物理化学学报 >> 2011, Vol. 27 >> Issue (05): 1188-1194.doi: 10.3866/PKU.WHXB20110527

光化学和辐射化学 上一篇    下一篇

苯基取代聚苯撑乙烯的合成及其电致发光性能

莫越奇1, 常学义2, 胡苏军3, 韩绍虎3, 吴宏滨3, 彭俊彪3   

  1. 1. 华南理工大学材料科学与工程学院, 广州 510640;
    2. 广州砺剑光电材料科技有限公司, 广州 510730;
    3. 华南理工大学高分子光电材料及器件研究所, 广州 510640
  • 收稿日期:2010-11-25 修回日期:2011-03-15 发布日期:2011-04-28
  • 通讯作者: 莫越奇, 吴宏滨 E-mail:moyueqi@263.net; hbwu@scut.edu.cn
  • 基金资助:

    国家自然科学基金(20674021)和高等学校博士学科点专项科研基金新教师基金课题(20090172120012)资助项目

Synthesis and Electroluminescent Properties of Phenyl-Substituted Poly(phenylenevinylene)

MO Yue-Qi1, CHANG Xue-Yi2, HU Su-Jun3, HAN Shao-Hu3, WU Hong-Bin3, PENG Jun-Biao3   

  1. 1. Key Laboratory of Special Functional Materials, South China University of Technology, Guangzhou 510640, P. R. China;
    2. Canton Oledking Optoelectronic Materials Co., Ltd., Guangzhou 510730, P. R. China;
    3. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
  • Received:2010-11-25 Revised:2011-03-15 Published:2011-04-28
  • Contact: MO Yue-Qi, WU Hong-Bin E-mail:moyueqi@263.net; hbwu@scut.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20674021) and the Specialized Research Fund for the Doctoral Program of Higher Education, China (20090172120012).

摘要:

聚苯撑乙烯(PPV)类聚合物是优异的发光材料, 有望作为全色显示中三基色的材料之一得到应用. 我们采用2-溴-1,4-亚二甲苯二乙酯为原料, 合成了商品名为Supper Yellow PPV (SY PPV)的苯基取代PPV. 中间体、单体和聚合物的结构都通过核磁共振、元素分析进行了表征. SY PPV的吸收峰在434 nm, 吸收边在510 nm, 带隙2.44 eV. 光致发光峰值和电致发光峰值分别在516和552 nm. SY PPV的器件性能为: 启动电压为2.4 V, 最大亮度大于49000 cd·m-2, 最大流明效率为21 cd·A-1, 显著优于采用老方法合成SY PPV的最大流明效率(16-18 cd·A-1).

关键词: 聚苯撑乙烯, 苯基取代聚苯撑乙烯, 绿色发光聚合物, 聚合物发光二极管, 电致发光

Abstract:

Poly(phenylenevinylene) (PPV) is one of the most efficient electroluminescent conjugated polymers and has the potential to be commercialized as important components in full-color flat panel displays. Here, we report an alternative synthetic route to the commercially available PPV derivative Super Yellow PPV (SY PPV) using 2-bromo-1,4-xylylene diacetate as a novel starting material. The intermediates, monomers, and the polymer were fully characterized by nuclear magnetic resonance (NMR) and elemental analysis. The SY PPV film shows an absorption maximum at 434 nm and an absorption onset at 510 nm with an optical bandgap of ca 2.44 eV. The photoluminescent and electroluminescent maximum of SY PPV are around 516 and 552 nm, respectively. The SY PPV obtained via this new synthetic route exhibits improved electroluminescent properties, a turn on voltage of over 2.4 V, a luminance maximum exceeding 49000 cd·m-2, and a maximum luminous efficiency (LE) of 21 cd·A-1 compared with the SY PPV prepared by the traditional route (16-18 cd·A-1).

Key words: Polyphenylenevinylene, Phenyl-substituted polyphenylenevinylene, Green light emitting polymer, Polymer light-emitting device, Electroluminescence

MSC2000: 

  • O644