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

Klimash, Anastasia and Pander, Piotr Henryk and Klooster, Wim and Coles, Simon and Data, Przemyslaw and Dias, Fernando and Skabara, Peter (2018) 'Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters.', Journal of materials chemistry C., 6 (39). pp. 10557-10568.

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%.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1039/C8TC03390K
Publisher statement:This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Date accepted:11 September 2018
Date deposited:14 September 2018
Date of first online publication:12 September 2018
Date first made open access:No date available

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