Abstract
AbstractThe paper deals with the synthesis of a series of cationic [Pt(ppz)2(N^N)]2+ complexes containing deprotonated 1‐phenyl‐1H‐pyrazole as cyclometallating (C^N) ligands and α‐diimines (N^N) in the form of water‐soluble salts with OTf− (trifluoromethanesulfonate) counter ions. These complexes were obtained from cis‐[Pt(ppz)2Cl2] through chloride ligands substitution with α‐diimines. The complexes were identified by means of NMR spectroscopy and their molecular structures were confirmed by X‐ray crystallography. The photophysical properties of these complexes were studied in detail. These complexes showed strong luminescence in MeOH/EtOH 1 : 1 glasses at 77 K but were almost non‐emitting in MeCN solutions at room temperature. Their emission properties were compared to analogues IrIII complexes.
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