Back to results
US 8,507,900 B2Granted
Benzofluoranthene derivative and organic electroluminescence element comprising same
AssigneeIdemitsu Kosan Co., Ltd.
InventorYumiko Mizuki
Life of this patent
Estimating the term…
Abstract
A benzofluoranthene derivative represented by the following formula (1): wherein at least one pair of “R1 and R2” and “R3 and R4” is bonded together to form a ring represented by the following formula (2):
Claims3
An organic electroluminescence device comprising one or more organic thin layers comprising an emitting layer, between a cathode and an anode, wherein
- at least one of the organic thin layers comprises a material for an organic electroluminescence comprising a benzofluoranthene derivative represented by the following formula (1):
- wherein B1 to B3 are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom;
- a is an integer of 0 to 4, b and c are independently an integer of 0 to 5,
- when a is 2 or more, B1s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring,
- when b is 2 or more, B2s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring,
- when c is 2 or more, B3s may be the same or different, and they may be bonded together to form a saturated or unsaturated ring,
- Ar2 and Ar3 are independently a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms,
- R1 to R4 are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxy group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom;
- at least one pair of “R1 and R2” and “R3 and R4” is bonded together to form a ring represented by the following formula (2),
- when both “R1 and R2” and “R3 and R4” form a ring, the rings may be the same or different,
- wherein A1 to A4 are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a carboxy group, or a halogen atom;
- among A1 to A4, adjacent groups may be bonded to form a saturated or unsaturated ring, and the ring may have a substituent, and
- X1 to X4 are independently a carbon atom or a nitrogen atom, and when any one of X1 to X4 is a nitrogen atom, A1 to A4 which bond to the one of X1 to X4 do not exist.
10 more elements
Dependencies are inferred from the claim text.