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- W1987164427 abstract "Deep-blue fluorescent compounds are particularly important in organic light-emitting devices (OLEDs). A donor–accepotor (DA)-type blue-emitting compound, 1-(10-(4-methoxyphenyl)anthracen-9-yl)-4-(10-(4-cyanophenyl)anthracen-9-yl)benzene (BD3), is synthesized, and for comparison, a nonDA-type compound, 1,4-bis(10-phenylanthracene-9-yl)benzene (BD1) and a weak DA-type compound, 1-(10-phenylanthracen-9-yl)-4-(10-(4-cyanophenyl)anthracen-9-yl)-benzene (BD2), are also synthesized. The twisted conformations of the two anthracene units in the compounds, confirmed by single crystal X-ray analysis, effectively prevent π-conjugation, and the compound shows deep-blue photoluminescence (PL) with a high PL quantum efficiency, almost independent of the solvent polarity, resulting from the absence of an intramolecular charge transfer state. The DA-type molecule BD3 in a non-doped device exhibits a maximum external quantum efficiency (EQE) of 4.2% with a slight roll-off, indicating good charge balance due to the DA-type molecular design. In the doped device with 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP) host, the BD3 exhibits higher EQE than 10% with Commission International de L'Eclairge (CIE) coordinates of (0.15, 0.06) and a narrow full-width at half-maximum of 45 nm, which is close to the CIE of the high definition television standard blue." @default.
- W1987164427 created "2016-06-24" @default.
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- W1987164427 date "2013-12-04" @default.
- W1987164427 modified "2023-10-01" @default.
- W1987164427 title "Bisanthracene-Based Donor-Acceptor-type Light-Emitting Dopants: Highly Efficient Deep-Blue Emission in Organic Light-Emitting Devices" @default.
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- W1987164427 doi "https://doi.org/10.1002/adfm.201302907" @default.
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