Highly soluble fluorine containing Cu() AlkylPyrPhos TADF complexes

Luminescent Cu( i ) AlkylPyrPhos complexes with a butterfly-shaped Cu 2 I 2 core and halogen containing ancillary ligands, with a special focus on fluorine, have been investigated in this study. These complexes show extremely high solubilities and a remarkable (photo)chemical stability in a series o...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2019, Vol.48 (41), p.15687-15698
Main Authors: Busch, Jasmin M, Zink, Daniel M, Di Martino-Fumo, Patrick, Rehak, Florian R, Boden, Pit, Steiger, Sophie, Fuhr, Olaf, Nieger, Martin, Klopper, Wim, Gerhards, Markus, Bräse, Stefan
Format: Article
Language:English
Subjects:
Atomic energy levels
Crystal structure
Crystallography
Fluorescence
Fluorine
Organic chemistry
Organic light emitting diodes
Quantum chemistry
Single crystals
Solvents
X ray analysis
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Summary:Luminescent Cu( i ) AlkylPyrPhos complexes with a butterfly-shaped Cu 2 I 2 core and halogen containing ancillary ligands, with a special focus on fluorine, have been investigated in this study. These complexes show extremely high solubilities and a remarkable (photo)chemical stability in a series of solvents. A tunable emission resulting from thermally activated delayed fluorescence with high quantum yields was determined by luminescence and lifetime investigations in solvents and solids. Structures of the electronic ground states were analyzed by single crystal X-ray analysis. The structure of the lowest excited triplet state was determined by transient FTIR spectroscopy, in combination with quantum chemical calculations. With the obtained range of compounds we address the key requirement for the production of organic light emitting diodes based on solution processing. Newly luminescent Cu( i ) AlkylPyrPhos complexes with a special focus on fluorine have been synthesized and comprehensively investigated by a variety of spectroscopic and theoretical methods.
ISSN:1477-9226
1477-9234
DOI:10.1039/c9dt02447f