1233192-79-4Relevant academic research and scientific papers
NEAR-INFRARED-RAY ABSORBING MATERIAL CONTAINING CYANINE COMPOUND, AND CYANINE COMPOUND
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Page/Page column 31, (2011/10/13)
A near-infrared-ray absorbing material of the disclosure containing a cyanine compound represented by general formula (I) exhibits a sharp light absorption in the wavelength range between 800 and 1000 nm and has excellent light resistance. In formula (I), R1 to R4, Y1, and Y2 represent a hydrogen atom, a group represented by formula (II) or (II'), etc.; Anq- represents a q-valent anion; at least either R1 is a group represented by formula (II) or (II') or Anq- is an ion represented by formula (III); R11 to R13 represent a hydrogen atom, a hydroxyl group, etc.; and Z1 and Z2 represent a C1-10 alkyl group, etc. In formula (II'), the bond between G' and T' is a double bond or a conjugated double bond; G' represents a carbon atom; T' represents a carbon atom or a nitrogen atom; the ring containing G' and T' represents a 6-membered ring, etc.; w' represents 0 to 4; and R01' represents a hydrogen atom, a hydroxyl group, etc. In formula (III), R5 and R6 represent a halogen-substituted C1-8 alkyl group.
