Light-modulating material, light-modulating film, and light-modulating laminate

Patent metadata

Field	Value
Publication number	US-11479716-B2
Application number	US-201716316336-A
Country	US
Kind code	B2
Filing date	Jul 21, 2017
Priority date	Jul 22, 2016
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A light-modulating material of which the light transmittance can be controlled over a wide region from visible light to infrared light by voltage application is provided. The light-modulating material comprises a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less.

First claim

The invention claimed is:

1. A light-modulating material comprising a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less,
wherein the graphene-like carbon material is a graphene or a laminate of graphene sheets,
wherein a surface of the graphene-like carbon material is modified with an organic functional group represented by the following Formula 14,

wherein R 1 and R 2 each are carbon of the aromatic ring in the graphene-like carbon material, R 1 to R 5 each are carbon of an aromatic ring or a heterocyclic ring in a group having an aromatic ring or a heterocyclic ring, n is 0 or 1, and m is the number of the organic functional groups.

2. The light-modulating material according to claim 1 , wherein the graphene-like carbon material has a dimension in a plane direction of 1 nm or more and 100 nm or less.

3. The light-modulating material according to claim 1 , wherein the organic functional group is a functional group represented by the following Formula 15,

wherein R 1 and R 2 each are carbon of the aromatic ring in the graphene-like carbon material, R 6 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group (having an alkyl group having 1 to 20 carbon atoms), a cyano group, a nitro group, an amino group, or an acylamino group, and m is the number of organic functional groups.

4. The light-modulating material according to claim 1 , wherein the organic functional group is a functional group represented by the following Formula 18,

wherein R 1 and R 2 each are carbon of the aromatic ring in the graphene-like carbon material, R 7 and R 8 each are a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group (having an alkyl group having 1 to 20 carbon atoms), a cyano group, a nitro group, an amino group, or an acylamino group, and m is the number of organic functional groups.

5. The light-modulating material according to claim 1 , wherein the modification ratio by the functional groups is 5% or more.

6. A light-modulating film comprising the light-modulating material according to claim 1 .

7. A light-modulating laminate comprising:
a first support,
a first conductive film disposed on the first support,
the light-modulating film according to claim 6 disposed on the first conductive film,
a second conductive film disposed on the light-modulating film, and
a second support disposed on the second conductive film.

8. The light-modulating laminate according to claim 7 , having an electrolyte layer disposed between the light-modulating film and the second conductive film.

9. The light-modulating laminate according to claim 7 , wherein the first and the second supports are glass substrates.

Assignees

• Sekisui Chemical Co Ltd
• Univ Hiroshima

Inventors

• Sun Rende
• Nakasuga Akira
• Nozato Shoji
• Oowashi Keigo
• Fukui Hiroji
• Haino Takeharu
• Sekiya Ryo

Classifications

• B32B2419/00

  Buildings or parts thereof · CPC title

• B32B7/05

  the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14) · CPC title

• C09K9/02 Primary

  Organic tenebrescent materials · CPC title

• G02F1/1516

  comprising organic material · CPC title

• Y10T428/30

  Self-sustaining carbon mass or layer with impregnant or other layer · CPC title