Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (05): 1188-1194.doi: 10.3866/PKU.WHXB20110527

• PHOTOCHEMISTRY AND RADIATION CHEMISTRY • Previous Articles     Next Articles

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).

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