Abstract: It is an object to provide a noble anthracene derivative, a light emitting element with a high luminous efficiency, and further a light emitting element with a long lifetime. It is another object to provide a light emitting device and electronic device with a long lifetime by using the light emitting element. An anthracene derivative represented by General Formula (1) is provided. Since the anthracene derivative represented by General Formula (1) has a high luminous efficiency, when the anthracene derivative is used for a light emitting element, the light emitting element can have a high luminous efficiency. Further, when the anthracene derivative represented by General Formula (1) is used for a light emitting element, the light emitting element can have a long lifetime.

Abstract: An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, ?1 to ?4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.

Abstract: A novel stilbene derivative is provided with motivation of providing a blue emissive material showing excellent color purity. The use of the stilbene derivative of the present invention allows the fabrication of a blue-emissive light-emitting element with excellent color purity. The invention also includes an electronic device equipped with a display portion in which the stilbene derivative is employed. The stilbene derivative of the present invention is represented by formula (1), in which Ar1 and Ar2 may form a 5-membered ring by being directly bonded to each other. In formula (1), A11 represents any one of substituents represented by general formulas (1-1) to (1-3). The variables shown in formula (1) and (1-1) to (1-3) are as defined in the specification.

Abstract: A carbazole derivative represented by the general formula (1) is provided. In the formula, Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; ? and ? independently represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms which form a ring; R1 represents an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring; and R11 to R17 and R21 to R28 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring.

Abstract: A novel anthracene derivative represented by General Formula (1) is provided, which enables the production of a light-emitting element with high luminous efficiency and a long lifetime. A high-performance light-emitting device and electronic device in which the anthracene derivative is employed are also disclosed. The anthracene derivative of the present invention is represented by General Formula (1), in which the unit A represents any one of substituents represented by General Formulae (1-1) to (1-3). The variables shown in Formulae (1) and (1-1) to (1-3) are defined in the specification.

Abstract: A novel stilbene derivative is provided with motivation of providing a blue emissive material showing excellent color purity. The use of the stilbene derivative of the present invention allows the fabrication of a blue-emissive light-emitting element with excellent color purity. The invention also includes an electronic device equipped with a display portion in which the stilbene derivative is employed. The stilbene derivative of the present invention is represented by formula (1), in which Ar1 and Ar2 may form a 5-membered ring by being directly bonded to each other. In formula (1), A11 represents any one of substituents represented by general formulas (1-1) to (1-3). The variables shown in formula (1) and (1-1) to (1-3) are as defined in the specification.

Abstract: A novel anthracene derivative represented by General Formula (1) is provided, which enables the production of a light-emitting element with high luminous efficiency and a long lifetime. A high-performance light-emitting device and electronic device in which the anthracene derivative is employed are also disclosed. The anthracene derivative of the present invention is represented by General Formula (1), in which the unit A represents any one of substituents represented by General Formulae (1-1) to (1-3). The variables shown in Formulae (1) and (1-1) to (1-3) are defined in the specification.

Abstract: A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; ? represents a substituted or unsubstituted naphthyl group; ? represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

Abstract: Novel aromatic amine compounds are provided. Light-emitting elements having high emission efficiency and high reliability are provided. Further, light-emitting devices and electronic devices using the light-emitting devices are provided. Specifically, an aromatic amine compound represented by the general formula (1), and light-emitting elements, light-emitting devices and electronic devices that are formed using the aromatic amine compound represented by the general formula (1) are provided. By using the aromatic amine compound represented by the general formula (1) for light-emitting elements, light-emitting devices and electronic devices, the light-emitting elements, light-emitting devices and electronic devices can have high emission efficiency.

Abstract: Novel anthracene derivatives, novel materials capable of blue light emission with high color purity, and a light-emitting element, a light-emitting device, and an electronic device using any of the novel materials. The anthracene derivative represented by general formula (1) is provided. With the anthracene derivative, a light-emitting element with high emission efficiency can be provided. With the anthracene derivative, a light-emitting element emitting blue light with high color purity can be provided. In the formula, A1 represents a substituted or unsubstituted phenyl group, B1 represents any of an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted phenyl group, ? represents any of a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyl-4,4?-diyl group, and R1 to R9 individually represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted phenyl group.

Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, ?1, ?2, ?3, and ?4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.

Abstract: The present invention provides a quinoxaline derivative rerpesented by a general formula (G1). In the formula, ?1 and ?2 each independently represent an arylene group which has 13 or less carbon atoms forming a ring; Ar represents an aryl group which has 13 or less carbon atoms forming a ring; R1 and R6 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an aryl group which has 13 or less carbon atoms forming a ring; and R2 to R5 and R7 to R10 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group.

Abstract: The present invention provides light-emitting devices having excellent characteristics and electronic devices having excellent characteristics, having such light-emitting devices. Specifically, the present invention provides a light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element which emit light having different color from each other.

Abstract: It is an object to provide a light-emitting element with high luminous efficiency by using a hole transporting substance with a sufficiently high T1 level. Further, it is another object to provide a light-emitting device and an electronic appliance with low power consumption by using a hole transporting substance with a sufficiently high T1 level. The present invention provides a light-emitting element which has a first layer containing a spiro-9,9?-bifluorene derivative in which one amino group is combined and a second layer containing a phosphorescent compound between an anode and a cathode.

Abstract: A novel anthracene derivative represented by General Formula (1) is provided, which enables the production of a light-emitting element with high luminous efficiency and a long lifetime. A high-performance light-emitting device and electronic device in which the anthracene derivative is employed are also disclosed. The anthracene derivative of the present invention is represented by General Formula (1), in which the unit A represents any one of substituents represented by General Formulae (1-1) to (1-3). The variables shown in Formulae (1) and (1-1) to (1-3) are defined in the specification.

Abstract: A novel stilbene derivative is provided with motivation of providing a blue emissive material showing excellent color purity. The use of the stilbene derivative of the present invention allows the fabrication of a blue-emissive light-emitting element with excellent color purity. The invention also includes an electronic device equipped with a display portion in which the stilbene derivative is employed. The stilbene derivative of the present invention is represented by formula (1), in which Ar1 and Ar2 may form a 5-membered ring by being directly bonded to each other. In formula (1), A11 represents any one of substituents represented by general formulas (1-1) to (1-3). The variables shown in formula (1) and (1-1) to (1-3) are as defined in the specification.

Abstract: It is an object to provide a noble anthracene derivative, a light emitting element with a high luminous efficiency, and further a light emitting element with a long lifetime. It is another object to provide a light emitting device and electronic device with a long lifetime by using the light emitting element. An anthracene derivative represented by General Formula (1) is provided. Since the anthracene derivative represented by General Formula (1) has a high luminous efficiency, when the anthracene derivative is used for a light emitting element, the light emitting element can have a high luminous efficiency. Further, when the anthracene derivative represented by General Formula (1) is used for a light emitting element, the light emitting element can have a long lifetime.