New Bis-Cyclometalated Iridium(III) Complexes with β-Substituted Porphyrin-Arylbipyridine as the Ancillary Ligand: Electrochemical and Photophysical Insights

Nuno M. M. Moura, Vanda Vaz Serra, Alexandre Bastos, Juliana C. Biazotto, Kelly A. D. F. Castro, Maria Amparo F. Faustino, Carlos Lodeiro, Roberto S. da Silva, Maria da Graça P. M. S. Neves

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Abstract

An efficient synthetic access to new cationic porphyrin-bipyridine iridium(III) bis-cyclometalated complexes was developed. These porphyrins bearing arylbipyridine moieties at β-pyrrolic positions coordinated with iridium(III), and the corresponding Zn(II) porphyrin complexes were spectroscopically, electrochemically, and electronically characterized. The features displayed by the new cyclometalated porphyrin-bipyridine iridium(III) complexes, namely photoinduced electron transfer process (PET), and a remarkable efficiency to generate 1O2, allowing us to envisage new challenges and opportunities for their applications in several fields, such as photo(catalysis) and photodynamic therapies.

Original languageEnglish
Article number7606
Number of pages19
JournalInternational Journal of Molecular Sciences
Volume23
Issue number14
DOIs
Publication statusPublished - 9 Jul 2022

Keywords

  • coordination chemistry
  • cyclometalated iridium(III)
  • PET
  • porphyrin
  • singlet oxygen

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