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US 2013/0172561 A1Published application
Synthesis of cyclometallated platinum(ii) complexes
AssigneeUniversal Display Corporation
InventorsJui-Yi Tsai, Gregg Kottas, Walter Yeager
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Abstract
A single-step method of making tetradentate platinum or palladium complexes is disclosed. The method advantageously allows the formation of a platinum or palladium complex in a single step, even with sterically hindered ligands, without the use of highly reactive intermediates. The compounds made by the disclosed method are useful in OLED applications.
Claims19
A method of preparing a metal complex comprising:
- (a) combining at least one ligand L with a metal precursor to form a mixture;
- wherein the ligand L is at least bidentate;
- wherein the metal precursor is a Pt or Pd compound containing at least one bidentate ligand L′;
- wherein no halogen is directly connected to the Pt or Pd;
- (b) reacting the mixture for a sufficient time to form a reaction product;
- wherein the reaction product has at least two atoms from ligand L bonded to the Pt or Pd, wherein ligand L has at least one anionic carbon donor bonded to Pt or Pd;
- (c) recovering the reaction product from the mixture.
4 more elements
Dependencies are inferred from the claim text.