Organic-inorganic composite, composition for formation of organic-inorganic composite, and ink

Patent metadata

Field	Value
Publication number	US-9540491-B2
Application number	US-201113576571-A
Country	US
Kind code	B2
Filing date	Jan 27, 2011
Priority date	Feb 3, 2010
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

An organic-inorganic composite of the present invention includes metal oxide particles and an organic polymer compound including a monomer containing organic ligands and a vinyl-based monomer having organic ligands which are bonded to a polymer chain through covalent bonds and the organic polymer compound is bonded to the metal oxide particles by the organic ligands forming a complex with metal atoms on the surface of the metal oxide particles. According to the organic-inorganic composite, the metal oxide particles and the organic polymer compound containing the organic ligands can be chemically bonded, therefore, light emission characteristics such as light emission intensity or stabilization of light emission wavelength can be improved, and transparency and mechanical characteristics such as thermal stability or hardness can also be improved.

First claim

We claim:

1. An organic-inorganic composite, including:
metal oxide particles and an organic polymer compound containing organic ligands which are bonded to a polymer chain through covalent bonds,
wherein the organic polymer compound is bonded to the metal oxide particles by the organic ligands forming a complex with metal atoms on the surface of the metal oxide particles,
the organic ligand comprises a cyclic structure having a conjugated system or a plurality of unsaturated bonds, and
the cyclic structure is unified with moieties comprising an element having a lone pair of electrons, an oxygen atom, and a metal atom that is coordinated to both the lone pair of electrons and the oxygen atom, to form a unified cyclic complex.

2. The organic-inorganic composite according to claim 1 , wherein light is emitted by being irradiated with excitation light.

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

4. The organic-inorganic composite according to claim 2 ,
wherein the complex formed from the organic ligands and the metal atoms is a light emission site which generates the light emission.

5. The organic-inorganic composite according to claim 1 ,
wherein the metal oxide particle contains at least one element selected from the group consisting of magnesium oxide, calcium oxide, strontium oxide, barium oxide, scandium oxide, yttrium oxide, lanthanum oxide, titanium oxide, zirconium oxide, hafnium oxide, zinc oxide, aluminum oxide, gallium oxide, indium oxide, iron oxide, copper oxide, niobium oxide, tungsten oxide, lead oxide, bismuth oxide, cerium oxide, and antimony oxide.

6. The organic-inorganic composite according to claim 1 ,
wherein the organic polymer compound is a copolymer of a monomer containing organic ligands including an unsaturated group and the organic ligand which is capable of forming coordinate bonds to the metal atoms within the molecule and a vinyl-based monomer.

7. A composition for formation of an organic-inorganic composite, including:
metal oxide particles;
an organic polymer compound containing organic ligands which are bonded to a polymer chain through covalent bonds and are capable of forming coordinate bonds to metal atoms on the surface of the metal oxide particles, or a monomer or an oligomer for forming the organic polymer compound containing the organic ligands,
the organic ligand comprises a cyclic structure having a conjugated system or a plurality of unsaturated bonds, and
the cyclic structure is unified with moieties comprising an element having a lone pair of electrons, an oxygen atom, and a metal atom that is coordinated to both the lone pair of electrons and the oxygen atom, to form a unified cyclic complex.

8. The composition for formation of an organic-inorganic composite according to claim 7 , further including an organic solvent.

9. The organic-inorganic composite according to claim 2 ,
wherein the light emission is any one of blue light emission, green light emission, yellow light emission, and red light emission.

10. An ink including:
metal oxide particles;
an organic polymer compound containing organic ligands which are bonded to a polymer chain through covalent bonds and are capable of forming coordinate bonds to metal atoms on the surface of the metal oxide particles, or a monomer or an oligomer for forming the organic polymer compound containing the organic ligands; and
an organic solvent,
the organic ligand comprises a cyclic structure having a conjugated system or a plurality of unsaturated bonds, and
the cyclic structure is unified with moieties comprising an element having a lone pair of electrons, an oxygen atom, and a metal atom that is coordinated to both the lone pair of electrons and the oxygen atom, to form a unified cyclic complex.

Assignees

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

Inventors

• Otsuka Takeshi
• Chujo Yoshiki

Classifications

• C09D11/037

  characterised by the pigment · CPC title

• C08G83/001 Primary

  Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica · CPC title

• C09D11/10

  based on artificial resins · CPC title

• C08L101/02 Primary

  characterised by the presence of specified groups {, e.g. terminal or pendant functional groups} · CPC title

• C08K3/22

  of metals · CPC title