JP2012007038A5 - - Google Patents

Claims (7)

A near-infrared absorbing dye characterized by being represented by the following general formula (1).

[In general formula (1),
R ¹ and R ² each independently represents a heterocyclic group which may have a substituent.
X ¹ and X ^2, each independently represents a monovalent group having at least one atom for a total of 4 or more selected from the group consisting of carbon atom, oxygen atom, nitrogen atom and a silicon atom, X ¹ and X ² may be bonded to each other via a linking group.
M represents a metal atom.
The benzene ring A may have a substituent R ^f which may be different from each other in addition to X ¹ , and adjacent R ^f may be bonded via a linking group, and bonded to form a condensed ring. May be formed.
When R ^f is bonded to each other to form a condensed ring, m is an integer of 0 to 4, and when R ^f is bonded to form a condensed ring, the condensed ring is an arbitrary ring. It may have a monovalent substituent.
The benzene ring B may have a substituent R ^g which may be different from each other in addition to X ² , and adjacent R ^gs may be bonded via a linking group, and bonded to form a condensed ring. May be formed.
When R ^g is bonded to form a condensed ring, n is an integer of 0 to 4. When R ^g is bonded to form a condensed ring, the condensed ring is an arbitrary ring. It may have a monovalent substituent. ] Near infrared absorbing dye represented by the general formula (1) is, near infrared absorption according to claim 1, characterized in that the near infrared absorbing dye represented by the following general formula (2a) or (2b) Pigment.

[In the general formulas (2a) and (2b),
R ³ represents a thienyl group which may have a substituent.
R ^a represents a linear or branched alkyl group having 3 to 10 carbon atoms.
R ^b represents a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group, or a linear or branched alkoxy group having 1 to 6 carbon atoms (provided that when R ^b is a branched alkoxy group, R ^b is the same group as OR ^a ).
M ¹ represents a metal atom. ] The near-infrared absorbing dye according to claim 1 or 2, wherein the maximum absorption wavelength is in the range of 850 nm to 1200 nm. It contains the near-infrared absorbing dye according to any one of claims 1 to 3 , and further contains a second near-infrared absorbing dye having a maximum absorption wavelength in the range of 750 nm to 1200 nm. A near-infrared absorbing dye-containing adhesive. Maximum absorption wavelength, a wavelength shorter than the near infrared absorbing dye according to any one of claims 1 to claim 3 which is contained in the pressure-sensitive adhesive, and the maximum absorption wavelength is in the range of 750nm~950nm The near-infrared absorbing dye-containing pressure-sensitive adhesive according to claim 4 , further comprising a second near-infrared absorbing dye. 6. A near-infrared absorption filter comprising a layer of the near-infrared-absorbing dye-containing pressure-sensitive adhesive according to claim 4 or 5 . A near-infrared absorbing dye represented by the following general formula (1) and a second near-infrared absorbing dye having a maximum absorption wavelength in the range of 750 nm to 950 nm. Pigment mixture for absorption filters.

[In general formula (1),
R ¹ and R ² each independently represents a heterocyclic group which may have a substituent.
X ¹ and X ^2, each independently represents a monovalent group having at least one atom for a total of 4 or more selected from the group consisting of carbon atom, oxygen atom, nitrogen atom and a silicon atom, X ¹ and X ² may be bonded to each other via a linking group.
M represents a metal atom.
The benzene ring A may have a substituent R ^f which may be different from each other in addition to X ¹ , and adjacent R ^f may be bonded via a linking group, and bonded to form a condensed ring. May be formed.
When R ^f is bonded to each other to form a condensed ring, m is an integer of 0 to 4, and when R ^f is bonded to form a condensed ring, the condensed ring is an arbitrary ring. It may have a monovalent substituent.
The benzene ring B may have a substituent R ^g which may be different from each other in addition to X ² , and adjacent R ^gs may be bonded via a linking group, and bonded to form a condensed ring. May be formed.
When R ^g is bonded to form a condensed ring, n is an integer of 0 to 4. When R ^g is bonded to form a condensed ring, the condensed ring is an arbitrary ring. It may have a monovalent substituent. ]