Cyclometallated 2-Phenylpyrimidine Derived Platinum Complexes: Synthesis and Photophysical Properties

Michaela Feckova (1, 2) , Samia Kahlal (1) , Thierry Roisnel (1) , Jean-Yves Saillard (1) , Julien Boixel (1) , Mariia Hruzd (1) , Pascal Le Poul (1) , Sebastien Gauthier (1) , Francoise Robin-Le Guen (1) , Filip Bures (2) , Sylvain Achelle (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 University of Pardubice

A series of five platinum (II) complexes based on 2-phenylpyrimidine ligands have been designed. Pyridine and chloride were used as auxiliary ligands. These complexes exhibit a slightly distorted square-planar geometry. The nature and position of substituent on the phenyl ring was thoroughly studied. The presence of an electron-donating substituent on the phenyl ring in the para position of the platinum atom leads to a red shift of the lowest-energy absorption band, which corresponds to the HOMO -> LUMO transition and permits to obtain phosphorescence in deoxygenated CH2Cl2 solution. All compounds are emissive in the solid state with a significant redshift for complexes bearing electron-donating substituent on the phenyl ring of phenylpyrimidine ligand.

Mots clés: Heterocycles; N ligands; Phosphorescence; Platinum (II) complexes; Pyrimidine

Domaines: Chimie; Chimie inorganique

Michaela Feckova, Samia Kahlal, Thierry Roisnel, Jean-Yves Saillard, Julien Boixel, et al.. Cyclometallated 2-Phenylpyrimidine Derived Platinum Complexes: Synthesis and Photophysical Properties. European Journal of Inorganic Chemistry, 2021, 2021 (16), pp.1592-1600. ⟨10.1002/ejic.202100155⟩. ⟨hal-03217089⟩