Organic electroluminescent element, material for organic electroluminescent element, and light emitting device, display device and illumination device each using the element

Patent metadata

Field	Value
Publication number	US-9412963-B2
Application number	US-201213677759-A
Country	US
Kind code	B2
Filing date	Nov 15, 2012
Priority date	Nov 16, 2011
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

The disclosure relates to organic electroluminescent elements, materials for use in the elements, and devices using the elements, which include a compound represented by the following General Formula (1):

where R 1 to R 12 each independently represents a hydrogen atom or a substituent and which may be bound to each other to form a non-aromatic ring, where Z 1 to Z 4 each independently represents a hydrogen atom or a substituent, and where Z 1 and Z 2 , and Z 3 and Z 4 may be bound to each other to form a ring.

First claim

The invention claimed is:

1. An organic electroluminescent element comprising:
a substrate;
a pair of electrodes including an anode and a cathode, disposed on the substrate; and
at least one organic layer including a light emitting layer, disposed between the electrodes,
wherein the organic layer includes a compound represented by the following General Formula (2),

wherein, in General Formula (2), R 1 to R 12 each independently represents a hydrogen atom or a substituent and which may be bound to each other to form a non-aromatic ring,
wherein L 1 represents a divalent or higher linking group,
W 1 represents O, S, CY 8 Y 9 or NY 6 where Y 6 , Y 8 and Y 9 each independently represent an alkyl group, a silyl group, an aryl group or a heteroaryl group, and which may further have substituents,
wherein Z 3 and Z 4 each independently represent a hydrogen atom or a substituent,
wherein L 1 and W 1 , and Z 3 and Z 4 may be bound to each other to form a ring,
wherein DG represents a donor group,
wherein n represents an integer of 1 or 2,
wherein m represents 0 or 1 such that when m is 0, L 1 and W 1 are not bound to each other.

2. The organic electroluminescent element according to claim 1 , wherein the compound represented by the General Formula (2) is a compound represented by the following General Formula (3),

wherein, in General Formula (3), R 1 to R 12 each independently represents a hydrogen atom or a substituent which may be bound to each other to form a non-aromatic ring,
wherein L 1 and L 2 each independently represents a divalent or higher linking group,
wherein W 1 and W 2 each independently represents O, S, CY 8 Y 9 or NY 6 where Y 6 , Y 8 and Y 9 each independently represents an alkyl group, a silyl group, an aryl group or a heteroaryl group, and which may further have substituents,
wherein L 1 and W 1 , and L 2 and W 2 may be bound to each other to form a ring,
wherein DG represents a donor group,
wherein n represents an integer of 1 or 2, and
wherein m and p represent an integer of 0 or 1 such that when m or p is 0, L 1 and W 1 , and L 2 and W 2 are not bonded to each other.

3. The organic electroluminescent element according to claim 1 , wherein, in the General Formula (2), the donor group represents —NY 1 Y 2 , —OY 3 or SY 4 where Y 1 to Y 4 each independently represents an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, or the donor group is represented by the following General Formula (A)

wherein, in General Formula (A), X 1 and X 2 each independently represents O, S or NY 5 , R 13 to R 15 each independently represents a hydrogen atom, an alkyl group, a silyl group, an aryl group, a heteroaryl group, —NY 1 Y 2 , —OY 3 or —SY 4 where Y 1 to Y 5 each independently represents an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents.

4. The organic electroluminescent element according to claim 2 , wherein in the General Formula (3) L1 and L2 each independently represents an arylene group or a heteroarylene group.

5. The organic electroluminescent element according to claim 2 , wherein in the General Formula (3) L 1 and L 2 are each independently represented by any one of the following General Formulae (4) to (7) where a substituent with a Hammett substituent constant σ p value of 0.1 or more is not included in the linking groups represented by the Formulae (4) to (7),

wherein, in General Formula (4), A 1 to A 4 each independently represents CY 7 or N and may be condensed in A 1 and A and form an aromatic ring, Y 7 represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, W 1 is bound to A 4 when m in the General Formula (2) is 1, and W 1 and W 2 are bound to A 4 when m and p in the General Formula (3) each independently represents 1,

wherein, in General Formula (5), A 5 to A 10 each independently represents CY 7 or N, Y 7 represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, W 1 is bound to A 5 or A 10 when min the General Formula (2) is 1, and W 1 and Ware bound to A 5 or A 10 when m and p in the General Formula (3) each independently represents 1,

wherein, in General Formula (6), X 3 and X 5 each independently represents O, S or NY 6 , X 4 and X 6 each independently represents CY 7 or N, Y 6 and Y 7 each independently represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, and m and p in the General Formulae (2) or (3) are 0,

wherein, in General Formula (7), X 7 and X 10 each independently represents O, S or NY 6 , X 8 and X 9 each independently represents CY 7 or N, Y 6 and Y 7 each independently represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, R 16 and R 17 each independently represents a hydrogen atom, a fluorine atom, an alkyl group, a silyl group, an aryl group, a heteroaryl group, —NY 1 Y 2 , —OY 3 or —SY 4 where Y 1 to Y 4 each independently represent an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, and m and p in the General Formula (2) or (3) are 0.

6. The organic electroluminescent element according to claim 1 , wherein the compound represented by the General Formula (2) is a compound represented by any one of the following General Formulae (8) to (11),

wherein, in General Formula (8), R 1 to R 12 each independently represents a hydrogen atom or a substituent and which may be bound to each other to form a non-aromatic ring, A 1 to A 4 each independently represent CY 7 or N and may be condensed in A 1 and A 2 and form an aromatic ring, Y 7 represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents, Y 1 and Y 2 each independently represents an alkyl group, an aryl group or a heteroaryl group, and which may further have substituents and may be bound to each other to form a ring, W 1 represents O, S, CY 8 Y 9 or NY 6 where Y 6 , Y 8 and Y 9 each independently represents an alkyl group, a silyl group, an aryl group or a heteroaryl group, and which may further have substituents, Z 3 and Z 4 each independently represents a hydrogen atom or a substituent, A 4 and W 1 , and Z 3 and Z 4 may be bound to each other to form a ring, and m represents 0 or 1 where A 4 and W 1 are not bound to each other when m is 0,

wherein, in General Formula (10), R 1 to R 12 each independently represents a hydrogen a

Assignees

• Udc Ireland Ltd

Inventors

• Takaku Koji
• Yonekuta Yasunori
• Youfu Katsuyuki
• Sotoyama Wataru
• OUYANG Tianhua
• Kitamura Tetsu
• Watanabe Toru

Classifications

• C07C211/61 Primary

  with at least one of the condensed ring systems formed by three or more rings · CPC title

• C07F7/0814

  said ring is substituted at a C ring atom by Si · CPC title

• H01L51/0061

  Electricity · mapped topic

• C07D401/10

  linked by a carbon chain containing aromatic rings · CPC title

• C07C2103/50

  Chemistry & Metallurgy · mapped topic