申请人:TOSOH CORPORATION
公开号:US20200354389A1
公开(公告)日:2020-11-12
To provide europium complexes having high photostability.
A europium complex expressed with the following formula (A):
wherein, R
A
and R
B
are independently a cyclic alkyl group with 3 to 10 carbons, respectively, and R
C
is a cyclic alkyl group with 3 to 10 carbons or a phenyl group expressed with the following formula (B):
(wherein, X
A
, X
B
, A
C
, X
D
and X
E
independently represent a hydrogen atom; a fluorine atom; an alkyl group with 1 to 3 carbon(s); an alkyloxy group with 1 to 3 carbon(s); an aryloxy group with 6 to 10 carbons; a fluoroalkyl group with 1 to 3 carbon(s); a fluoroalkyloxy group with 1 to 3 carbon(s); or a phenyl group that may be substituted with a fluorine atom, an alkyl group with 1 to 3 carbon(s), an alkyloxy group with 1 to 3 carbon(s), a fluoroalkyl group with 1 to 3 carbon(s), a fluoroalkyloxy group with 1 to 3 carbon(s), a fluorophenyl group, a hydroxyl group or a cyano group, respectively);
R
A
is a cyclic alkyl group with 3 to 10 carbons;
R
B
and R
C
are a phenyl group expressed with the formula (B), provided, however, that a case where R
A
a cyclohexyl group, and, R
B
and R
C
are a phenyl group is excluded; or
R
A
, R
B
and R
C
independently represent an ortho-substituted phenyl group expressed with the following formula (Ba):
(wherein, X
E
represents a hydrogen atom, an alkyl group with 1 to 3 carbon(s), an alkyloxy group with 1 to 3 carbon(s), a fluoroalkyl group with 1 to 3 carbon(s), a fluoroalkyloxy group with 1 to 3 carbon(s), a naphthyl group that may be substituted with a fluorine atom, a pyridyl group that may be substituted with a fluorine atom, or a phenyl group that is expressed with a formula (C):
[wherein, Z
A
, Z
C
and Z
E
independently represent a hydrogen atom, a fluorine atom, an alkyl group with 1 to 3 carbon(s), an alkyloxy group with 1 to 3 carbon(s), a fluoroalkyl group with 1 to 3 carbon(s), a fluoroalkyloxy group with 1 to 3 carbon(s), a phenyl group that may be substituted with a fluorine atom, a hydroxyl group or a cyano group; Z
B
and Z
D
independently represent a hydrogen atom or a fluorine atom, respectively], provided, however, that a case where R
A
, R
B
and R
C
are all a phenyl group is excluded), respectively; R
D
represents a hydrogen atom, a deuterium atom or a fluorine atom; W
A
and W
B
independently represent an alkyl group with 1 to 6 carbon(s), a fluoroalkyl group with 1 to 6 carbon(s), a phenyl group, a 2-thienyl group or a 3-thienyl group; and ‘n’ represents an integer of 1 to 3}.
提供具有高光稳定性的铕配合物。
以下是用以下公式(A)表示的铕配合物:
其中,R
A
和R
B
分别独立地是具有3至10个碳原子的环烷基基团,而R
C
是具有3至10个碳原子的环烷基基团或用以下公式(B)表示的苯基团:
(其中,X
A
、X
B
、A
C
、X
D
和X
E
独立地代表氢原子;氟原子;具有1至3个碳原子的烷基基团;具有1至3个碳原子的烷氧基团;具有6至10个碳原子的芳基氧基团;具有1至3个碳原子的氟烷基基团;具有1至3个碳原子的氟烷氧基团;或者可能被氟原子、具有1至3个碳原子的烷基基团、具有1至3个碳原子的烷氧基团、具有1至3个碳原子的氟烷基基团、具有1至3个碳原子的氟烷氧基团、氟苯基团、羟基或氰基取代的苯基团,分别);
R
A
是具有3至10个碳原子的环烷基基团;
R
B
和R
C
是用公式(B)表示的苯基团,但是,排除R
A
为环己基团,且R
B
和R
C
为苯基团的情况;或者
R
A
,R
B
和R
C
独立地表示用以下公式(Ba)表示的邻位取代的苯基团:
(其中,X
E
代表氢原子、具有1至3个碳原子的烷基基团、具有1至3个碳原子的烷氧基团、具有1至3个碳原子的氟烷基基团、具有1至3个碳原子的氟烷氧基团、可能被氟原子取代的萘基团、可能被氟原子取代的吡啶基团,或者用以下公式(C)表示的苯基团:
[其中,Z
A
、Z
C
和Z
E
独立地代表氢原子、氟原子、具有1至3个碳原子的烷基基团、具有1至3个碳原子的烷氧基团、具有1至3个碳原子的氟烷基基团、具有1至3个碳原子的氟烷氧基团、可能被氟原子取代的苯基团、羟基或氰基;Z
B
和Z
D
独立地代表氢原子或氟原子,但排除R
A
,R
B
和R
C
都是苯基团的情况),分别;R
D
代表氢原子、氘原子或氟原子;W
A
和W
B
独立地表示具有1至6个碳原子的烷基基团、具有1至6个碳原子的氟烷基基团、苯基、2-噻吩基团或3-噻吩基团;‘n’表示1至3的整数。