Dianthracenylazatrioxa[8]circulene: Synthesis, Characterization and Application in OLEDs
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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 cm2 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.
Originalsprog | Engelsk |
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Tidsskrift | Chemistry: A European Journal |
Vol/bind | 27 |
Udgave nummer | 45 |
Sider (fra-til) | 11609–11617 |
Antal sider | 10 |
ISSN | 0947-6539 |
DOI | |
Status | Udgivet - 2021 |
ID: 273587644