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Dianthracenylazatrioxa[8]circulene: Synthesis, Characterization and Application in OLEDs
Author(s) -
Pedersen Stephan K.,
Pedersen Viktor B. R.,
Kamounah Fadhil S.,
Broløs Line M.,
Baryshnikov Glib V.,
Valiev Rashid R.,
Ivaniuk Khrystyna,
Stakhira Pavlo,
Minaev Boris,
KaraushKarmazin Nataliya,
Ågren Hans,
Pittelkow Michael
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202100090
Subject(s) - oled , materials science , fluorescence , anthracene , characterization (materials science) , electroluminescence , photochemistry , optoelectronics , chemistry , nanotechnology , optics , layer (electronics) , physics
A soluble, green‐blue fluorescent, π‐extended azatrioxa[8]circulene was synthesized by oxidative condensation of a 3,6‐dihydroxycarbazole and 1,4‐anthraquinone by using benzofuran scaffolding. This is the first circulene to incorporate anthracene within its carbon framework. Solvent‐dependent fluorescence and bright green electroluminescence accompanied by excimer emission are the key optical properties of this material. The presence of sliding π‐stacked columns in the single crystal of dianthracenylazatrioxa[8]circulene is found to cause a very high electron‐hopping rate, thus making this material a promising n‐type organic semiconductor with an electron mobility predicted to be around 2.26 cm 2 V −1 s −1 . The best organic light‐emitting diode (OLED) device based on the dianthracenylazatrioxa[8]circulene fluorescent emitter has a brightness of around 16 000 Cd m −2 and an external quantum efficiency of 3.3 %. Quantum dot‐based OLEDs were fabricated by using dianthracenylazatrioxa[8]circulene as a host matrix material.