PLATINUM COMPLEX, OLED AND APPARATUS FOR PROVIDING VISIBLE EMISSION OR NEAR-INFRARED EMISSION

• US 20180155380A1
• Filed: 01/20/2017
• Published: 06/07/2018
• Est. Priority Date: 12/07/2016
• Status: Active Grant

• Current Assignee: National Tsing Hua University
• Original Assignee: National Tsing Hua University
• Inventors: Chi, Yun, Palanisamy, Rajakannu, Nandakumar, Meganathan
• Granted Patent: US 10,640,525 B2
• Time in Patent Office: Days
• CPC Class Codes: C07F 15/0086 Platinum compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/18 Carrier blocking layers
• CPC Class Codes: H10K 85/346 comprising platinum

Abstract

A platinum complex, an OLED and an apparatus for providing visible emission or near-infrared (NIR) emission using the same are described. The platinum complex has a structure represented by formula (I):

wherein A1 to A4 each independently represent a 5-membered or 6-membered unsaturated ring, a first chelating ligand including A1 and A4 fragments has a minus one formal charge, and a second chelating ligand including A2 and A3 fragments has a minus one formal charge.

Claims

1. A platinum complex, having a structure represented by formula (I):

2. The platinum complex of claim 1, having a structure represented by formula (I-1):

3. The platinum complex of claim 1, having a structure represented by formula (IA):

4. The platinum complex of claim 3, wherein R¹ comprises —

C_nF_2n+1, and n is an integer of 0 to 3.

5. The platinum complex of claim 3, having a structure represented by one of formula (IA-1) to formula (IA-22):

6. The platinum complex of claim 1, having a structure represented by formula (IB):

7. The platinum complex of claim 6, having a structure represented by one of formula (IB-1) to formula (IB-4):

8. The platinum complex of claim 1, having an emission wavelength of 450 nm to 1,200 nm.

9. An apparatus emitting visible light or near-infrared light, comprising the platinum complex of claim 1.

10. 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.