Preparation of luminescent iridium complexes and precursors thereof
AssigneeNational Chen Kung University
InventorsKom-Bei Shiu, Wu-Sian Sie
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Abstract
Synthetic processes for preparing luminescent iridium complexes and precursors thereof are provided. The method employs water as the reaction solvent to prepare luminescent iridium complexes in two different ways. In the first way, a precursor [Ir2(C11NR8)4I2] (Formula I) is prepared from one of IrCl3, M3IrCl6 (M=Li, Na, K) and [Ir2(C11NR8)4Cl2], and then the precursor [Ir2(C11NR8)4I2] is converted into one of the two luminescent iridium isomeric complexes [Ir(C11NR8)2(C11NR′8)] (Formula II). In the second way, a metal complex IrCl3 or M3IrCl6 (M=Li, Na, K), HC11NR8 and a base are converted selectively into one of the two iridium isomeric complexes [Ir(C11NR8)3] (Formula VIII). Herein, R and R′ are defined the same as the specification.
Claims9
A method for preparing a compound represented by the following formula (VIII),
- wherein the compound of the formula (VIII) is either a meridional isomer represented by the following formula (IX) or a facial isomer represented by the following formula (X),
- including a step of reacting IrCl3 or M3IrCl6 with a base and a compound of the following formula (VI) in water,
- wherein
- M is Li, Na or K;
- and
- each of R1, R2, R3, R4, R5, R6, R7 and R8, independently, is hydrogen, deuterium, alkyl, alkenyl, alkynyl, halogen, alkoxy, alkenoxy, alkynoxy, haloalkyl, haloalkenyl, haloalkynyl, cycloalkyl, cycloalkenyl or aryl;
- or Rx and Rx+1 taken together is alkylene, alkenylene, haloalkylene or haloalkenylene, x being an integer of 1 to 7.
Dependencies are inferred from the claim text.