Sulfonic acid ester compound and use therefor

Patent metadata

Field	Value
Publication number	US-10513491-B2
Application number	US-201716309845-A
Country	US
Kind code	B2
Filing date	Jun 14, 2017
Priority date	Jun 16, 2016
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

Provided is a sulfonic acid ester compound represented by formula (1).

(In the formula, R 1 and R 2 each independently represent a hydrogen atom, or a straight-chain or branched monovalent aliphatic hydrocarbon group. R 3 represents a straight-chain or branched monovalent aliphatic hydrocarbon group. The sum of the carbon numbers of R 1 , R 2 and R 3 is 6 or greater. A 1 represents —O— or —S—. A 2 represents an aromatic group having a valence of (n+1). A 3 represents a hydrocarbon group which has a valence of m, and is unsubstituted or has a substituent that contains one or more aromatic rings. m represents an integer satisfying 2≤m≤4. n represents an integer satisfying 1≤n≤4).

First claim

The invention claimed is:

1. A sulfonic acid ester compound of formula (1) below

wherein R 1 and R 2 are each independently a hydrogen atom or a linear or branched monovalent aliphatic hydrocarbon group, and R 3 is a linear or branched monovalent aliphatic hydrocarbon group, the total number of carbon atoms on R 1 , R 2 and R 3 being 6 or more;
A 1 represents —O— or —S—, A 2 is an aromatic group having a valence of n+1, and A 3 is a substituted or unsubstituted m-valent hydrocarbon group containing one or more aromatic ring; and
m is an integer that satisfies the condition 2≤m≤4, and n is an integer that satisfies the condition 1≤n≤4.

2. The sulfonic acid ester compound of claim 1 , wherein R 1 is a hydrogen atom, and R 2 and R 3 are each independently an alkyl group of 1 to 6 carbon atoms.

3. The sulfonic acid ester compound of claim 1 or 2 , wherein A 2 is a group derived from naphthalene or anthracene.

4. The sulfonic acid ester compound of claim 3 , wherein A 2 is a group derived from naphthalene.

5. The sulfonic acid ester compound of claim 1 , wherein A 3 is a group derived from perfluorobiphenyl.

6. The sulfonic acid ester compound of claim 1 , wherein m is 2.

7. The sulfonic acid ester compound of claim 1 , wherein n is 2.

8. An electron-accepting substance precursor comprising the sulfonic acid ester compound of claim 1 .

9. A charge-transporting varnish comprising the electron-accepting substance precursor of claim 8 , a charge-transporting substance and an organic solvent.

10. The charge-transporting varnish of claim 9 , wherein the organic solvent is a low-polarity organic solvent.

11. The charge-transporting varnish of claim 9 or 10 , wherein the charge-transporting substance is an aniline derivative.

12. A charge-transporting thin film produced using the charge-transporting varnish of claim 9 .

13. An organic electroluminescent device comprising the charge-transporting thin film of claim 12 .

Assignees

• Nissan Chemical Corp

Inventors

• Ota Hirofumi
• Endo Toshiyuki

Classifications

• C09K2211/185

  of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C09D201/00

  Coating compositions based on unspecified macromolecular compounds · CPC title