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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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Publication details

The article was received on 10 Jul 2018, accepted on 11 Sep 2018 and first published on 12 Sep 2018


Article type: Paper
DOI: 10.1039/C8TC03390K
Citation: J. Mater. Chem. C, 2018, Advance Article
  • Open access: Creative Commons BY-NC license
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    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, Advance Article , DOI: 10.1039/C8TC03390K

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