US2008303429A1PendingUtilityA1
Green luminescent materials
Est. expiryJun 1, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:Norman HerronMark A. GuidryVsevolod RostovtsevJeffrey A. MerloKalindi DograVictoria J. North
C09K 11/06C09K 2211/1007C09K 2211/1014C09K 2211/1011H10K 85/633H10K 85/615H10K 85/626H10K 50/11H10K 85/341H10K 85/324H10K 2102/103
50
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Claims
Abstract
There is provided a green luminescent material having Formula I or Formula II R 1 and R 2 can be the same or different and can be hydrogen, alkoxy, tertiary alkyl, or cycloalkyl. R 3 and R 4 are the same or different and can be fluorine, aryl, or alkyl. There is also provided an organic electronic device containing the green luminescent material.
Claims
exact text as granted — not AI-modified1 . A green luminescent material having Formula I or Formula II
wherein:
R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen, alkoxy, tertiary alkyl, and cycloalkyl.
R 3 and R 4 are the same or different and are selected from the group consisting of fluorine, aryl, and alkyl.
2 . The luminescent material of claim 1 , wherein at least one of R 1 and R 2 is not hydrogen.
3 . The luminescent material of claim 1 , wherein at least one of R 1 and R 2 is an alkoxy group selected from the group consisting of methoxy and ethoxy.
4 . The luminescent material of claim 1 , wherein at least one of R 1 and R 2 is a tertiary alkyl group selected from the group consisting of t-butyl and neopentyl.
5 . The luminescent material of claim 1 , wherein at least one of R 1 and R 2 is a cycloalkyl selected from the group consisting of cyclohexyl, 1-methylcyclohexyl, and 1-adamantyl.
6 . The luminescent material of claim 1 , selected from the group consisting of compounds G1 through G12:
Compound
Formula
R 1
R 2
R 3
R 4
G1
I
H
H
i-propyl
t-butyl
G2
I
t-butyl
H
i-propyl
t-butyl
G3
I
t-butyl
t-butyl
i-propyl
t-butyl
G4
I
1-
1-
i-propyl
t-butyl
methylcyclohexyl
methylcyclohexyl
G5
II
1-
1-
i-propyl
t-butyl
methylcyclohexyl
methylcyclohexyl
G6
I
methoxy
methoxy
i-propyl
t-butyl
G7
I
1-adamantyl
1-adamantyl
i-propyl
t-butyl
G8
II
1-adamantyl
1-adamantyl
i-propyl
t-butyl
G9
I
t-butyl
t-butyl
F
F
G10
I
1-adamantyl
1-adamantyl
phenyl
phenyl
G11
I
1-adamantyl
1-adamantyl
t-butyl
3-biphenyl
G12
I
1-adamantyl
1-adamantyl
t-butyl
phenyl
7 . An organic electronic device comprising a first electrical contact, a second electrical contact and a photoactive layer therebetween, the photoactive layer comprising a green luminescent material having Formula I or Formula II
wherein:
R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen, alkoxy, tertiary alkyl, and cycloalkyl.
R 3 and R 4 are the same or different and are selected from the group consisting of fluorine, aryl, and alkyl.
8 . The device of claim 7 , wherein at least one of R 1 and R 2 is not hydrogen.
9 . The device of claim 7 , wherein at least one of R 1 and R 2 is an alkoxy group selected from the group consisting of methoxy and ethoxy.
10 . The device of claim 7 , wherein at least one of R 1 and R 2 is a tertiary alkyl group selected from the group consisting of t-butyl and neopentyl.
11 . The device of claim 7 , wherein at least one of R 1 and R 2 is a cycloalkyl selected from the group consisting of cyclohexyl, 1-methylcyclohexyl, and 1-adamantyl.
12 . The device of claim 7 , wherein the luminescent material is selected from the group consisting of compounds G1 through G12:
Compound
Formula
R 1
R 2
R 3
R 4
G1
I
H
H
i-propyl
t-butyl
G2
I
t-butyl
H
i-propyl
t-butyl
G3
I
t-butyl
t-butyl
i-propyl
t-butyl
G4
I
1-
1-
i-propyl
t-butyl
methylcyclohexyl
methylcyclohexyl
G5
II
1-
1-
i-propyl
t-butyl
methylcyclohexyl
methylcyclohexyl
G6
I
methoxy
methoxy
i-propyl
t-butyl
G7
I
1-adamantyl
1-adamantyl
i-propyl
t-butyl
G8
II
1-adamantyl
1-adamantyl
i-propyl
t-butyl
G9
I
t-butyl
t-butyl
F
F
G10
I
1-adamantyl
1-adamantyl
phenyl
phenyl
G11
I
1-adamantyl
1-adamantyl
t-butyl
3-biphenyl
G12
I
1-adamantyl
1-adamantyl
t-butyl
phenyl
13 . The device of claim 7 , wherein the photoactive layer further comprises a host material.
14 . The device of claim 13 wherein the host material comprises at least one diarylanthracene.
15 . The device of claim 14 wherein the diarylanthracene has the formula:
where:
A 1 and A 2 are the same or different at each occurrence and are selected from the group consisting of H, an aromatic group, and an alkenyl group, or A may represent one or more fused aromatic rings;
p and q are the same or different and are an integer from 1-3.
16 . The device of claim 15 wherein at least one of A 1 and A 2 comprises a naphthyl group.
17 . The device of claim 16 wherein the host is selected from the group consisting of
and combinations thereof.
18 . A photoactive layer comprising a green luminescent material of claim 1 .
19 . The photoactive layer of claim 18 further comprising a host material comprising at least one diarylanthracene.Cited by (0)
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