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Acta Chimica Sinica ›› 2008, Vol. 26 ›› Issue (23): 2575-2578.    

Communications

含抗氧化受阻胺的三聚芴有机半导体的合成及其光谱稳定性的研究

侯晓雅a 李廷成b 梁 婧c 陈道勇a 解令海*,c 黄 维*,c

  

  1. (a复旦大学高分子科学系 上海 200433)
    (b中南民族大学化学与材料学院 催化材料科学湖北省暨国家民委-教育部共建重点实验室 武汉 430074)
    (c南京邮电大学信息材料与纳米技术研究院 江苏省有机电子与平板显示重点实验室 南京 210046)

  • 投稿日期:2008-05-09 修回日期:2008-07-28 发布日期:2008-12-14
  • 通讯作者: 黄维

Synthesis and Spectrum Stability of an Oligomeric Terfluorene Tethered with Antioxidant Hindered Amine

HOU, Xiao-Ya a LI, Ting-Cheng b LIANG, Jing c CHEN, Dao-Yong a
XIE, Ling-Hai *,c HUANG, Wei *,c
  

  1. (a Department of Macromolecular Science, Fudan University, Shanghai 200433)
    (b Key Laboratory of Catalysis and Materials Science of The State Ethnic Affairs Commission & Ministry of Education,
    South Central University for Nationalities, Wuhan 430074)
    (c Jiangsu Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials,
    Nanjing University of Posts and Telecommunication, Nanjing 210046)

  • Received:2008-05-09 Revised:2008-07-28 Published:2008-12-14
  • Contact: HUANG, Wei

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The origin of the low-energy emission band (LEEB) of fluorene-based blue electroluminescent materials has no identical conclusion. Based on keto-defect mechanism, a blending antioxidant strategy for stabilizing the organic semiconductors was previously proposed. In this communication, the antioxidant hindered amine was covalently incorporated into terfluorene to synthesize a complicated 9,9-diarylfluorene (CDAF), DF-PTMPF, in order to prohibit the fluorenone-induced LEEB. DF-PTMPF with φ of 1.4 (φ＝IGreen/IBlue) shows higher spectra stability than TDHF (φ＝2.4) after annealing for 120 h. However, DF-PTMPF initially exhibits LEEB after annealing for 24 h under N2 atmosphere, which indicates that aggregates and/or an excimer still play a crucial role in the origin of LEEB.

Key words: electroluminescence, spectrum stability, antioxidant, hindered amines, fluorene-based organic semiconductor