Method for manufacturing iridium complex

Patent metadata

Field	Value
Publication number	US-10125158-B2
Application number	US-201515503822-A
Country	US
Kind code	B2
Filing date	Aug 28, 2015
Priority date	Sep 19, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A method for manufacturing tris(β-diketonato)iridium by reacting β-diketone with an iridium compound, in which an activation treatment including (a) an alkali treatment and (b) an acid treatment described below is applied to the iridium compound to activate the iridium compound, and to subsequently react the β-diketone, (a) an alkali treatment: a treatment of adding alkali to a solution of the iridium compound to raise pH of the solution to a more alkaline side than that before the alkali addition and to not less than 10, and (b) an acid treatment: a treatment of adding acid to the solution subjected to the alkali treatment to lower pH of the solution to a more acidic side than that before the acid addition and to make the pH difference between solutions before and after the acid addition be not less than 0.1 and not more than 10. The present invention allows manufacture of tris(β-diketonato)iridium utilizing a wide variety of β-diketones.

First claim

The invention claimed is:

1. A method for manufacturing tris(β-diketonato)iridium shown by Chem 2 in which a β-diketone is coordinated to iridium, by reacting the β-diketone shown by Chem 1 with an iridium compound which is any one of iridium nitrate (III, IV), iridium chloride (III, IV), and ammonium hexachloroiridate (III, IV), wherein
an activation treatment including (a) an alkali treatment and (b) an acid treatment described below is applied to the iridium compound to activate the iridium compound, and to subsequently react the β-diketone,
(a) an alkali treatment: a treatment of adding alkali to a solution of the iridium compound to raise pH of the solution to a more alkaline side than that before the alkali addition and to not less than 10, and
(b) an acid treatment: a treatment of adding acid to the solution subjected to the alkali treatment to lower pH of the solution to a more acidic side than that before the acid addition and to make the pH difference between solutions before and after the acid addition be not less than 0.1 and not more than 10,

wherein each of Ra and Rb is a hydrocarbon group or substituents in which a hydrogen atom in a hydrocarbon group is substituted by a halogen atom, Ra and Rb may be different substituents, or identical substituents, Rc is a substituent composed of any of a hydrogen atom, a halogen atom and a hydrocarbon group; and

wherein Ra, Rb, and Rc have the same meaning as in Chem 1.

2. The method for manufacturing tris(β-diketonato)iridium according to claim 1 , wherein pH after alkali addition in the alkali treatment (a) is set to not less than 12.

3. The method for manufacturing tris(β-diketonato)iridium according to claim 1 , wherein the pH difference between solutions before and after the alkali addition in the alkali treatment (a) is set to not less than 2 and not more than 13.

4. The method for manufacturing tris(β-diketonato)iridium according to claim 1 , wherein the pH difference between solutions before and after the acid addition in the acid treatment (b) is set to not less than 1 and not more than 10.

5. The method for manufacturing tris(β-diketonato)iridium according to claim 2 , wherein the pH difference between solutions before and after the alkali addition in the alkali treatment (a) is set to not less than 2 and not more than 13.

6. The method for manufacturing tris(β-diketonato)iridium according to claim 2 , wherein the pH difference between solutions before and after the acid addition in the acid treatment (b) is set to not less than 1 and not more than 10.

7. The method for manufacturing tris(β-diketonato)iridium according to claim 3 , wherein the pH difference between solutions before and after the acid addition in the acid treatment (b) is set to not less than 1 and not more than 10.

Assignees

• Tanaka Precious Metal Ind

Inventors

• Masahiro Yasushi
• SHIGETOMI Toshiyuki
• Taniuchi Junichi
• Harada Ryosuke

Classifications

• C09K2211/185

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

• C23C16/45553

  characterized by the use of precursors specially adapted for ALD · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• H01L51/0002

  Electricity · mapped topic

• C23C16/18

  from metallo-organic compounds · CPC title