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Intermolecular Interactions in Molecular Crystals and Their Effect on Thermally Activated Delayed Fluorescence of Helicene-Based Emitters

Klimash, Anastasia; Pander, Piotr Henryk; Klooster, Wim; Coles, Simon; Data, Przemyslaw; Dias, Fernando; Skabara, Peter

Intermolecular Interactions in Molecular Crystals and Their Effect on Thermally Activated Delayed Fluorescence of Helicene-Based Emitters Thumbnail


Authors

Anastasia Klimash

Piotr Henryk Pander

Wim Klooster

Simon Coles

Przemyslaw Data

Peter Skabara



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%.

Citation

Klimash, A., Pander, P. H., Klooster, W., Coles, S., Data, P., Dias, F., & Skabara, P. (2018). Intermolecular Interactions in Molecular Crystals and Their Effect on Thermally Activated Delayed Fluorescence of Helicene-Based Emitters. Journal of Materials Chemistry C Materials for optical and electronic devices, 6(39), 10557-10568. https://doi.org/10.1039/c8tc03390k

Journal Article Type Article
Acceptance Date Sep 11, 2018
Online Publication Date Sep 12, 2018
Publication Date Oct 21, 2018
Deposit Date Sep 14, 2018
Publicly Available Date Sep 14, 2018
Journal Journal of Materials Chemistry C Materials for optical and electronic devices
Print ISSN 2050-7526
Electronic ISSN 2050-7534
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 6
Issue 39
Pages 10557-10568
DOI https://doi.org/10.1039/c8tc03390k

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