COMPOUND HAVING π-ELECTRON CONJUGATED UNIT AND CARBAZOLE GROUP
To provide a novel compound capable of enhancing luminous efficiency and further excellent in light stability when used as a material for a luminous layer such as an organic light-emitting element.SOLUTION: There is provided a compound containing one or more benzene ring, 2 or more carbazole groups...
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Zusammenfassung: | To provide a novel compound capable of enhancing luminous efficiency and further excellent in light stability when used as a material for a luminous layer such as an organic light-emitting element.SOLUTION: There is provided a compound containing one or more benzene ring, 2 or more carbazole groups bound to a benzene ring of a π-electron conjugated unit (A) satisfying following 1) and/or 2), in which all carbazole groups have CFgroups at 3 position and 6 position. 1) a substituent (E) with position substituent constant of Hammett σbinds to the π-electron conjugated unit (A). 2) the π-electron conjugated unit (A) further has an aromatic hydrocarbon ring or an aromatic heterocyclic ring in addition to the benzene rings and -CO-, -SO-, or -SF- binds to the benzene rings and the aromatic hydrocarbon ring or the aromatic heterocyclic ring.SELECTED DRAWING: None
【課題】有機発光素子などの発光層の材料として用いたときに、発光効率を高めることができ、しかも光安定性に優れる新規の化合物を提供する。【解決手段】1つ以上のベンゼン環を含み、下記1)及び/又は2)を満足するπ電子共役単位(A)のベンゼン環に2つ以上のカルバゾール基が結合しており、該カルバゾール基の全てが、3位及び6位にCF3基を有していることを特徴とする化合物。1)ハメットの置換基定数σparaが正となる置換基(E)が前記π電子共役単位(A)に結合している。2)前記π電子共役単位(A)が前記ベンゼン環に加えて更に芳香族炭化水素環又は芳香族性複素環を有し、−CO−、−SO2−、又は−CF2−が前記ベンゼン環と前記芳香族炭化水素環又は芳香族性複素環とを連結している。【選択図】なし |
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