Light-emitting device, condensed polycyclic compound used therein and method for producing same
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsMasaaki Ikeda, Takaaki Kurata, Teppei Tsuchida, Chihaya Adachi
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Abstract
The device according to the invention is a device having organic thin films containing a light-emitting layer between an anode and a cathode that emits light by application of electric energy, characterized in that the light-emitting device contains at least a compound having the basic skeleton represented by the following General Formula (1) or (2). Use of the condensed polycyclic compound according to the invention allows production of high-brightness, high-efficiency light-emitting device superior in color purity.
Claims18
A light-emitting device emitting light by electric energy having one or more layers of organic thin films formed between an anode and a cathode, characterized in that the organic thin film contains a compound represented by the following General Formula (3) or (4):
- (wherein, X1, X2, X3 and X4 each independently represent an oxygen, sulfur, selenium, or tellurium atom, or NR29;
- and R29 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may be substituted with at least one group selected from the group consisting of a halogen atom, phenyl, biphenyl, naphthyl, pyridino, thienyl, and furyl groups, and phenyl, biphenyl, naphthyl, pyridino, thienyl, or furyl groups which may be substituted with at least one group selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, a halogen atom, and phenyl, biphenyl, naphthyl, pyridino, thienyl, and furyl groups;
- R1 to R28 each independently represent a hydrogen atom;
- a halogen atom;
- an alkyl group having 1 to 6 carbon atoms which may be substituted with at least one group selected from the group consisting of a halogen atom, phenyl, biphenyl, naphthyl, pyridino, thienyl, and furyl groups;
- and a phenyl, biphenyl, naphthyl, pyridino, thienyl, or furyl group which may be substituted with at least one group selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, a halogen atom, and phenyl, biphenyl, naphthyl, pyridino, thienyl, and furyl groups, and the neighboring groups among the substituent groups represented by R1 to R14 and R29 in Formula (3) and R15 to R29 in Formula (4) may bind to each other to form a benzene or naphthalene ring).
A condensed polycyclic compound represented by Formula (5):
- (wherein, R30 to R43 each independently represent a hydrogen atom;
- a halogen atom;
- an aromatic residue which may be substituted with a halogen atom;
- at least one of R31, R33, R38 and R40 is a phenyl which may be substituted with a halogen atom;
- and R30 and R31, and, R37 and R38, or, R32 and R33, and, R39 and R40, may bind to each other forming benzene ring(s), however excluding the case where R30 and R31 and R37 and R38, or R32 and R33 and R39 and R40, bind to each other forming unsubstituted benzene rings and all of R30 to R43 that do not form a ring are a hydrogen atom).
A condensed polycyclic compound represented by Formula (6):
- (wherein, R44 to R57 each independently represent a hydrogen atom, a halogen atom, a C1-C6 alkyl group, or a phenyl group;
- at least one of R45, R47, R52, and R54 is a C1-C6 alkyl group, or a phenyl group).
A condensed polycyclic compound represented by the following General Formula (7):
- (wherein, X3 and X4 each independently represent an oxygen, R58 to R71 each represent a hydrogen atom, or a phenyl;
- at least one of R59, R61, R64, and R66 represents a phenyl group.
Dependencies are inferred from the claim text.