem. Soc., 2001, 123(18):4304-4312.[12] Hwang F M, Chen H Y, Chen P S, et al. Iridium(Ⅲ) complexes with orthometalated quinoxaline ligands:Subtle tuning of emission to the saturated red color [J]. Inorg. Chem., 2005, 44(5):1344-1353.[13] Su Y J, Hung H L, Li C L, et al. Highly efficient red electrophosphorescent devices based on iridium isoquinoline complexes:Remarkable external quantum efficiency over a wide range of current [J]. Adv. Mater., 2003, 15(11):884-888.[14] Holmes R J, Forrest S R, Tung Y J, et al. Blue organic electrophosphorescence using exothermic host-guest energy transfer [J]. Appl. Phys. Lett., 2003, 82(15):2422-2424.[15] Yeh S J, Wu M F, Chen C T, et al. New dopant and host materials for blue-light-emitting phosphorescent organic electroluminescent devices [J]. Adv. Mater, 2005, 17(3):285-289.[16] Lee C L, Das R R, Kim J J. Polymer-based blue electrophosphorescent light-emitting diodes using a bisorthometalated Ir(Ⅲ) complex as the triplet emitter [J]. Chem. Mater., 2004, 16(23):4642-4646.[17] Lee S J, Park K M, Yang K, et al. Blue phosphorescent Ir(Ⅲ) complex with high color purity:Fac-tris(2',6'-difluoro-2,3'-bipyridinato-N,C4)iridium(Ⅲ) [J]. Inorg. Chem., 2009, 48(3):1030-1037.[18] Tsuboyama A, Mizutani H, Okada S, et al. Luminescence device and display apparatus and metal coordination compound EPO Patent:EP1191612. 2002-03-27.[19] Ge G P, Yu X H, Guo H Q, et al. Polymer-based blue electrophosphorescent light-emitting diodes based on a new iridium(Ⅲ) diazine complex [J]. Synthetic. Met., 2009, 159(12):1178-1182.[20] Ge G P, He J, Guo H Q, et al. Highly efflcient phosphorescent iridium (Ⅲ) diazine complexes for OLEDs:Different photophysical property between iridium (Ⅲ) pyrazine complex and iridium (Ⅲ) pyrimidine complex [J]. J. Organomet. Chem., 2009, 694(19):3050-3057.[21] Lyu Y Y, Byun Y, Kwon O, et al. Substituent effect on the luminescent properties of a series of deep blue emitting mixed ligand Ir(Ⅲ) complexes [J]. J. Phys. Chem. B, 2006, 110(21):10303-10314.[22] Zhang Xuju, Xu Yunhua, Shi Huahong. Synthesis and phosphorescence of a new greenish-blue lighting-emitting Iridium(Ⅲ) bis(1-phenylpyridine)(1,2,4-triazole pyridine) [J]. Chin. J. Lumin.(发光学报), 2007, 28(1):44-48 (in Chinese).

Views

149

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Synthesis and Luminescence Property of Four Phosphorescent Iridium(Ⅲ) Pyrazine Complexes

Effect of YF₃ Electron Injection Layer on The Performance of Organic Light-emitting Devices

Hybrid White Organic Light-emitting Devices Based on Quantum Well Structure

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

Effect of Contaminated Organic/Organic Interface on The Stability of Organic Light-emitting Devices

Related Author

LIU Zhi-wei

YU Gang

GUO Zhi-yong

GE Guo-ping

SHENG Ye-feng

DU Chun-nuan

LIU Xing-yuan

LIN Jie

Related Institution

College of Chemistry and Molecular Engineering, Peking University

State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University

University of Chinese Academy of Sciences

State Key Laboratory of Luminescence and Applications, Changchun Insitute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

Xi'an University of Technology

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰