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Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters

Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters
Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters
Here, we discuss the influence of the crystal structure on the photophysical properties of two new TADF emitters containing a non-planar helical moiety. The presence of solvent in the crystal lattice of a diaza[5]helicene-based compound alters molecular packing significantly and suppresses aggregation. This results in more intense TADF emission and an increase in PLQY. Solution-processed OLED devices gave a maximum external quantum efficiency of 7.1%.
2050-7526
10557-10568
Kilmarsh, Anastasia
5c948d05-c985-4960-bd51-4ae1b2095da6
Pander, Piotr
d9a6279b-51e0-4d38-852d-37d848c2cd01
Klooster, Wim
64dc0111-f415-4226-9189-45764c0933d9
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Przemyslaw, Data
65fb03e9-c82b-495d-a25b-dd801daf75a0
Data, Fernando B.
27fe08d2-4fcf-4ba8-aeaa-07eee0ece7a8
Skabara, Peter J.
bd458a7b-ca16-47a7-828e-1e35db28ae95
Kilmarsh, Anastasia
5c948d05-c985-4960-bd51-4ae1b2095da6
Pander, Piotr
d9a6279b-51e0-4d38-852d-37d848c2cd01
Klooster, Wim
64dc0111-f415-4226-9189-45764c0933d9
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Przemyslaw, Data
65fb03e9-c82b-495d-a25b-dd801daf75a0
Data, Fernando B.
27fe08d2-4fcf-4ba8-aeaa-07eee0ece7a8
Skabara, Peter J.
bd458a7b-ca16-47a7-828e-1e35db28ae95

Kilmarsh, Anastasia, Pander, Piotr, Klooster, Wim, Coles, Simon J., Przemyslaw, Data, Data, Fernando B. and Skabara, Peter J. (2018) Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters. Journal of Materials Chemistry C, 2018 (6), 10557-10568. (doi:10.1039/C8TC03390K).

Record type: Article

Abstract

Here, we discuss the influence of the crystal structure on the photophysical properties of two new TADF emitters containing a non-planar helical moiety. The presence of solvent in the crystal lattice of a diaza[5]helicene-based compound alters molecular packing significantly and suppresses aggregation. This results in more intense TADF emission and an increase in PLQY. Solution-processed OLED devices gave a maximum external quantum efficiency of 7.1%.

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More information

Accepted/In Press date: 11 September 2018
e-pub ahead of print date: 12 September 2018
Published date: 21 October 2018

Identifiers

Local EPrints ID: 425555
URI: http://eprints.soton.ac.uk/id/eprint/425555
ISSN: 2050-7526
PURE UUID: 5dd6ec45-8934-4076-b450-6044344ad7df
ORCID for Simon J. Coles: ORCID iD orcid.org/0000-0001-8414-9272

Catalogue record

Date deposited: 24 Oct 2018 16:30
Last modified: 22 Nov 2021 02:44

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Contributors

Author: Anastasia Kilmarsh
Author: Piotr Pander
Author: Wim Klooster
Author: Simon J. Coles ORCID iD
Author: Data Przemyslaw
Author: Fernando B. Data
Author: Peter J. Skabara

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