Efficient Dipyrrin-Centered Phosphorescence at Room Temperature from Bis-Cyclometalated Iridium(III) Dipyrrinato Complexes

被引:139
|
作者
Hanson, Kenneth [1 ]
Tamayo, Arnold [1 ]
Diev, Vyacheslav V. [1 ]
Whited, Matthew T. [1 ]
Djurovich, Peter I. [1 ]
Thompson, Mark E. [1 ]
机构
[1] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA
关键词
LIGHT-HARVESTING ARRAYS; DIPYRROMETHENE COMPLEXES; STRUCTURAL-CHARACTERIZATION; CRYSTAL-STRUCTURE; ENERGY-TRANSFER; BODIPY DYES; BORON; DEVICES; PHOTODYNAMICS; DERIVATIVES;
D O I
10.1021/ic100633w
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of seven dipyrrin-based bis-cyclometalated Ir(III) complexes have been synthesized and characterized. All complexes display a single, irreversible oxidation wave and at least one reversible reduction wave. The electrochemical properties were found to be dominated by dipyrrin centered processes. The complexes were found to display room temperature luminescence with emission maxima ranging from 658 to 685 nm. Through systematic variation of the cyclometalating ligand and the meso substituent of the dipyrrin moiety, it was found that the observed room temperature emission was due to phosphorescence from a dipyrrin-centered triplet state with quantum efficiencies up to 11.5%. Bis-cyclometalated Ir(III) dipyrrin based organic light emitting diodes (OLEDs) display emission at 682 nm with maximum external quantum efficiencies up to 1.0%.
引用
收藏
页码:6077 / 6084
页数:8
相关论文
共 50 条
  • [31] Second-order NLO properties of bis-cyclometalated iridium(III) complexes: Substituent effect and redox switch
    Li, Xiang
    Wang, Hong-Qiang
    Ye, Jin-Ting
    Zhang, Yuan
    Qiu, Yong-Qing
    JOURNAL OF MOLECULAR GRAPHICS & MODELLING, 2019, 89 : 131 - 138
  • [32] Luminescent properties of novel bis-cyclometalated iridium(III) complexes bearing methoxy-substituted dibenzoylmethanate ligands
    Okamura, Naoki
    Miyazaki, Miho
    Ikawa, Shigeru
    Maeda, Takeshi
    Nakazumi, Hiroyuki
    Yagi, Shigeyuki
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2017, 653 (01) : 131 - 136
  • [33] Syntheses, crystal structures and phosphorescence properties of cyclometalated iridium(III) bis(pyridylbenzaldehyde) complexes with dithiolate ligands
    Wang, Xue-Mei
    Qiang, Jia-Yan
    Jia, Ai-Quan
    Tong, Bihai
    Zhang, Qian-Feng
    ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 2017, 72 (12): : 941 - 946
  • [34] Tuning the NLO response of bis-cyclometalated iridium(iii) complexes by modifying ligands: experimental and structural DFT analysis
    Akhtar, Mansoor
    Arif, Ali Muhammad
    Khan, Shifa Ullah
    Shan, Guo-Gang
    Xu, Hong-liang
    Su, Zhong-Min
    NEW JOURNAL OF CHEMISTRY, 2021, 45 (12) : 5491 - 5496
  • [35] Blue phosphorescence from mixed cyano-isocyanide cyclometalated iridium(III) complexes
    Dedeian, Kenneth
    Shi, Jianmin
    Forsythe, Eric
    Morton, David C.
    Zavalij, Peter Y.
    INORGANIC CHEMISTRY, 2007, 46 (05) : 1603 - 1611
  • [36] Cytotoxic Activities of Bis-cyclometalated Iridium(III) Complexes Containing Chloro-substituted κ2N-terpyridines
    Graf, Marion
    Boettcher, Hans-Christian
    Mayer, Peter
    Metzler-Nolte, Nils
    Thavalingam, Sugina
    Czerwieniec, Rafal
    ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2022, 648 (12):
  • [37] New Bis-Cyclometalated Iridium(III) Complexes with β-Substituted Porphyrin-Arylbipyridine as the Ancillary Ligand: Electrochemical and Photophysical Insights
    Moura, Nuno M. M.
    Serra, Vanda Vaz
    Bastos, Alexandre
    Biazotto, Juliana C.
    Castro, Kelly A. D. F.
    Faustino, Maria Amparo F.
    Lodeiro, Carlos
    da Silva, Roberto S.
    Neves, Maria da Graca P. M. S.
    INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 2022, 23 (14)
  • [38] Pure red electrophosphorescence from polymer light-emitting diodes doped with highly emissive bis-cyclometalated iridium(III) complexes
    Tsujimoto, Hidetaka
    Yagi, Shigeyuki
    Asuka, Hotaka
    Inui, Yuji
    Ikawa, Shigeru
    Maeda, Takeshi
    Nakazumi, Hiroyuki
    Sakurai, Yoshiaki
    JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2010, 695 (17) : 1972 - 1978
  • [39] Bis(pyrazol-1-yl)methane as Non-Chromophoric Ancillary Ligand for Charged Bis-Cyclometalated Iridium(III) Complexes
    Meng, Sheng
    Jung, Il
    Feng, Jie
    Scopelliti, Rosario
    Di Censo, Davide
    Graetzel, Michael
    Nazeeruddin, M. Khaja
    Baranoff, Etienne
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2012, (19) : 3209 - 3215
  • [40] Room-temperature NIR phosphorescence of new iridium (III) complexes with ligands derived from benzoquinoxaline
    Chen, HY
    Yang, CH
    Chi, Y
    Cheng, YM
    Yeh, YS
    Chou, PT
    Hsieh, HY
    Liu, CS
    Peng, SM
    Lee, GH
    CANADIAN JOURNAL OF CHEMISTRY, 2006, 84 (02) : 309 - 318