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Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance

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Abstract

A series of phosphine oxide-functionalized polyfluorene derivatives, PFH-PO-40-1 (P1), PFH-PO-20-1 (P2), PFH-PO-10-1 (P3), and PFH-PO-1-1 (P4), were prepared via a palladium-mediated Suzuki cross-coupling reaction. The structures and purities of all polymers were fully characterized by 1H and 13C NMR, UV-vis and photoluminescent spectroscopy, gel permeation chromatography, and TGA/DSC. Their emission features showed single broad peaks at about 445 nm in film, compared with those in dilute solutions, which might be caused by some degree of aggregation in the excited states of the backbones. The best electroluminescence (EL) performance of these polymers with configuration of ITO/PEDOT:PSS/Polymer/Alq3/LiF/Al was obtained from P1 (current efficiency was 4.2 Cd/A at 6V).

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Authors and Affiliations

  1. Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China

    ZengShan Guo, Cheng Wang & Jian Pei

  2. Information Surfaces Lab, Hewlett Packard Labs, Hewlett Packard Company, 1501 Page Mill Road, Palo Alto, CA, 94304, USA

    ZhangLin Zhou, LiHua Zhao, Gary Gibson, James Brug & Sity Lam

  3. Lawrence Berkeley National Laboratory and Department of Mechanical Engineering, University of California, Berkeley, CA, USA

    DeAng Liu & Samuel S. Mao

Authors
  1. ZengShan Guo
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  2. DeAng Liu
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  3. Cheng Wang
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  4. Jian Pei
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  5. ZhangLin Zhou
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  6. LiHua Zhao
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  7. Gary Gibson
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  8. James Brug
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  9. Sity Lam
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  10. Samuel S. Mao
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Correspondence to Jian Pei, ZhangLin Zhou or Samuel S. Mao.

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Guo, Z., Liu, D., Wang, C. et al. Phosphine oxide-functionalized polyfluorene derivatives: Synthesis, photophysics, electrochemical properties, and electroluminescence performance. Sci. China Chem. 54, 678–684 (2011). https://doi.org/10.1007/s11426-011-4249-3

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  • DOI: https://doi.org/10.1007/s11426-011-4249-3

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