Charged cyclometalated iridium(III) complexes that have large electrochemical gap

Bis-cyclometalated cationic Ir(III) diimine complexes [Ir(C^N)2(N^N)](PF6) with 1-phenylpyrazoles (C^N) and 1-(4′-tert-butyl-2′-pyridyl)pyrazole (N^N) are white solids that have absorption onset below 425 nm and electrochemical gap of up to 3.5 V.

Graphical abstractBis-cyclometalated cationic Ir(III) diimine complexes [Ir(C^N)2(N^N)](PF6) with 1-phenylpyrazoles (C^N) and 1-(4′-tert-butyl-2′-pyridyl)pyrazole (N^N) are white solids that have absorption onset below 425 nm and electrochemical gap of up to 3.5 V.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New 1-(4′-tert-butyl-2′-pyridyl)pyrazole N^N ligand. ► New cationic bis-cyclometalated Ir(III) diimine complexes [Ir(C^N)2(N^N)](PF6). ► New complexes have an absorption onset below 425 nm and an electrochemical gap of up to 3.5 V.