Abstract:
A first object is to provide an organometallic complex capable of exhibiting phosphorescence. In General Formula (G1), at least one substituent of R11 to R14 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. At least one substituent of R15 to R19 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. R20 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 4 to 10 carbon atoms. M is either a Group 9 element or a Group 10 element. When M is a Group 9 element, n is 3, and when M is a Group 10 element, n is 2.
Abstract translation:第一个目的是提供能够显示出磷光的有机金属络合物。 在通式(G1)中,R11至R14的至少一个取代基表示卤素基团,具有1至4个碳原子的卤代烷基和氰基中的任一个。 R 15〜R 19中的至少一个取代基表示卤素基,碳原子数1〜4的卤代烷基和氰基中的任一个。 R 20表示碳原子数1〜6的烷基,碳原子数5〜8的环烷基,碳原子数6〜12的芳基,碳原子数4〜10的杂芳基中的任一种。 M为9族元素或10族元素。 当M为9族元素时,n为3,M为10族时,n为2。
Abstract:
A quinoxaline derivative expressed by the general formula (1) is provided. (Each of R1 to R12 represents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an acyl group, a dialkyl amino group, a diarylamino group, a substituted or unsubstituted vinyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocycle group. Ar1 represents one of a substituted or unsubstituted biphenyl group and a substituted or unsubstituted terphenyl group, and Ar2 represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group.)
Abstract:
It is an object of the present invention to obtain an organometallic complex that is capable of converting an excited triplet state into luminescence, a light-emitting element that can be driven for a long time, is high in luminous efficiency, and has a favorable long lifetime, and a light-emitting device using the light-emitting element. The present invention provides a light-emitting element that has a pair of electrodes (an anode and a cathode) and a light-emitting layer between a pair of electrodes, where the light-emitting layer includes an organometallic complex represented by the following general formula (5) and one of a compound that has a larger energy gap than the organometallic complex and a compound that has a larger ionization potential and a smaller electron affinity than the organometallic complex, and provides a light-emitting device using the light-emitting device.
Abstract:
A material which can emit phosphorescence is disclosed. Further, a light-emitting element having good chromaticity is disclosed. An embodiment of the present invention is an organometallic complex including a structure as represented by the general formula (1): wherein R1 represents an alkyl group having 1 to 4 carbon atoms; each of R2 to R5 represents any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; Ar represents an aryl group or a heterocyclic group, preferably, an aryl group having an electron withdrawing group or a heterocyclic group having an electron withdrawing group; and M represents a Group 9 element or a Group 10 element. By virtue that the Ar has an electron withdrawing group, an organometallic complex which emits phosphorescence with higher emission intensity can be obtained.
Abstract:
An organometallic complex having a structure represented by the general formula (G1) is synthesized and applied to a light-emitting element. In the formula, R3 represents either an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkoxycarbonyl group having 1 to 5 carbon atoms; R2 and R3 each show either hydrogen or an alkyl group 1 to 4 carbon atoms; Ar represents an arylene group having 6 to 25 carbon atoms; M is a center metal selected from Group 9 element and Group 10 element.
Abstract:
To provide a light-emitting element with high light emission efficiency, a long lifetime, and reduced driving voltage. To provide a light-emitting element including an anode, a cathode, and a plurality of light-emitting layers which are in contact with each other so that a stacked structure is formed, between the anode and the cathode, in which the plurality of light-emitting layers are formed with a first light-emitting layer which is close to the anode and a second light-emitting layer which is close to the cathode, the first light-emitting layer and the second light-emitting layer each include a host material, a hole-transporting material, and a light-emitting material, and the concentration of the hole-transporting material in the first light-emitting layer is higher than the concentration of the hole-transporting material in the second light-emitting layer.
Abstract:
A light-emitting element having high emission efficiency and long lifetime is provided. By manufacturing a light-emitting device using the light-emitting element, the light-emitting device having low power consumption and long lifetime is provided. The light-emitting element is manufactured in which a light-emitting layer is included between a first electrode serving as an anode and a second electrode serving as a cathode. The light-emitting layer includes a first organic compound having a hole-transporting property, a second organic compound having an electron-transporting property, and an organometallic complex including a dibenzo[f,h]quinoxaline skeleton as a ligand. Further, a light-emitting device is manufactured using the light-emitting element.
Abstract:
In a general formula (1), each of R1 and R2 represents any one of hydrogen, an alkyl group, a halogen group, —CF3, an alkoxy group, and an aryl group. M represents an element that belongs to Group 9 or Group 10. Here, an alkyl group having 1 to 4 carbon atoms is preferable in the alkyl group. A fluoro group is particularly preferable in the halogen group. An alkoxy group having 1 to 4 carbon atoms is preferable in the alkoxy group. A phenyl group is particularly preferable in the aryl group. Iridium is particularly preferable among the elements that belong to Group 9, and platinum is particularly preferable among the elements that belong to Group 10. The general formula (1) is inserted.
Abstract:
The present invention provides a novel organometallic complex which emits green phosphorescence so as to enrich variations of phosphorescent materials for green color which is one of three primary colors. An organometallic complex comprising a structure represented by a general formula (G1) is provided. In the formula, R1 represents an alkyl group having 1 to 4 carbon atoms, and R2 and R3 individually represent hydrogen or an alkyl group having 1 to 4 carbon atoms. In addition, R4 to R7 individually represent an electron-withdrawing group, hydrogen or an alkyl group having 1 to 4 carbon atoms. Note that at least one of R4 to R7 represents an electron-withdrawing group. In addition, M is a central metal and represents either an element belonging to Group 9 in the periodic table or an element belonging to Group 10 in the periodic table.
Abstract:
It is an object of the present invention to provide a substance capable of emitting phosphorescence. In addition, it is an object of the present invention to provide a light-emitting element that is excellent in chromaticity. One aspect of the present invention is an organometallic complex having a structure represented by a general formula (1). In the general formula (1), R1 to R4 are each any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group. In addition, R5 to R13 are each any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group. An organometallic complex having such a structure can emit phosphorescence with higher emission intensity.