Material for organic electroluminescence device and organic electroluminescence device

Patent metadata

Field	Value
Publication number	US-2016104845-A1
Application number	US-201314039539-A
Country	US
Kind code	A1
Filing date	Sep 27, 2013
Priority date	Sep 28, 2012
Publication date	Apr 14, 2016
Grant date	—

Abstract

A material for organic electroluminescence device including a specific compound having a specific group in the central skeleton and an organic electroluminescence device including an organic thin film layer between an anode and a cathode. The organic thin film layer includes a light emitting layer and at least one layer of the organic thin film layer includes the material for organic electroluminescence device. The organic electroluminescence device has a long lifetime and the material for organic electroluminescence device realizes such a device.

First claim

1 . A material for organic electroluminescence device represented by formula (I):

wherein:
each of A 1 and A 2 independently represents a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
each of B 1 and B 2 independently represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
each of X 1 to X 8 and Y 1 to Y 8 independently represents N (nitrogen group) or CR a (C: carbon group), provided that when adjacent two of X 1 to X 8 and Y 1 to Y 8 are both CR a , R a groups in adjacent CR a groups may be bonded to each other to form a ring;
R a independently represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted silyl group, or a halogen atom, and when two or more R a groups exist, the R a groups may be the same or different;
L 1 represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
n represents an integer of 0 to 3, provided that when n=0, L 1 represents a single bond, and one of X 5 to X 8 is directly bonded to one of Y 1 to Y 8 and A 2 ;
one of X 5 to X 8 is bonded to one of Y 1 to Y 8 and A 2 via L 1 or directly;
each of sa and ta independently represents an integer of 0 to 5, each of sb, tb and tc independently represents an integer of 0 to 4, and sc represents an integer of 0 to 3, provided that sa+sb+sc+ta+tb+tc represents an integer of 1 to 5;
when sa represents 1 to 5, A 1 is boned to Q 1 of (Q 1 ) sa ;
when sb represents 1 to 4, at least one of X 1 to X 4 is bonded to B 1 of (B 1 -Q 1 ) sb or Q 1 when B 1 represents a single bond;
when sc represents 1 to 3, at least one of X 5 to X 8 is bonded to B 1 of (B 1 -Q 1 ) sc or Q 1 when B 1 represents a single bond;
when ta represents 1 to 5, A 2 is bonded to Q 2 of (Q 2 ) ta ;
when tb represents 1 to 4, at least one of Y 5 to Y 8 is bonded to B 2 of (B 2 -Q 2 ) tb or Q 2 when B 2 represents a single bond;
when tc represents 1 to 4, at least one of Y 1 to Y 4 is bonded to B 2 of (B 2 -Q 2 ) tc or Q 2 when B 2 represents a single bond;
each of Q 1 and Q 2 independently represents -Az-W q ;
q represents an integer of 1 to 4;
when two or more Q 1 groups exist, the Q 1 groups may be the same or different, and when two or more Q 2 groups exist, the Q 2 groups may be the same or different;
Az represents a q+1 valent residue of a ring represented by formula (Z):

wherein:
each of Z 1 to Z 5 independently represents a nitrogen group or CR b , wherein R b is as defined above with respect to R a , provided that when adjacent two of Z 1 to Z 5 are both CR b , R b groups of adjacent CR b groups may be boned to each other to form a ring;
when two or more R b groups exist, the R b groups may be the same or different;
when two or more Az groups exist, the Az groups may be the same or different;
W represents a substituent X, a non-fused aromatic hydrocarbon group having 6 to 15 ring carbon atoms substituted with a substituent X, a fused aromatic hydrocarbon group having 12 to 30 ring carbon atoms substituted with a substituent X, or a heterocyclic group having 5 to 30 ring atoms substituted with a substituent X, provided that the aromatic hydrocarbon group having 6 to 15 ring carbon atoms substituted with a substituent X, the fused aromatic hydrocarbon group having 12 to 30 ring carbon atoms substituted with a substituent X, and the heterocyclic group having 5 to 30 ring atoms substituted with a substituent X may have a substituent other than the substituent X;
the substituent X represents an electron-withdrawing group, provided that a cyano group is excluded; and
when two or more W groups exist, the W groups may be the same or different.

2 . A material for organic electroluminescence device represented by formula (I):

wherein:
each of A 1 and A 2 independently represents a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
each of B 1 and B 2 independently represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
each of X 1 to X 8 and Y 1 to Y 8 independently represents N (nitrogen group) or CR a (C: carbon group), provided that when adjacent two of X 1 to X 8 and Y 1 to Y 8 are both CR a , R a groups in adjacent CR a groups may be bonded to each other to form a ring;
R a independently represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted silyl group, or a halogen atom, and when two or more R a groups exist, the R a groups may be the same or different;
L 1 represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
n represents an integer of 0 to 3, provided that when n=0, L 1 represents a single bond, and one of X 5 to X 8 is directly bonded to one of Y 1 to Y 8 and A 2 ;
one of X 5 to X 8 is bonded to one of Y 1 to Y 8 and A 2 via L 1 or directly;
each of sa and ta independently represents an integer of 0 to 5, each of sb, tb and tc independently represents an integer of 0 to 4, and sc represents an integer of 0 to 3, provided that sa+sb+sc+ta+tb+tc represents an integer of 1 to 5;
when sa represents 1 to 5, A 1 is boned to Q 1 of (Q 1 ) sa ;
when sb represents 1 to 4, at least one of X 1 to X 4 is bonded to B 1 of (B 1 -Q 1 ) sb or Q 1 when B 1 represents a single bond;
when sc represents 1 to 3, at least one of X 5 to X 8 is bonded to B 1 of (B 1 -Q 1 ) sc or Q 1 when B 1 represents a single bond;
when ta represents 1 to 5, A 2 is bonded to Q 2 of (Q 2 ) ta ;
when tb represents 1 to 4, at least one of Y 5 to Y 8 is bonded to B 2 of (B 2 -Q 2 ) tb or Q 2 when B 2 represents a single bond;
when tc represents 1 to 4, at least one of Y 1 to Y 4 is bonded to B 2 of (B 2 -Q 2 ) tc or Q 2 when B 2 represents a single bond;
each of Q 1 and Q 2 independently represents -Az-W q ;
q represents an integer of 1 to 4;
when two or more Q 1 groups exist, the Q 1 groups may be the same or different, and when two or more Q 2 groups exist, the Q 2 groups may be the same or diffe

Assignees

• Idemitsu Kosan Co

Inventors

• Mizuki Yumiko
• Yabunouchi Nobuhiro
• Shiomi Takushi
• Nishimura Kazuki
• Eida Mitsuru

Classifications

• H01L51/0085

  Electricity · mapped topic

• C07D403/14 Primary

  containing three or more hetero rings · CPC title

• H01L51/0067

  Electricity · mapped topic

• H01L51/0072 Primary

  Electricity · mapped topic

• H01L51/5016

  Electricity · mapped topic