中华医学超声杂志

应用化学 ›› 2010, Vol. 27 ›› Issue (12): 1403-1408.DOI: 10.3724/SP.J.1095.2010.00128

• 研究论文 • 上一篇    下一篇

2-[(二苯基膦基)甲基]吡啶铜(I)配合物的合成及光物理和电致发光性质

孙伟1,3,张其胜2,程延祥1*,谢志元1,卢灿忠2,王利祥1   

  1. (1.中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室 长春 130022；
    2.中国科学院福建物质结构研究所结构化学国家重点实验室 福州；3.中国科学院研究生院 北京)
  • 收稿日期:2010-03-04 修回日期:2010-04-19 出版日期:2010-12-10 发布日期:2010-12-10
  • 通讯作者: 程延祥，男，研究员; E-mail:yanxiang@ciac.jl.cn; 研究方向：高分子及金属有机化学
  • 基金资助:
    国家自然科学基金（20874098和50772113）资助项目

Phosphorescent Cuprous Complexes with 2-pyridylmethyldiphenylphosphine: Synthesis, Photophysical Properties and Electroluminescence

SUN Wei1,3, ZHANG Qi-Sheng2, CHENG Yan-Xiang1*, XIE Zhi-Yuan1, LU Can-Zhong2, WANG Li-Xiang1   

  1. (1.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute
    of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022;
    2.State Key Laboratory of Structural Chemistry,Fujian Institute of Research
    on the Structure of Matter,Chinese Academy of Sciences,Fuzhou;
    3.The Graduate School,Chinese Academy of Sciences,Beijing)
  • Received:2010-03-04 Revised:2010-04-19 Published:2010-12-10 Online:2010-12-10
  • Contact: CHENG Yan-Xiang

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摘要：

合成了3个2-[(二苯基膦基)甲基]吡啶(L)铜(Ⅰ)配合物：Cu(L)2(BF4)(a)、Cu(L)(PPh3)2(BF4)(b)和Cu(L)(POP)(BF4)(c)(POP为双[(2-二苯膦基)苯基]醚)，其组成和结构分别经1H NMR、31P NMR、元素分析及晶体结构分析确证。 分子中，中心铜(Ⅰ)离子均为扭曲的四面体配位构型。 在除气的二氯甲烷溶液中，配合物均出现261~274 nm强π-π*吸收，未见明显的Cu→L电荷转移(MLCT)跃迁吸收。 配合物的薄膜样品发射蓝绿光，最大发射峰分别在515、476和481 nm处，光致发光效率分别为16.0%、12.9%和7.0%。 以聚乙烯咔唑(PVK)与配合物b为发光层的多层电致发光器件，当电流密度为1.0×10-3 A/cm2时，电致发光的电流效率为0.36 cd/A，最大亮度为217 cd/m2。

关键词: 有机电致发光, 磷光, 铜(I)配合物, N^P配体

Abstract:

Three novel cuprous complexes of [Cu(L)2](BF4)(a), [LCu(PPh3)2](BF4)(b) and [LCu(POP)](BF4)(c)(L=2-pyridylmethyldiphenylphosphine, POP=bis[2-(diphenylphosphino)phenyl]ether) have been prepared, and characterized by 1H NMR, 31P NMR, elemental analysis, and X-ray singlecrystal diffraction. X-ray diffraction studies have revealed that the central Cu(Ⅰ) ions of all complexes have a distorted tetrahedral coordination geometry. The complexes show intense π-π* absorption bands in the range of 261~274 nm in deaerated CH2Cl2 solution, while no characteristic metal-ligand charge transfer(MLCT) transition bands appear obviously. In rigid polymethylmethacrylate(PMMA) matrix, these CuⅠ complexes show intense blue emission at 515, 476, and 481 nm, with a quantum efficiency of 16.0%, 12.9% and 7.0%, respectively. Multilayer organic light-emitting diodes(OLEDs) using poly(N-vinylcarbazole)(PVK) and complex b were fabricated. A current efficiency of 0.36 cd/A and the maximum brightness of 217 cd/m2 have been achieved at current density of 1.0×10-3 A/cm2.

Key words: Organic light-emitting, phosphorescence, Cu(I) complexes, N^P ligand

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