Condensed eight-ring aromatic compound, and organic EL element and organic EL display using the same
First Claim
1. A condensed eight-ring aromatic compound, wherein the condensed eight-ring aromatic compound has a point-symmetrical skeleton (excluding such cases in which the regions where substituents can be introduced are all hydrogen atoms),wherein the condensed eight-ring aromatic compound is represented by any of following structural formulas (1) through (3):
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where R1 through R18 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms);
where R1 through R16 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms);
where R1 through R14 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms).
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Abstract
The object of the present invention is to provide an organic EL element which utilizes a novel condensed eight-ring aromatic compound, and has high color purity of red light and excellent light-emitting efficiency, light-emitting luminance and the like. The organic EL element of the present invention has, in between a positive electrode and a negative electrode, an organic thin-film layer including a light-emitting layer. The organic thin-film layer contains the condensed eight-ring aromatic compound which has a number of regions where substituents can be introduced is any of 14, 16 and 18, and the condensed eight-ring aromatic compound has a point-symmetrical skeleton.
37 Citations
31 Claims
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1. A condensed eight-ring aromatic compound, wherein the condensed eight-ring aromatic compound has a point-symmetrical skeleton (excluding such cases in which the regions where substituents can be introduced are all hydrogen atoms),
wherein the condensed eight-ring aromatic compound is represented by any of following structural formulas (1) through (3): -
where R1 through R18 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms);
where R1 through R16 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms);
where R1 through R14 may be the same or may be different from each other, and represent hydrogen atoms or substituents (excluding cases in which all are hydrogen atoms). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An organic EL element comprising an organic thin-film layer including a light-emitting layer in between a positive electrode and a negative electrode, and the organic thin-film layer contains a condensed eight-ring aromatic compound,
wherein the condensed eight-ring aromatic compound has a point-symmetrical skeleton, wherein the condensed eight-ring aromatic compound is represented by any of following structural formulas (1) through (3): -
where R1 through R18 may be the same or may be different from each other, and represent hydrogen atoms or substituents;
where R1 through R16 may be the same or may be different from each other, and represent hydrogen atoms or substituents;
where R1 through R14 may be the same or may be different from each other, and represent hydrogen atoms or substituents. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An organic EL display comprising an organic EL element which comprises an organic thin-film layer including a light-emitting layer in between a positive electrode and a negative electrode, and the organic thin-film layer contains a condensed eight-ring aromatic compound,
wherein the condensed eight-ring aromatic compound has a point-symmetrical skeleton, wherein the condensed eight-ring aromatic compound is represented by any of following structural formulas (1) through (3): -
where R1 through R18 may be the same or may be different from each other, and represent hydrogen atoms or substituents;
where R1 through R16 may be the same or may be different from each other, and represent hydrogen atoms or substituents;
where R1 through R14 may be the same or may be different from each other, and represent hydrogen atoms or substituents. - View Dependent Claims (31)
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Specification