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


An efficient synthetic access to new cationic porphyrin-bipyridine iridium(III) bis-cyclometalated complexes was developed. These porphyrins bearing arylbipyridine moieties at beta-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 O-1(2), allowing us to envisage new challenges and opportunities for their applications in several fields, such as photo(catalysis) and photodynamic therapies.




Biochemistry & Molecular Biology; Chemistry


Moura, NMM; Serra, VV; Bastos, A; Biazotto, JC; Castro, KADF; Faustino, MAF; Lodeiro, C; da Silva, RS; Neves, MDPMS

nossos autores


The authors thank the University of Aveiro, FCT/MCTES for their financial support to the LAQV-REQUIMTE (UIDB/50006/2020) through national funds and, where applicable, co-financed by the FEDER, within the PT2020 Partnership Agreement, and to the Portuguese NMR Network. Centro de Quimica Estrutural is a Research Unit funded by Fundacao para a Ciencia e Tecnologia through projects UIDB/00100/2020 and UIDP/00100/2020. Institute of Molecular Sciences is an Associate Laboratory funded by FCT through project LA/P/0056/2020. This work was developed within the projects THERMIC (PTDC/QUI-COL/29379/2017) and PORP2PS (EXPL/QUI-QOR/0586/2021), financially supported by national funds (OE), through FCT/MCTES. NMM Moura, VV Serra and A Bastos thank their research contracts (CDL-CTTRI-048-88-ARH/2018, and CDL-CTTRI-62-ARH/2018) which are funded by national funds (OE), through FCT-Fundacao para a Ciencia e a Tecnologia, I.P., in the scope of the framework contract foreseen in numbers 4, 5 and 6 of the article 23, of the Law Decree 57/2016, of August 29, changed by Law 57/2017, of July 19. This work was partially supported by the Scientific Society PROTEOMASS (General Funds) (Portugal), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP-2019/19448-8) and Universidade de Sao Paulo. K.A.D.F. Castro thanks CAPES for the post-doctoral scholarship granted (PNPD/CAPES).

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