- Organic compound, polymer, organic mixture, composition and organic electronic device
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The invention relates to an organic compound, a polymer, an organic mixture, a composition and an organic electronic device. the above compound has the structure as shown in the general formula (I), wherein L1 is selected from an aromatic ring system group having 8 to 40 fused ring atoms, a substituted or unsubstituted heteroaromatic ring system group having 8 to 40 fused ring atoms, an aryloxy group having 5 to 40 ring-forming atoms, and a heteroaryloxy group having 5 to 40 ring-forming atoms. A is the structure with the general formula (II); B is the structure with the general formula (III-1) or the general formula (III-2). The above organic compound has excellent hole-transport property and stability, and can form a co-subject by cooperating with another subject with electron-transportproperty or bipolar property, and an organic luminescent device with high electroluminescent efficiency and long life can be obtained.
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Paragraph 0255; 0256; 0257; 0258
(2019/05/08)
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- Modulation of the Physicochemical Properties of Donor–Spiro–Acceptor Derivatives through Donor Unit Planarisation: Phenylacridine versus Indoloacridine—New Hosts for Green and Blue Phosphorescent Organic Light-Emitting Diodes (PhOLEDs)
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This work reports a detailed structure–property relationship study of a series of efficient host materials based on the donor–spiro–acceptor (D-spiro-A) design for green and sky-blue phosphorescent organic light-emitting diodes (PhOLEDs). The electronic and physical effects of the indoloacridine (IA) fragment connected through a spiro bridge to different acceptor units, namely, fluorene, dioxothioxanthene or diazafluorene moiety, have been investigated in depth. The resulting host materials have been easily synthesised through short, efficient, low-cost, and highly adaptable synthetic routes by using common intermediates. The dyes possess a very high triplet energy (ET) and tuneable HOMO/LUMO levels, depending on the strength of the donor/acceptor combination. The peculiar electrochemical and optical properties of the IA moiety have been investigated though a fine comparison with their phenylacridine counterparts to study the influence of planarisation. Finally, these molecules have been incorporated as hosts in green and sky-blue PhOLEDs. For the derivative SIA-TXO2as a host, external quantum efficiencies as high as 23 and 14 % have been obtained for green and sky-blue PhOLEDs, respectively.
- Thiery, Sébastien,Tondelier, Denis,Geffroy, Bernard,Jeannin, Olivier,Rault-Berthelot, Jo?lle,Poriel, Cyril
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p. 10136 - 10149
(2016/07/19)
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