Patent ID: 9716238
Date: 2017-07-25
CPC Classifications: C07F,C09B,C09K,H01L

Claim:
1. A boron compound for an organic electroluminescent device, which is represented by the following general formula (1) or (2): wherein, in formula (1), L in formula (2), Z represents a boron-containing group represented by the formula (1a); in formula (1a), A's each independently represents hydrogen, deuterium, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an alkynyl group having 2 to 12 carbon atoms, an alkoxyl group having 1 to 12 carbon atoms, a hydroxyl group, chlorine, bromine, fluorine, 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, and when A represents an alkyl group, an alkenyl group, an alkynyl group, an alkoxyl group, an aromatic hydrocarbon group, or an aromatic heterocyclic group, the groups adjacent to each other or substituents of the groups are optionally bonded to each other to form a ring, and the ring is optionally a heterocycle containing B or is optionally a fused ring; in formulae (1) and (2), Y's each independently represents an indolocarbazolyl group represented by the following formula (1 b): wherein, ring I of formula (1b) represents an aromatic hydrocarbon ring represented by the formula (1c), which fuses with an adjacent ring at an arbitrary position, ring II of formula (1b) represents a heterocycle represented by the formula (1d), which fuses with an adjacent ring at an arbitrary position, and L Z of formula (1d) has the same meaning as that of Z in the general formula (2), and when a plurality of Z's exist, the plurality of Z's are identical to or different from each other; R of formulae (1 b) and (1c) represents deuterium, an alkyl group having 1 to 12 carbon atoms, an aralkyl group having 7 to 19 carbon atoms, an alkenyl group having 2 to 12 carbon atoms, an alkynyl group having 2 to 12 carbon atoms, a cyano group, a dialkylamino group having 2 to 24 carbon atoms, a diarylamino group having 6 to 36 carbon atoms, a diaralkylamino group having 14 to 38 carbon atoms, an amino group, a nitro group, an acyl group having 2 to 12 carbon atoms, an alkoxycarbonyl group having 2 to 12 carbon atoms, a carboxyl group, an alkoxyl group having 1 to 12 carbon atoms, an alkylsulfonyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12 carbon atoms, a hydroxyl group, an amide group, a phenoxy group, an alkylthio group having 1 to 12 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 18 carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 3 to 17 carbon atoms, or a boron-containing group represented by the formula (1a); l and m each independently represents an integer of from 0 to 4, and n represents an integer of from 0 to 2; and a and b each represents an integer of 0 or 1, and c represents an integer of from 0 to 5, provided that in the general formula (1), l+m+n+a+c≧1, and in the general formula (2), l+m+n+b+c≧1, and when a+c or b+c equals 0, at least one R represents a boron-containing group represented by the formula (1a), and when l, m, n, b, or c represents 2 or more, a plurality of R's or Z's are identical to or different from each other.