Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (3): 602.

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Synthesis and Electroluminescent Properties of Novel Hyperbranched Poly(fluorene-co-pyrido[3,2-b]pyrazine)s

ZHOU Peng*, WANG Jing-Yu, LI Xiao-Dong   

  1. College of Chemical Engineering and Environment, North University of China, Taiyuan 030051, China
  • Received:2009-06-02 Online:2010-03-10 Published:2010-03-10
  • Contact: ZHOU Peng. E-mail: zhoupengcm@163.com

Abstract:

Several novel hyperbranched conjugated polymers with pyrido[3,2-b]pyrazine as core and 9,9-dioctylfluorene as branches were synthesized based on a novel tribrominated pyrido[3,2-b]pyrazine. The hyperbranched polymers exhibit good solubility in common organic solvents such as toluene and tetrahydrofuran. The polymer light-emitting devices with architecture of ITO/PEDOT/polymer/Ca/Al were fabricated by utilizing the prepared copolymers as emissive layer. The device with PFPQ-2 as active layer exhibited very efficient blue electroluminescence with the maximal external quantum efficiency of 1.29% and maximal brightness of 1173 cd/m2, with CIE coordinates of (0.16, 0.11).

Key words: Hyperbranched copolymer; Blue emission; Polymer light emitting diode

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