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

Valentin H.K. Fell; Neil J. Findlay; Benjamin Breig; Clarissa Forbes; Anto R. Inigo; Joseph Cameron; Alexander L. Kanibolotsky; Peter J. Skabara

doi:10.1039/C8TC02993H

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

Valentin H.K. Fell
, Neil J. Findlay^*
, Benjamin Breig
, Clarissa Forbes
, Anto R. Inigo
, Joseph Cameron
, Alexander L. Kanibolotsky
, Peter J. Skabara

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

22 Downloads (Pure)

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).

Original language	English
Pages (from-to)	3934-3944
Number of pages	11
Journal	Journal of Materials Chemistry C
Volume	7
Issue number	13
DOIs	https://doi.org/10.1039/C8TC02993H
Publication status	Published - 4 Mar 2019

Funding

NJF, JC and AK thank the EPSRC for funding (EP/R03480X/1, EP/P02744X/2 and EP/N009908/2). We acknowledge the EPSRC UK National Mass Spectrometry Facility (NMSF) at Swansea University for HRMS data.

Keywords

end group functionalisation
small molecules
organic light-emitting diodes
fluorene–thiophene–benzothiadiazole motif

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10.1039/C8TC02993HLicence: CC BY 3.0

Valentin-etal-JMCC2019-Effect-end-group-functionalisation-small-molecules-featuring-fluorene-thiophene-benzothiadiazole-motifFinal published version, 2.02 MBLicence: CC BY 3.0

Cite this

Fell, V. H. K., Findlay, N. J., Breig, B., Forbes, C., Inigo, A. R., Cameron, J., Kanibolotsky, A. L., & Skabara, P. J. (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. Journal of Materials Chemistry C, 7(13), 3934-3944. https://doi.org/10.1039/C8TC02993H

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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). ",

keywords = "end group functionalisation, small molecules, organic light-emitting diodes, fluorene–thiophene–benzothiadiazole motif",

author = "Fell, \{Valentin H.K.\} and Findlay, \{Neil J.\} and Benjamin Breig and Clarissa Forbes and Inigo, \{Anto R.\} and Joseph Cameron and Kanibolotsky, \{Alexander L.\} and Skabara, \{Peter J.\}",

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doi = "10.1039/C8TC02993H",

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Fell, VHK, Findlay, NJ, Breig, B, Forbes, C, Inigo, AR, Cameron, J, Kanibolotsky, AL & Skabara, PJ 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', Journal of Materials Chemistry C, vol. 7, no. 13, pp. 3934-3944. https://doi.org/10.1039/C8TC02993H

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. / Fell, Valentin H.K.; Findlay, Neil J.; Breig, Benjamin et al.
In: Journal of Materials Chemistry C, Vol. 7, No. 13, 04.03.2019, p. 3934-3944.

Research output: Contribution to journal › Article › peer-review

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AU - Fell, Valentin H.K.

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AU - Breig, Benjamin

AU - Forbes, Clarissa

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KW - organic light-emitting diodes

KW - fluorene–thiophene–benzothiadiazole motif

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ER -

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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