Synthesis, Luminescence, and Electrochemistry of Tris-Chelate Platinum(IV) Complexes with Cyclometalated N-Heterocyclic Carbene Ligands and Aromatic Diimines
2024

New Luminescent Platinum(IV) Complexes with N-Heterocyclic Carbenes

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Author Information

Author(s): Serrano-Guarinos José, Jiménez-García Adrián, Bautista Delia, González-Herrero Pablo, Vivancos Ángela

Primary Institution: Universidad de Murcia

Hypothesis

The introduction of cyclometalated N-heterocyclic carbene ligands will enhance the luminescent properties of platinum(IV) complexes.

Conclusion

The study successfully synthesized new luminescent platinum(IV) complexes that exhibit high emission efficiencies and redox stability.

Supporting Evidence

  • The new complexes showed long-lived phosphorescence with quantum yields reaching 0.58 in solid matrices.
  • Complexes with bulky substituents exhibited higher emission efficiencies.
  • The introduction of cyclometalated aryl-NHC ligands improved the photostability of the complexes.
  • Electrochemical studies revealed quasi-reversible one-electron reductions, indicating high redox stability.

Takeaway

Scientists made new shiny platinum compounds that glow and are stable, which could be useful for things like sensors and lights.

Methodology

The complexes were synthesized through chloride abstraction from a precursor using silver triflate and characterized using various spectroscopic techniques.

Digital Object Identifier (DOI)

10.1021/acs.inorgchem.4c04446

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