Color material dispersion liquid, composition, film, optical filter and display device
AssigneeDai Nippon Printing Co., Ltd.
InventorsMasato Okada, Hiroko Amano, Tomoki Murata, Fumiyasu Murakami
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Abstract
A color material dispersion liquid including a color material, which is a salt-forming compound of an organic dye with a heteropolyoxometalate, a dispersant and a solvent, wherein the organic dye is at least one organic dye selected from the group consisting of a porphyrin dye, a tetraazaporphyrin dye, a phthalocyanine dye and a squarylium dye, and wherein the heteropolyoxometalate is a heteropolyoxometalate which has an oxidation-reduction potential larger than −0.3 V relative to the silver/silver chloride electrode.
Claims12
A color material dispersion liquid comprising:
- a color material, the color material being a salt-forming compound of an organic dye with a heteropolyoxometalate;
- a dispersant, and
- a solvent,
- wherein the heteropolyoxometalate has an oxidation-reduction potential larger than −0.3 V relative to a silver/silver chloride electrode, and
- wherein the salt-forming compound is a compound of formula (3):
- where X1 and X2 each independently represent an aromatic ring group optionally containing a substituent;
- Y represents a divalent hydrocarbon group that the carbon atom directly bound to X1 or X2 does not have a π bond;
- Z+ represents an organic cation group;
- e represents an integer of from 1 to 4;
- and when e is 2 or more, a plurality of Ys and a plurality of may be each the same or different;
- Ac− represents a heteropolyoxometalate anion which is a c-valent anion and which has an oxidation-reduction potential larger than −0.3 V relative to the silver/silver chloride electrode;
- f and c are each an integer of 2 or more;
- g is an integer of 1 or more;
- and the salt-forming compound is a normal salt that f×e=c×g.
A composition comprising:
- a color material, the color material being a salt-forming compound of an organic dye with a heteropolyoxometalate, and
- a binder component,
- wherein the heteropolyoxometalate has an oxidation-reduction potential larger than −0.3 V relative to a silver/silver chloride electrode, and
- wherein the salt-forming compound is a compound of formula (3):
- where X1 and X2 each independently represent an aromatic ring group optionally containing a substituent;
- Y represents a divalent hydrocarbon group that the carbon atom directly bound to X1 or X2 does not have a π bond;
- Z+ represents an organic cation group;
- e represents an integer of from 1 to 4;
- and when e is 2 or more, a plurality of Ys and a plurality of may be each the same or different;
- Ac− represents a heteropolyoxometalate anion which is a c-valent anion and which has an oxidation-reduction potential larger than −0.3 V relative to the silver/silver chloride electrode;
- f and c are each an integer of 2 or more;
- g is an integer of 1 or more;
- and the salt-forming compound is a normal salt that f×e=c×g.
An optical filter comprising a color material, wherein the color material being a salt-forming compound of an organic dye with a heteropolyoxometalate,
- wherein the heteropolyoxometalate has an oxidation-reduction potential larger than −0.3 V relative to a silver/silver chloride electrode, and
- wherein the salt-forming compound is a compound of formula (3):
- where X1 and X2 each independently represent an aromatic ring group optionally containing a substituent;
- Y represents a divalent hydrocarbon group that the carbon atom directly bound to X1 or X2 does not have a π bond;
- Z+ represents an organic cation group;
- e represents an integer of from 1 to 4;
- and when e is 2 or more, a plurality of Ys and a plurality of may be each the same or different;
- AC− represents a heteropolyoxometalate anion which is a c-valent anion and which has an oxidation-reduction potential larger than −0.3 V relative to the silver/silver chloride electrode;
- f and c are each an integer of 2 or more;
- g is an integer of 1 or more;
- and the salt-forming compound is a normal salt that f×e=c×g.
Dependencies are inferred from the claim text.