A cyanine compound represented by the general formula (I), (VI) or (VII):
wherein ring-A
1
is an optionally substituted benzene or naphthalene ring; B is a group represented by the general formula (II) or (III); R
1
is a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an aryl group having 6 to 30 carbon atoms; R
2
is a substituent represented by the general formula (IV); and Y
1
is a hydrogen atom, an organic group having 1 to 30 carbon atoms, or a substituent represented by the general formula (IV):
wherein ring-A
2
is the same as the ring-A
1
in the general formula (I); Y
4
and Y
5
each are independently the same as Y
1
in the general formula (I); X
2
is the same as X
1
in the general formula (I); R
10
is the same as R
1
in the general formula (I); R
11
is the same as R
2
in the general formula (I); R
23
and R
24
are the same as R
21
and R
22
in the formulas (II) and (III); n is an integer of 0 to 6; the polymethine chain may have a substituent; An
q−
is a q-valent anion; q is 1 or 2; and p is a factor keeping the neutrality of charge.
一种青菁化合物,由通式(I),(VI)或(VII)表示:其中环-A1是一个可选取代苯或
萘环; B是由通式(II)或(III)表示的基团; R1是氢原子、卤素原子、具有1-8个碳原子的烷基、具有1-8个碳原子的烷氧基或具有6-30个碳原子的芳基; R2是由通式(IV)表示的取代基; Y1是氢原子、具有1-30个碳原子的有机基团或由通式(IV)表示的取代基:其中环-A2与通式(I)中的环-A1相同; Y4和Y5各自独立地与通式(I)中的Y1相同; X2与通式(I)中的X1相同; R10与通式(I)中的R1相同; R11与通式(I)中的R2相同; R23和R24与式(II)和(III)中的R21和
R22相同; n为0-6之间的整数; 聚甲烯链可以有取代基; Anq-是q价阴离子; q为1或2; p是保持电中性的因子。