Ambient temperature liquid-form organic materials and use thereof

Patent metadata

Field	Value
Publication number	US-9570691-B2
Application number	US-201113878013-A
Country	US
Kind code	B2
Filing date	Oct 7, 2011
Priority date	Oct 7, 2010
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

An organic material consisting of a π-conjugated molecule which is in a liquid form at ambient temperature and use thereof are provided. The ambient temperature liquid-form organic material according to the present invention consists of a π-conjugated molecule having 2 or more side chains, the 2 or more side chains are same or different side chains selected from the group consisting of a branched alkyl chain, an alkyl chain having a polymerization site at a terminal, an oligosiloxane chain, a fluorocarbon chain, an oligoethylene glycol chain and derivatives thereof, and each of the 2 or more side chains is bound directly or via a substituent to the π-conjugated molecule.

First claim

The invention claimed is:

1. An ambient temperature liquid-form organic material consisting of a π-conjugated molecule having 2 or more branched alkyl chains, wherein:
the π-conjugated molecule is selected from the group consisting of oligo(p-)phenylene vinylene and stilbene,
each of the 2 or more branched alkyl chains is bound to the π-conjugated molecule directly or via a substituent,
each of the 2 or more branched alkyl chains is independently represented by any one of the following formulae:

wherein S is a substituent that is at least one selected from the group consisting of phenyl, benzyl, methylene, amido, ester, ether, thioether and urea, and the combination of the R1 and R2 is selected from the group consisting of the following formulae:

 and
the 2 or more branched alkyl chains are bound to the π-conjugated molecule in such a manner that the π-π interaction between π-conjugated molecules is inhibited.

2. The ambient temperature liquid-form organic material according to claim 1 , wherein the π-conjugated molecule has an absorption in a ultraviolet or visible wavelength region.

3. The ambient temperature liquid-form organic material according to claim 1 , wherein the π-conjugated molecule is oligo(p-)phenylene vinylene and represented by any of the following formulae:

4. A luminescent material comprising the ambient temperature liquid-form organic material according to claim 1 .

5. An ink material comprising the ambient temperature liquid-form organic material according to claim 1 .

6. A photovoltaic device comprising a transparent electrode, a photovoltaic part and a counter electrode,
wherein the photovoltaic part includes the ambient temperature liquid-form organic material according to claim 1 .

7. The photovoltaic device according to claim 6 ,
wherein the photovoltaic part comprises an electron donor and an electron acceptor, and
a solvent for the electron donor and electron acceptor is the ambient temperature liquid-form organic material.

8. The photovoltaic device according to claim 6 ,
wherein the photovoltaic part comprises an electron donor and an electron acceptor,
the electron donor is the ambient temperature liquid-form organic material, and
the electron acceptor is an ambient temperature liquid-form fullerene.

Assignees

• Nakanishi Takashi
• Nat Inst For Materials Science

Inventors

• Nakanishi Takashi

Classifications

• H10W90/756

  between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title

• H10W72/5522

  comprising gold [Au] · CPC title

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10K85/30

  Coordination compounds · CPC title

• H01L51/005

  Electricity · mapped topic