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Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (5): 808.doi:

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Preparation and Photoluminescence of a Novel Bipolar Small Organic Molecular Compound and Its Al3+ Complex

XIANG Neng-Jun 1,2, LEE Tik-Ho2, LEUNG Louis M2, SO Shu Kong 3,
SHI Jian-Xin1 , GONG Meng-Lian1*   

  1. 1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yatsen University, Guangzhou 510275, China;
    2. Department of Chemistry, 3. Department of Physics, Hong Kong Baptist University, Hong Kong, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-05-10 Published:2006-05-10

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Abstract:

A novel organic compound containing an holetransporting arylamine group and an electron-transporting 1,3,4-oxadiazole unit, 2-(5-(4-(diphenylamino)phenyl)-1,3,4-oxadiazol-2-yl)phenol(HPOT), was designed and synthesized by using facile multi-steps reactions with a high yield. With this synthesized-compound as the ligand, a new aluminum(Ⅲ) complex, tri(2-(5-(4(diphenylamino)phenyl)-1,3,4-oxadiazol-2-yl)phenonate) aluminum, (AlPOT), was synthesized. Photoluminescence measurements showed that these two compounds emit intensely blue light under near-ultraviolet excitation with high fluorescence quantum yields of 0.76 and 0.68, respectively, while TG analysis confirmed their high heatstability, indicating that they are high efficient bluelight-emitting materials. All the results provide a basic knowledge for fabrication of corresponding organic lightemitting diodes.

Key words: Small organic molecular compound; Hole-transporting; Electron-ransporting; Luminescence

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