| 摘要 |
Provided are an organic electroluminescent device (organic EL device) that is improved in luminous efficacy, sufficiently secures driving stability, and has a simple construction, and a material for organic EL devices to be used in the organic EL device. The material for organic EL devices is a material for organic EL devices formed of an ortho-carborane compound having a structure in which a silyl group (—SiR3) is bonded to a divalent ortho-carborane group represented by C2B10H10 through an aromatic group. In addition, the organic electroluminescent device is an organic electroluminescent device having a structure in which an anode, an organic layer, and a cathode are laminated on a substrate, the device having an organic layer containing the ortho-carborane compound, and the organic layer being a light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. |
| 主权项 |
1. A material for organic electroluminescent devices, comprising an ortho-carborane compound represented by the general formula (1): where a ring A represents a divalent ortho-carborane group C2B10H10 represented by the formula (1a), L1 and L2 each independently represent a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 30 carbon atoms, or a linked aromatic group formed by linking 2 to 6 aromatic rings selected from the aromatic hydrocarbon group and the aromatic heterocyclic group, when L1 or L2 represents the linked aromatic group, the group may be linear or branched, and the aromatic rings to be linked may be identical to or different from each other, and L1 represents a p+1-valent group and L2 represents a q+1-valent group, R1, R2, R3, R4, R5, and R6 each independently represent an aliphatic hydrocarbon group having 1 to 12 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 17 carbon atoms, R7 and R8 each independently represent hydrogen, an aliphatic hydrocarbon group having 1 to 12 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 17 carbon atoms, p represents an integer of from 1 to 5, q represents an integer of from 0 to 5, and r represents an integer of from 1 to 4. |
