Issue 13, 2019

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

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

Supplementary files

Article information

Article type
Paper
Submitted
18 jun 2018
Accepted
28 feb 2019
First published
04 mar 2019
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2019,7, 3934-3944

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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