Organic-inorganic composite, organic-inorganic composite composition and ink

Patent metadata

Field	Value
Publication number	US-9976079-B2
Application number	US-201213979754-A
Country	US
Kind code	B2
Filing date	Jan 18, 2012
Priority date	Jan 19, 2011
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

Provided is an organic-inorganic composite having two or more kinds of light emission sites. When the organic-inorganic composite is caused to emit light, each of emission colors in each of light emission sites is independently maintained as a emission color that is shown when each of the light emission sites is independently caused to emit light.

First claim

We claim:

1. An organic-inorganic composite having two or more kinds of light emission sites, wherein the light emission sites are complexes, and the organic-inorganic composite comprises:
metal oxide particles; and
an organic polymer compound having a polymer chain and an organic ligand which is bonded to the polymer chain through a covalent bond,
wherein the organic polymer compound is bonded to the metal oxide particles in a manner in which the organic ligand forms a complex with metal atoms on the surface of the metal oxide particles;
wherein when the organic-inorganic composite is caused to emit light, each of emission colors in each of light emission sites is independently maintained as a emission color that is shown when each of the light emission sites is independently caused to emit light;
wherein the organic-inorganic composite satisfies at least one of the following (i) to (iv),
(i) the organic polymer compound comprises two or more kinds of the organic ligand to form two or more kinds of complexes which are light emission sites;
(ii) the organic-inorganic composite comprises two or more kinds of organic-inorganic composites wherein the organic-inorganic composites have different complexes having different emission colors, and wherein the complexes have different organic ligands or metal oxide particles from each other, or have different organic ligands and metal oxide particles from each other;
(iii) the organic-inorganic composite comprises two or more kinds of the metal oxide particles to form two or more kinds of complexes which are light emission sites; and
(iv) the organic-inorganic composite comprises composite metal oxide particles which have two or more kinds of metal atoms as the metal oxide particles to form two or more kinds of complexes which are light emission sites; and

wherein the organic ligand is generated from at least one selected from (i) an organic compound which contains a phenolic hydroxyl group and a heterocyclic ring having a nitrogen atom as a heteroatom and forms a complex by using the hydroxyl group and the nitrogen, (ii) an organic compound which contains a phenolic hydroxyl group and a carbonyl group and forms a complex by using the groups, and (iii) an organic compound which has a β-diketone structure and forms a complex by using the structure.

2. The organic-inorganic composite according to claim 1 , wherein the two or more kinds of complexes which are light emission sites are separated from each other with an interval therebetween that is equal to or longer than a single-nanometer order.

3. The organic-inorganic composite according to claim 1 ,
wherein the organic polymer compound forms an inorganic dispersed phase by being crosslinked by the metal oxide particles.

4. The organic-inorganic composite according to claim 1 ,
wherein the light emission site is a complex formed of the organic ligand and the metal atoms.

5. An organic-inorganic composite composition, which generates the organic-inorganic composite according to claim 1 , the organic-inorganic composite composition comprising:
metal oxide particles; and
(i) an organic polymer compound having an organic ligand which is bonded to a polymer chain thereof through a covalent bond and has an ability to form a coordinate bond with metal atoms on the surface of the metal oxide particles; or
(ii) a monomer or oligomer forming an organic polymer compound having an organic ligand, which has an ability to form a coordinate bond with metal atoms on the surface of the metal oxide particles,
wherein at least one of (a) and (b) is satisfied:
(a) the composite composition includes two or more kinds of the metal oxide particles, and/or the metal oxide particles are composite metal oxide particles having two or more kinds of metal atoms; and
(b) the organic polymer compound has two or more kinds of the organic ligand, the composite composition includes two or more kinds of the organic polymer compound which have different organic ligands, or the composite composition includes two or more kinds of the monomer or oligomer; and

wherein the organic ligand is generated from at least one selected from (i) an organic compound containing a phenolic hydroxyl group and a heterocyclic ring having a nitrogen atom as a heteroatom and forming a complex including the hydroxyl group and the nitrogen, (ii) an organic compound containing a phenolic hydroxyl group and a carbonyl group and forming a complex including these groups, and (iii) an organic compound having a β-diketone structure and forming a complex including that structure.

6. An ink comprising:
the organic-inorganic composite composition according to claim 5 ; and
an organic solvent.

7. A method for producing an organic-inorganic composite according to claim 1 , comprising:
a first step of obtaining an organic-inorganic composite composition by mixing metal oxide particles with (i) an organic polymer compound having an organic ligand which is bonded to a polymer chain thereof through a covalent bond and has an ability to form a coordinate bond with metal atoms on the surface of the metal oxide particles and/or (ii) a monomer or oligomer forming an organic polymer compound having an organic ligand which has an ability to form a coordinate bond with metal atoms on the surface of the metal oxide particles; and
a second step of obtaining the organic-inorganic composite by curing the obtained organic-inorganic composite composition,
wherein, in the first step,
(a) two or more kinds of the metal oxide particles are used, and/or composite metal oxide particles which have two or more kinds of metal atoms are used as the metal oxide particles; and/or
(b) the organic polymer compound has two or more kinds of the organic ligand; two or more kinds of the organic polymer compound are used which have different organic ligand are used; or

two or more kinds of the monomer or oligomer are used, and
wherein the organic-inorganic composite composition generated in the first step satisfies at least one of:
(a′) the organic-inorganic composite composition includes two or more kinds of the metal oxide particles;
(b′) the metal oxide particles are composite metal oxide particles which have two or more kinds of metal atoms;
(c′) the organic polymer compound has two or more kinds of the organic ligand;
(d′) the organic-inorganic composite composition includes two or more kinds of the organic polymer compound which have different organic ligand from each other, and
(e′) the composite composition includes two or more kinds of the monomer or oligomer; and
wherein the organic ligand is generated from at least one selected from (i) an organic compound containing a phenolic hydroxyl group and a heterocyclic ring having a nitrogen atom as a heteroatom and forming a complex including the hydroxyl group and the nitrogen, (ii) an organic compound containing a phenolic hydroxyl group and a carbonyl group and forming a complex including these groups, and (iii) an organic compound having a β-diketone structure and forming a complex including that structure.

8. The method for producing an organic-inorganic composite according to claim 7 , wherein the organic-inorganic composite is a mixture which includes two or more kinds of organic-inorganic composites having different emission colors.

9. The method for producing an organic-inorganic composite according to claim 7 , wherein the organic polymer compound forms an inorganic dispersed phase by being crosslinked by the metal oxide particles.

10. The method for producing an organic-inorganic composite according to claim 7 , wherein the polymer chain has two or more kinds of the organic ligand to form two or more kinds of complexes which

Assignees

• Otsuka Takeshi
• Chujo Yoshiki
• Sumitomo Osaka Cement Co Ltd
• Univ Kyoto

Inventors

• Otsuka Takeshi
• Chujo Yoshiki

Classifications

• C09K2211/183

  of the refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta or W · CPC title

• C08L33/14

  of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09K11/025

  non-luminescent particle coatings or suspension media · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C08K5/0091

  Complexes with metal-heteroatom-bonds · CPC title