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Compound Derived from Anthracene and Pyrazol for a Light-Emitting Diode |
| WANG Ming-Liang1;ZHANG Jun-Xiang1;LIU Ju-Zheng1 XU Chun-Xiang2 |
| 1Department of Chemistry and Chemical Engineering,
Southeast University, Nanjing 210096
2Department of Electronic Engineering, Southeast University, Nanjing 210096
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| Cite this article: |
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WANG Ming-Liang, ZHANG Jun-Xiang, LIU Ju-Zheng XU Chun-Xiang 2001 Chin. Phys. Lett. 18 831-833 |
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Abstract A new compound, 5-(9-anthryl)-1,3-diphenyl-1H-pyrazol (ADPP), with an anthryl moiety as an emissive group and a diphenylpyrazoline moiety as a charge transporting group is designed and synthesized. The absorption, photoluminescence, electroluminescence, and electrochemistry are measured. Absorption of ADPP is similar to that of anthracene in the vibonic structure but shows slight red shifts because anthryl moiety twists strongly with respect to pyrazol moiety although delocalization still exists between the two moieties. Light emitting devices fabricated with ADPP show a bright blue emission at 470 nm. The turn-on voltage is 12 V and the light emission follows the current closely, indicating an efficient charge injection and transport for both electrons and holes.
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| Keywords:
78.60.Fi
78.55.-m
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Published: 01 June 2001
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| PACS: |
78.60.Fi
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(Electroluminescence)
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78.55.-m
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(Photoluminescence, properties and materials)
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