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Citation: XIANG Neng-Jun, GONG Meng-Lianb, LEUNG Louis-M. Synthesis,Device Fabrication and Luminescence of a Small Organic Molecule Emitting Blue-Light[J]. Chinese Journal of Applied Chemistry, ;2008, 25(1): 53-57. shu

Synthesis,Device Fabrication and Luminescence of a Small Organic Molecule Emitting Blue-Light

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a Research branch of R & D Center of Hongta Tobacco(GROUP) CO., LTD, Yunnan 653100;
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b State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275;
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c Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong SAR, China

Corresponding author: XIANG Neng-Jun,
Received Date: 17 February 2007
Available Online: 18 June 2007
Fund Project: 广东省科技计划项目(B10502) (B10502)

A novel organic compound substituted with hole transporting arylamine and electron transporting 1,3,4-oxadiazole moieties was designed and synthesized via facile multistep reactions with a high yield.The compound is N-phengyl-N-(4-(5-(4-biphenyl)-1,3,4-oxadiazol-2-yl)phenyl)benzenamine,PBPOPB).The compound emits intensive blue light with a high fluorescence quantum yield of 87% under~365 nm light excitation.Cyclic voltammetry results imply the compound has good hole-transporting and electro-transporting properties.TG analysis shows a high heat-stability of the compound.Preliminary study on the electroluminescence of the fluorescent dye prepared via vacuum evaporation indicates that the compound has potential for the production of organic light emitting diodes(OLED).The maximum luminance for the blue light emitting OLEDs with single layered homojunction reached 2 800 cd/m²,whereas for double layered heterojunction OLEDs,the best result was more than 16,750 cd/m².All the results indicate that the synthesized compound with electron-transporting/hole-transporting unit is a good blue light-emitting material and hole-transporting material for fabrication of organic light-emitting diodes.
- organic small molecule,
- hole-transporting,
- electro-transporting,
- organic-electroluminescence
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