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Issue 11, 2018
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Novel efficient blue and bluish-green light-emitting polymers with delayed fluorescence

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Abstract

We developed a novel highly efficient blue-light-emitting polymer (P0) containing the alternating electron-deficient diphenylsulfone and the electron-rich 4-octyloxy-aniline moieties, which was synthesized by a palladium catalyzed C–N coupling reaction. Photophysical and light-emitting device characterization confirmed the delayed fluorescence mechanism of this copolymer. A polymer light-emitting diode based on P0 exhibited pure blue emission with CIE coordinates of (0.16, 0.10), which has a maximum external quantum efficiency of 5.3%. In addition, a series of color-tunable polymers that exhibit delayed fluorescence with light emission ranging from sky blue to bluish green and improved efficiency were developed by incorporating a ditriphenylamine-functionalized triazine unit. Our strategy represents a novel approach for the construction of polymers with delayed fluorescence and high efficiency.

Graphical abstract: Novel efficient blue and bluish-green light-emitting polymers with delayed fluorescence

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Publication details

The article was received on 05 Sep 2017, accepted on 16 Feb 2018 and first published on 16 Feb 2018


Article type: Communication
DOI: 10.1039/C7TC04064D
Citation: J. Mater. Chem. C, 2018,6, 2690-2695
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    Novel efficient blue and bluish-green light-emitting polymers with delayed fluorescence

    Y. Hu, W. Cai, L. Ying, D. Chen, X. Yang, X. Jiang, S. Su, F. Huang and Y. Cao, J. Mater. Chem. C, 2018, 6, 2690
    DOI: 10.1039/C7TC04064D

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