Chin. J. Org. Chem. ›› 2018, Vol. 38 ›› Issue (1): 103-111.DOI: 10.6023/cjoc201709047 Previous Articles     Next Articles

Special Issue: 庆祝吴养洁院士九十华诞专辑



林丹燕a, 宋森川b, 陈智勇c, 郭鹏然c, 陈江韩c, 史华红b, 麦裕良b, 宋化灿a   

  1. a 中山大学化学工程与技术学院 广州 510275;
    b 广东省石油与精细化工研究院 广州 510665;
    c 中国广州分析测试中心 广州 510070
  • 收稿日期:2017-09-29 修回日期:2017-10-06 发布日期:2017-11-21
  • 通讯作者: 宋化灿
  • 基金资助:


Luminescence Properties of the Conjugated System Containing Benzoimidazole Structural Units and Its Organic Light-Emitting Diode (OLED)

Lin Danyana, Song Senchuanb, Chen Zhiyongc, Guo Pengranc, Chen Jianghanc, Shi Huahongb, Mai Yuliangb, Song Huacana   

  1. a School of Chemical Engineering and Technology, Sun Yat-Sen University, Guangzhou 510275;
    b Guangdong Petrochemical Research Institute, Guangzhou 510665;
    c China National Analysis Center of Guangzhou, Guangzhou 510070
  • Received:2017-09-29 Revised:2017-10-06 Published:2017-11-21
  • Contact: 10.6023/cjoc201709047
  • Supported by:

    Project supported by the Science and Technology Planning Project of Guangdong Province (Nos. 2017A070702017, 2017A040405040) and the Special Project of Science and Technology Development of Guangdong Academy of Sciences (No. 2017GDASCX-0104).

A series of conjugated compounds containing imidazole structure units were designed and synthesized. Their structures were characterized by 1H NMR, 13C NMR, MS and elemental analysis. Their UV absorption wavelength (λa), fluorescence emission wavelength (λe), fluorescence quantum yield (Φ) and fluorescence lifetime (τ) were determined, and the relationships between the molecular structures and its spectral data were discussed. The results showed that these compounds possess strong luminescence characteristic, and the maximum value of Φ is 91%. 1,4-Bis-(2-(1-benzylbenzimidazole))benzene (5b) was selected to fabricate organic light-emitting diode (OLED). Its main luminous peak is at 448 nm, the maximum brightness is 6790 cd•m-2 when the voltage is 23.8 V (875 mA•cm-2), the maximum current efficiency is 1.17 cd•A-1, the maximum power efficiency is 0.96 lm•W-1, and the maximum external quantum efficiency is 0.92%, which indicate that these compounds have great potential application value as OLED materials.

Key words: benzoimidazole, luminescent property, organic light-emitting diode (OLED)