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Issue 13, 2019
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Effect of end group functionalisation of small molecules featuring the fluorene–thiophene–benzothiadiazole motif as emitters in solution-processed red and orange organic light-emitting diodes

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Abstract

A series of red fluorescent materials (compounds 1–4), which each contain the symmetric fluorene–thiophene–BT–thiophene–fluorene core, is presented along with their performance in solution-processed OLED devices. Extending the molecular conjugation through end-capping with additional fluorene units (compound 2), or through incorporation of donor functionalities (compounds 3 and 4) improves OLED performance relative to the parent compound 1. Notably, incorporating triphenylamine donor groups in compound 3 led to solution-processed OLED devices operating with a peak luminance of 2888 cd m−2 and a low turn-on voltage (3.6 V).

Graphical abstract: Effect of end group functionalisation of small molecules featuring the fluorene–thiophene–benzothiadiazole motif as emitters in solution-processed red and orange organic light-emitting diodes

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Publication details

The article was received on 18 Jun 2018, accepted on 28 Feb 2019 and first published on 04 Mar 2019


Article type: Paper
DOI: 10.1039/C8TC02993H
J. Mater. Chem. C, 2019,7, 3934-3944
  • Open access: Creative Commons BY license
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    Effect of end group functionalisation of small molecules featuring the fluorene–thiophene–benzothiadiazole motif as emitters in solution-processed red and orange organic light-emitting diodes

    V. H. K. Fell, N. J. Findlay, B. Breig, C. Forbes, A. R. Inigo, J. Cameron, A. L. Kanibolotsky and P. J. Skabara, J. Mater. Chem. C, 2019, 7, 3934
    DOI: 10.1039/C8TC02993H

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