Iridium complex and organic light-emitting diode using the same

Patent metadata

Field	Value
Publication number	US-10396298-B2
Application number	US-201715415691-A
Country	US
Kind code	B2
Filing date	Jan 25, 2017
Priority date	Jan 25, 2017
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

An iridium complex and an OLED using the same are provided. The iridium complex is represented by general formula (I). In the general formula (I), A1, A2, A3, A4 and A5 are each independently a 5-membered unsaturated ring or a 6-membered unsaturated ring.

First claim

What is claimed is:

1. An iridium complex represented by general formula (I):

wherein
A1, A2, A3, A4 and A5 are each independently a 5-membered unsaturated ring or a 6-membered unsaturated ring.

2. The iridium complex of claim 1 , wherein A1, A2, A3, A4 and A5 on a left side of formula (I) are respectively identical to A1, A2, A3, A4 and A5 on a right side of formula (I).

3. The iridium complex of claim 1 , wherein at least one of A1, A2, A3, A4 or A5 on a left side of formula (I) is different from the corresponding A1, A2, A3, A4 or A5 on a right side of formula (I).

4. The iridium complex of claim 1 , wherein at least one substituent on A1, A2, A3, A4 or A5 on a left side of formula (I) is different from a substituent at the corresponding position on the corresponding A1, A2, A3, A4 or A5 on a right side of formula (I).

5. The iridium complex of claim 1 , represented by general formula (IA):

wherein
each X 1 to X 11 are each independently carbon or nitrogen;
each R 1 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, substituted or unsubstituted C 6 -C 12 aryl, or —C f F 2f+1 , and f is an integer of 0 to 3;
each R 2 , each R 3 and each R 4 are independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, substituted or unsubstituted C 1 -C 6 alkoxyl, substituted or unsubstituted C 6 -C 12 aryl, or —C f F 2f+1 , and f is an integer of 0 to 3;
m is an integer of 0 to 3;
n is an integer of 0 to 4;
p is an integer of 0 to 4;
each R 5 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, or substituted or unsubstituted C 1 -C 6 alkoxy;
q is an integer of 1 to 2;
each R 6 is independently hydrogen, substituted or unsubstituted C 1 -C 12 alkyl, or substituted or unsubstituted C 6 -C 12 aryl;
when m is equal to or greater than 2, two or more R 2 's can joint to form a C 3 -C 8 aromatic ring;
when n is equal to or greater than 2, two or more R 3 's can joint to form a C 3 -C 8 aromatic ring;
when p is equal to or greater than 2, two or more R 4 's can joint to form a C 3 -C 8 aromatic ring; and
when q is equal to or greater than 2, two or more R 5 's can joint to form a C 3 -C 8 aromatic ring.

6. The iridium complex of claim 5 , having a structure represented by one of formula (IA-1) to formula (IA-50):

7. 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 iridium complex of claim 1 .

Assignees

• Univ Nat Tsing Hua

Inventors

• Chi Yun
• Palanisamy Rajakannu

Classifications

• C09K2211/185

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

• C07F15/0033 Primary

  Iridium compounds · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C09K2211/1044

  containing two nitrogen atoms as heteroatoms · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title