Synthesis, crystal structure and blue electroluminescence of a new zinc complex based on 2,6-bis(benzimidazolyl)pyridine |
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Authors: | Sheng-Gui Liu Yue Wang Xiao-Zeng You |
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Institution: | a Coordination Chemistry Institute and State Key Laboratory of Coordination Chemistry, Nanjing University, Han Kou Road, Nanjing 210093, People's Republic of China b Key Laboratory for Supramolecular Structure and Spectroscopy, Jilin University, Changchun 130023, People's Republic of China |
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Abstract: | A very stable and blue luminescent complex Zn(bbp)Cl2 (bbp: 2,6-bis(benzimidazolyl)pyridine) was synthesized. X-ray crystal structural analysis for the complex revealed that there are intermolecular π?π interactions in the solid state. The fluorescence properties for this complex were studied. The similar devices with the structure of ITO/CuPc(31 nm)/NPB(80 nm)/Zn(bbp)Cl2] (or L) (85 nm)/LiF15/Al] were constructed to investigate their electroluminescent performance. Both the complex and the ligand can be fabricated as blue-emitting materials. The complex shows emission peak at 555 nm, electroluminescent efficiency 0.017 cd A−1 and turn-on voltage 7 V, compared to 470 nm, 0.036 cd A−1 and 9 V for the ligand. |
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Keywords: | B Crystal growth D Luminescence D Electrical properties D Crystal structure |
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