Issue 39, 2018

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

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

Supplementary files

Article information

Article type
Paper
Submitted
10 Qad 2018
Accepted
11 Way 2018
First published
12 Way 2018
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2018,6, 10557-10568

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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