Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume 2021, Issue 16, Pages 1592-1600Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202100155
Keywords
N ligands; Heterocycles; Phosphorescence; Platinum (II) complexes; Pyrimidine
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Funding
- Region Bretagne, France
- Congseil Departemental des Cotes d'Armor, France
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A series of five platinum (II) complexes based on 2-phenylpyrimidine ligands were designed in this study. It was found that the presence of substituents on the phenyl ring leads to a red shift of the lowest-energy absorption band and results in emission in the solid state.
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.
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