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Journal of Materials Science

, Volume 42, Issue 12, pp 4476–4479 | Cite as

Novel green-emitting polymer containing fluorene and 1-(2-benzothiazolyl)-3,5-diphenylpyrazoline

  • Huaxi ZhangEmail author
  • Ying Li
  • Qing Jiang
  • Minggui Xie
  • Junbiao Peng
  • Yong Cao
Article

Abstract

Novel electroluminescent (EL) polymer based on fluorene having benzothiazolylpyrazoline unit in the main chain was synthesized. The result polymer possessed satisfactory thermal stability with onset decomposition temperature (Td) of 401 °C and glass-transition temperature (Tg) of 213 °C. The polymer emits green fluorescence with high photoluminescence (PL) quantum yield of 47%. Polymer light-emitting diode (PLED) was fabricated with the configuration of ITO/PEDT 40 nm/PVK 40 nm/polymer(80 nm)/Ba(4 nm)/Al(160 nm) showed turn-on voltage of 4.5 V, and it can emit green light with maximum brightness of 1726 cd m−2 with the maximum external quantum efficiency of 1.59%.

Keywords

Pyrazoline Result Polymer Polyfluorene Onset Decomposition Temperature Direct Current Bias 

Notes

Acknowledgements

This work was supported by the key foundation of education ministry of China (project NO. 105142).

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Huaxi Zhang
    • 1
    Email author
  • Ying Li
    • 1
  • Qing Jiang
    • 1
  • Minggui Xie
    • 1
  • Junbiao Peng
    • 2
  • Yong Cao
    • 2
  1. 1.College of ChemistrySichuan UniversityChengduChina
  2. 2.Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhouChina

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