Synthesis and photophysical and electrochemical properties of new cyclometalated platinum complex containing oxadiazole ligand

  • Deng Ji-yong  (邓继勇)
  • Liu Yu  (刘煜)
  • Hu Zheng-yong  (胡峥勇)
  • Zhu Mei-xiang  (朱美香)
  • Zhu Wei-guo  (朱卫国)Email author


A new cyclometalated platinum complex containing 2, 5-bis(naphthalene-1-yl)-1,3,4-oxadiazole ligand was synthesized and characterized. The UV-Vis absorptions and photoluminescent properties of the ligand and its platinum complex were investigated. A characteristic metal-ligand charge transfer absorption peak at 439 nm in the UV spectrum and a strong emission peak at 625 nm in the photoluminescence spectrum were observed for this complex in dichloromethane. Cyclic voltammtry (CV) analysis shows that the EHOMO (energy level of the highest occupied molecular orbital) and EHOMO (energy level of the lowest unoccupied molecular orbital) of the platinum complex are about −5.69 and −3.25 eV, respectively, indicating that the oxadiazole-based platinum complex has a potential application in electrophosphorescent devices used as a red-emitting material.

Key words

cyclometalated platinum complex oxadiazole synthesis photoluminescence electrochemical property 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    ZHANG Xiao-wei, YANG Cui-luo, LI Zhong-an, et al. Synthesis and characterization of novel orange-emitting iridium(III) complexes with diphenylquinoline ligands containing fluorinated substituent[J]. Chin Chem Lett, 2006, 17(3): 411–414.Google Scholar
  2. [2]
    SUN W F, ZHU H J, BARRON P M. Binuclear cyclometalated platinum(II) 4,6-diphenyl-2, 2-bipyridine complexes: Interesting photoluminescent and optical limiting materials[J]. Chem Mater, 2006, 18(10): 2602–2610.CrossRefGoogle Scholar
  3. [3]
    SHAVALEEV N M, ADAMS H, BEST J, et al. Deep-red luminescence and efficient singlet oxygen generation by cyclometalated platinum(II) complexes with 8-hydroxyquinolines and quinoline-8-thiol[J]. Inorg Chem, 2006, 45(23): 9410–9415.CrossRefGoogle Scholar
  4. [4]
    YIN B L, NIEMEYER F, WILLIAMS J A G, et al. Snythesis, structure, and photophysical properties of luminescent platinum(II) complexes containing cyclometalated 4-styryl-functionalized 2-phenylpyridine ligands[J]. Inorg Chem, 2006, 45(21): 8584–8596.CrossRefGoogle Scholar
  5. [5]
    WANG Zheng-xiang, SHU Wan-yin, ZHOU Zhong-cheng, et al. Fluorescence properties and application of doping complexes Eu1−xLx(TTA)3phen as light convesion agents[J]. Journal of Central South University of Technology, 2003, 10(4): 342–346.CrossRefGoogle Scholar
  6. [6]
    GUO Dong-cai, SHU Wan-yin, ZHANG Xin-qian, et al. Synthesis and luminescent properties of ternary complexes of terbium with thenoyltrifluoroacetone and reactive ligand[J]. Journal of Central South University of Technology, 2004, 11(3): 304–308.CrossRefGoogle Scholar
  7. [7]
    GONG X, BENMANSOUR H, BAZAN G C, et al. Red electrophosphorescence from a soluble binaphthol derivative as host and iridium complex as guest[J]. J Phys Chem B, 2006, 110(14): 7344–7348.CrossRefGoogle Scholar
  8. [8]
    KUNUGI Y, MANN K R, MILLER L L, et al. A vapochromic LED[J]. J Am Chem Soc, 1998, 120(3): 589–590.CrossRefGoogle Scholar
  9. [9]
    MCGARRAH J E, EISENBERG R. Dyes for photoinduced charge separation based on platinum diimine bis(acetylide) chromophores: Synthesis, luminescence and transient absorption studies[J]. Inorg Chem, 2003, 42(14): 4355–4365.CrossRefGoogle Scholar
  10. [10]
    HUA F, KINAYYIGIT S, CABLE J R, et al. Green photoluminescence from platinum(II) complexes bearing silylacetylide ligands[J]. Inorg Chem, 2005, 44(3): 471–473.CrossRefGoogle Scholar
  11. [11]
    GUO F Q, SUN W F. Synthesis, photophysics and optical limiting of platinum(II) 4-tolyterpyridyl arylacetylide complexes[J]. Inorg Chem, 2005, 44(11): 4055–4065.CrossRefGoogle Scholar
  12. [12]
    WONG W Y, HE Z, SO S K, et al. A multifunctional platinum-based triplet emitter for OLED applications[J]. Organometallics, 2005, 24(16): 4079–4082.CrossRefGoogle Scholar
  13. [13]
    BROOKS J, BABAYAN Y, LAMANSKY S, et al. Synthesis and characterization of phosphorescent cyclometalated platinum complexes[J]. Inorg Chem, 2002, 41(12): 3055–3066.CrossRefGoogle Scholar
  14. [14]
    DIEZ A, FOMIES J, GARCIA A, et al. Synthesis, structural characterization, and photophysical properties of palladium and platinum(II) complexes containing 7, 8-benzoquinolinate and various phosphine ligands[J]. Inorg Chem, 2005, 44(7): 2443–2453.CrossRefGoogle Scholar
  15. [15]
    LIU Jian, ZHU Mei-xiang, JIANG Chang-yun, et al. Green-yellow electrophosphorescence from di-[2,5-diphenyl-1,3,4-oxadiazole C2′, N3] platinum (II) doped PVK devices[J]. Chin Phy Lett, 2005, 22(3): 723–727.CrossRefGoogle Scholar
  16. [16]
    JIANG C Y, YANG W, PENG J B, et al. High-efficiency, saturated red-phosphorescent polymer light-emitting diodes based on conjugated and non-conjugated polymer doped with an Ir complex[J]. Adv Mater, 2004, 16(6): 537–541.CrossRefGoogle Scholar
  17. [17]
    KAVITHA J, CHANG S Y, CHI Y, et al. In search of high-performance platinum phosphorescent materials for the fabrication of red electroluminescence devices[J]. Adv Funct Mater, 2005, 15(2): 223–229.CrossRefGoogle Scholar
  18. [18]
    COCCHI M, FATTORI V, VIRGILI D, et al. Highly efficient organic electrophosphorescent light-emitting diodes with a reduced quantum efficiency roll off at large current density[J]. Appl Phys Lett, 2004, 84(7): 1052–1054.CrossRefGoogle Scholar
  19. [19]
    WU Zhong-lian, ZHU Mei-xiang, LIU Yu, et al. Synthesis and photoluminescence of a novel iridium complex (BuPhOXD)2Ir(acac) with unit of 1,3,4-oxadiazole[J]. Chin Chem Lett, 2005, 16(2): 241–244.CrossRefGoogle Scholar
  20. [20]
    LIANG Fu-shun, ZHOU Quan-guo, CHENG Yan-xiang, et al. Oxadiazole-functionalized europium(III) β-diketonate complex for efficient red electroluminescence[J]. Chem Mater, 2003, 15(10): 1935–1937CrossRefGoogle Scholar
  21. [21]
    LIANG Bo, JIANG Chang-yun, CHEN Zhao, et al. New iridium complex as high-efficiency red phosphorescent emitter in polymer light-emitting devices[J]. J Mater Chem, 2006, 16: 1281–1286CrossRefGoogle Scholar
  22. [22]
    THOMAS K R J, VELUSAMY M, LIN J T, et al. Efficient red-emitting cyclometalated iridium(III) complexes containing lepidine-based ligands[J]. Inorg Chem, 2005, 44(16): 5677–5685.CrossRefGoogle Scholar

Copyright information

© Published by: Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Deng Ji-yong  (邓继勇)
    • 1
    • 2
  • Liu Yu  (刘煜)
    • 1
  • Hu Zheng-yong  (胡峥勇)
    • 1
  • Zhu Mei-xiang  (朱美香)
    • 1
  • Zhu Wei-guo  (朱卫国)
    • 1
    Email author
  1. 1.School of ChemistryXiangtan UniversityXiangtanChina
  2. 2.Department of Chemistry and EngineeringInstitute of Hunan EngineeringXiangtanChina

Personalised recommendations