Platinum complex having carbene fragment, OLED using the same, and nitrogen-containing heterocyclic bidentate chelate having carbene unit

Patent metadata

Field	Value
Publication number	US-10170709-B2
Application number	US-201514948406-A
Country	US
Kind code	B2
Filing date	Nov 23, 2015
Priority date	Jul 3, 2015
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A platinum complex having at least one carbene fragment, and an OLED using the same are described. The platinum complex contains a platinum cation, a zero-valent nitrogen-containing heterocyclic bidentate chelate, and a dianionic nitrogen-containing heterocyclic bidentate chelate. The zero-valent nitrogen-containing heterocyclic bidentate chelate has at least one carbene unit coordinating to platinum. The dianionic nitrogen-containing heterocyclic bidentate chelate has at least one electron-withdrawing substituent, and forms two N—Pt bonds, or one N—Pt bond and one C—Pt bond, with the central platinum cation.

First claim

What is claimed is:

1. A platinum complex having a carbene fragment, containing: a platinum cation, a zero-valent first nitrogen-containing heterocyclic bidentate chelate, and a dianionic second nitrogen-containing heterocyclic bidentate chelate, wherein the first nitrogen-containing heterocyclic bidentate chelate has at least one carbene unit coordinating to platinum, and the second nitrogen-containing heterocyclic bidentate chelate has at least one electron-withdrawing substituent and forms two N—Pt bonds, or one N—Pt bond and one C—Pt bond, with the platinum cation,
wherein the platinum complex is represented by formula (I) or (II):

wherein X is CH or N, R F is —C m F 2m+1 and m is an integer of 1 to 7.

2. The platinum complex of claim 1 , wherein the first nitrogen-containing heterocyclic bidentate chelate is represented by formula (1), (2) or (3):

wherein R 1 is hydrogen, C 1-12 alkyl, unsubstituted phenyl, or a substituted phenyl group, each R 2 is independently C 1-6 alkyl, each R 3 is independently hydrogen, C 1-12 alkyl, unsubstituted phenyl, or a substituted phenyl group, R 4 is hydrogen or C 1-6 alkyl, and n is 1, 2 or 3, wherein any two adjacent R 3 may join to form a ring.

3. The platinum complex of claim 2 , which is represented by formula (I-1-1), (I-1-2), (I-1-3), (I-1-4), (I-1-5) or (I-1-6):

4. The platinum complex of claim 2 , which is represented by formula (II-2-1), (II-2-2), (II-2-3), (II-2-4), (II-2-5), (II-2-6), (II-2-7), (II-2-8), (II-2-9) or (II-2-10):

5. The platinum complex of claim 2 , which is represented by formula (II-3-1), (II-3-2), (II-3-3), (II-3-4), (II-3-5) or (II-3-6):

6. An organic light-emitting diode, comprising two electrodes and a light-emitting layer disposed between the two electrodes, wherein the light-emitting layer contains the platinum complex of claim 1 .

Assignees

• Univ Nat Tsing Hua

Inventors

• Chi Yun
• Hsu Che-Wei
• Tseng Chung-Hao
• Liao jia-ling

Classifications

• C09K2211/1007

  Non-condensed systems · CPC title

• C09K2211/185

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

• C07D401/04

  directly linked by a ring-member-to-ring-member bond · CPC title

• C07F15/0086 Primary

  Platinum compounds · CPC title

• C09K2211/1059

  containing three nitrogen atoms as heteroatoms · CPC title