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Issue 39, 2018
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Intermolecular interactions in molecular crystals and their effect on thermally activated delayed fluorescence of helicene-based emitters

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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%.

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

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Supplementary files

Article information


Submitted
10 Jul 2018
Accepted
11 Sep 2018
First published
12 Sep 2018

This article is Open Access

J. Mater. Chem. C, 2018,6, 10557-10568
Article type
Paper

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

A. Klimash, P. Pander, W. T. Klooster, S. J. Coles, P. Data, F. B. Dias and P. J. Skabara, J. Mater. Chem. C, 2018, 6, 10557
DOI: 10.1039/C8TC03390K

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