New Bis-Cyclometalated Iridium(III) Complexes with β-Substituted Porphyrin-Arylbipyridine as the Ancillary Ligand: Electrochemical and Photophysical Insights |
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Authors: | 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 Graç a 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. |
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Keywords: | coordination chemistry porphyrin cyclometalated iridium(III) PET singlet oxygen |
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