Benzoselenophenylpyridine platinum complexes: green versus red phosphorescence towards hybrid OLEDs

The first examples of phosphorescent platinum complexes bearing 2- and 3-(2-pyridyl)benzo[b]selenophenes (PyBSe) were synthesized and fully characterized. Almost identical ionization potential values (5.6 and 5.58 eV) of the solid samples of the Pt complexes were obtained by electron photoemission s...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2020-03, Vol.49 (11), p.3393-3397
Main Authors: Petrenko, Alla, Leitonas, Karolis, Volyniuk, Dmytro, Baryshnikov, Gleb V, Belyakov, Sergey, Minaev, Boris F, Ågren, Hans, Durgaryan, Hranush, GraŽulevičius, Juozas Vidas, Arsenyan, Pavel
Format: Article
Language:English
Subjects:
Crystallography
Ionization potentials
NMR
Nuclear magnetic resonance
Phosphorescence
Photoelectric emission
Platinum
Solid solutions
Spectrum analysis
Synthesis
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Summary:The first examples of phosphorescent platinum complexes bearing 2- and 3-(2-pyridyl)benzo[b]selenophenes (PyBSe) were synthesized and fully characterized. Almost identical ionization potential values (5.6 and 5.58 eV) of the solid samples of the Pt complexes were obtained by electron photoemission spectroscopy. Having slightly different molecular design, the solid solutions of the complexes emitted efficient green and red phosphorescence with absolute quantum yields of 52% (for green) and 11.6% (for red). It is demonstrated that the platinum complexes synthesized can be used as phosphorescent dopants for hybrid solution-processable OLEDs.
ISSN:1477-9226
1477-9234
1477-9234
DOI:10.1039/d0dt00214c