Citation: Wei Guo ZHU, Xiao Qiang WEI, Mei Xiang ZHU, Zhi Yun LU, Bo LIANG, Ming Gui XIE, De Qiang ZHANG, Yong QIU. Red Electroluminescence and Photoluminescence from Novel Binuclear Europium Complex with Squaric Acid Ligand[J]. Chinese Chemical Letters, ;2001, 12(10): 921-924. shu

Red Electroluminescence and Photoluminescence from Novel Binuclear Europium Complex with Squaric Acid Ligand

1.
College of Chemistry, Xiangtan University, Xiangtan, 411105;
2.
Department of Chemistry, Sichuan University, Chendu, 610064;
3.
Department of Chemistry, Tsinghua University, Beijing, 100084

Received Date: 6 March 2001

Fund Project: This work was supported by National Natural Science Foundation of China (29972032) and Provincial Natural Science Foundation of Hunan (00JJY2043).

A novel binuclear europium β-diketone complex with squaric acid ligand was synthesized for the first time. Its structure was elucidated by IR, UV, and Elemental Analysis.Red light emitting diode (LED) was fabricated by using the novel europium complex as an emitting layer, tris(8-quinolinolate) aluminum (Ⅲ) (Alq₃) as an electron-transporting layer, N,N'-diphenyl-N, N'-(3-methylphenyl)-l,l'-biphenyl-4,4'-diamine (TPD) as a hole-transporting layer.A cell structure of indium-tin-oxide/TPD/Eu-complex/Alq₃/Mg: Ag was employed. Red electroluminescence was observed at room temperature with dc bias voltage of 2 V in this cell.Red emission peaks at about 613 nm with maximum luminance of over 106 cd/m². Compared with the EL luminance from those europium complexes reported before, one from the Eu-complex is best in the same cells.
- Europium chelate,
- squaric acid,
- electroluminescence(EL),
- photoluminescence(PL)
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