# US 11,078,209 B2 · Polycyclic aromatic hydrocarbon derivative, fluorescent material, phosphorescent material, and light-modulating material

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- Number: US 11,078,209 B2
- Document ID: US11078209B2
- Status: Granted
- Kind: B2
- Application number: 16/631,427
- Filed: 2018-07-17
- Published: 2020-07-02
- Granted: 2021-08-03
- Earliest claimed: 2017-07-21
- Assignees: Sekisui Chemical Co., Ltd.; Hiroshima University
- Applicants: Sekisui Chemical Co., Ltd.; Hiroshima University
- Inventors: Akira Nakasuga; Shoji Nozato; Hiroji Fukui; Takeharu Haino; Ryo Sekiya
- Web page: https://patentgrep.com/patent/US11078209B2

## CPC

- C07D 487/22: in which the condensed system contains four or more hetero rings
- C07D 495/22: in which the condensed system contains four or more hetero rings
- C09K 9/02: Organic tenebrescent materials
- C09K 11/06: containing organic luminescent materials
- C09K 2211/1018: Heterocyclic compounds
- G02F 1/15: based on an electrochromic effect
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

Provided is a new polycyclic aromatic hydrocarbon derivative. The polycyclic aromatic hydrocarbon derivative is a derivative of a polycyclic aromatic hydrocarbon having 6 or more aromatic rings and has a substituent represented by the following formula (1). (In the formula (1), R1 and R2 are carbon atoms of the aromatic rings in the polycyclic aromatic hydrocarbon, and R3 to R5 are carbon atoms of an aromatic ring or a heterocyclic ring in a group having the aromatic ring or the heterocyclic ring. n is 0 or 1, and m is the number of substituents.) [Chemical 1]

## Claims

### Claim 1

A light-modulating material comprising a polycyclic aromatic hydrocarbon derivative that is a derivative of a polycyclic aromatic hydrocarbon having 6 or more aromatic rings and has a substituent represented by a following formula (3):
[Chemical 3]
in which R1 and R2 are carbon atoms of the aromatic rings in the polycyclic aromatic hydrocarbon; R7 and R8 are each a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group (with an alkyl group having 1 to 20 carbon atoms), a cyano group, a nitro group, an amino group, an acylamino group, an alkylcarbonyl group, an arylcarbonyl group, or an acetoxy group; and m is a number of substituents.

### Claim 2

A polycyclic aromatic hydrocarbon derivative that is a derivative of a polycyclic aromatic hydrocarbon having 6 or more aromatic rings and has a substituent represented by a following formula (10):
[Chemical 4]
in which R1 and R2 are carbon atoms of the aromatic rings in the polycyclic aromatic hydrocarbon; R3 and R4 are carbon atoms of an aromatic ring or a heterocyclic ring in a group having the aromatic ring or the heterocyclic ring; R9 and R10 are each a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group (with an alkyl group having 1 to 20 carbon atoms), a cyano group, a nitro group, an amino group, an acylamino group, an alkylcarbonyl group, an arylcarbonyl group, or an acetoxy group; and m is a number of substituents.

### Claim 3 (depends on 1)

The light-modulating material according to claim 1, having a plane-direction dimension of 100 nm or less.