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

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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 (T d) of 401 °C and glass-transition temperature (T g) 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%.

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Acknowledgements

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

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Authors and Affiliations

  1. College of Chemistry, Sichuan University, Chengdu, 610064, China

    Huaxi Zhang, Ying Li, Qing Jiang & Minggui Xie

  2. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, China

    Junbiao Peng & Yong Cao

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  1. Huaxi Zhang
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  2. Ying Li
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  3. Qing Jiang
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  4. Minggui Xie
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  5. Junbiao Peng
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  6. Yong Cao
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Correspondence to Huaxi Zhang.

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Zhang, H., Li, Y., Jiang, Q. et al. Novel green-emitting polymer containing fluorene and 1-(2-benzothiazolyl)-3,5-diphenylpyrazoline. J Mater Sci 42, 4476–4479 (2007). https://doi.org/10.1007/s10853-006-0234-1

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