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Schrage BR, Ermilov E, Nemykin VN. Transient Absorption Spectra of Metal‐Free and Transition‐Metal 5,10,15,20‐Tetraferrocene Porphyrins: Influence of the Central Metal Ion, Solvent Polarity, and the Axial Ferrocene Ligand. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Briana R. Schrage
- University of Tennessee System: The University of Tennessee System Chemistry UNITED STATES
| | | | - Victor N. Nemykin
- University of Tennessee System: The University of Tennessee System Department of Chemistry 1420 Circle Drive 37996 Knoxville UNITED STATES
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Vecchi A, Sabin JR, Sabuzi F, Conte V, Cicero DO, Floris B, Galloni P, Nemykin VN. Similar, Yet Different: Long-Range Metal-Metal Coupling and Electron-Transfer Processes in Metal-Free 5,10,15,20-Tetra(ruthenocenyl)porphyrin. Inorg Chem 2021; 60:8227-8241. [PMID: 34033715 DOI: 10.1021/acs.inorgchem.1c00908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electronic structure, redox properties, and long-range metal-metal coupling in metal-free 5,10,15,20-tetra(ruthenocenyl)porphyrin (H2TRcP) were probed by spectroscopic (NMR, UV-vis, magnetic circular dichroism (MCD), and atmospheric pressure chemical ionization (APCI)), electrochemical (cyclic voltammetry, CV, and differential pulse voltammetry, DPV), spectroelectrochemical, and chemical oxidation methods, as well as theoretical (density functional theory, DFT, and time-dependent DFT, TDDFT) approaches. It was demonstrated that the spectroscopic properties of H2TRcP are significantly different from those in H2TFcP (metal-free 5,10,15,20-tetra(ferrocenyl)porphyrin). Ruthenocenyl fragments in H2TRcP have higher oxidation potentials than the ferrocene groups in the H2TFcP complex. Similar to H2TFcP, we were able to access and spectroscopically characterize the one- and two-electron oxidized mixed-valence states in the H2TRcP system. DFT predicts that the porphyrin π-system stabilizes the [H2TRcP]+ mixed-valence cation and prevents its dimerization, which is characteristic for ruthenocenyl systems. However, formation of the mixed-valence [H2TRcP]2+ is significantly less reproducible than the formation of [H2TRcP]+. DFT and TDDFT calculations suggest the ruthenocenyl fragment dominance in the highest occupied molecular orbital (HOMO) energy region and the presence of the low-energy MLCT (Rc → porphyrin (π*)) transitions in the visible region with energies higher than the predominantly porphyrin-centered Q-bands.
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Affiliation(s)
- Andrea Vecchi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy.,Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Jared R Sabin
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Federica Sabuzi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Valeria Conte
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Daniel Oscar Cicero
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Barbara Floris
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Pierluca Galloni
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Victor N Nemykin
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States.,Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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Tiravia M, Sabuzi F, Cirulli M, Pezzola S, Di Carmine G, Cicero DO, Floris B, Conte V, Galloni P. 3,7-Bis(N
-methyl-N
-phenylamino)phenothiazinium Salt: Improved Synthesis and Aggregation Behavior in Solution. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900504] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Martina Tiravia
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Federica Sabuzi
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Martina Cirulli
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road E1 4NS London United Kingdom
| | - Silvia Pezzola
- BT-InnoVaChem srl; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Graziano Di Carmine
- Department of Chemical and Pharmaceutical Sciences; University of Ferrara; Via L. Borsari 4 44121 Ferrara Italy
| | - Daniel Oscar Cicero
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Barbara Floris
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Valeria Conte
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
| | - Pierluca Galloni
- Department of Chemical Science and Technologies; University of Rome Tor Vergata; Via della Ricerca Scientifica snc 00133 Rome Italy
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Sabuzi F, Coletti A, Pomarico G, Floris B, Galloni P, Conte V. Modulating electron transfer in ferrocene-naphthoquinone dyads: New insights in parameters influencing ET efficiency. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Possanza F, Vecchi A, Conte V, Floris B, Galloni P. 5,10,15,20-Tetrakis(1′-acetylferrocenyl)porphyrin: Electronic and structural effects of acetyl group on TFcP. J PORPHYR PHTHALOCYA 2017. [DOI: 10.1142/s1088424617500468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Synthesis of tetrasubstituted-tetraferrocenylporphyrins containing an acetyl functional group on all ferrocenyl moiety has been performed, allowing the analysis of the effects of these groups in terms of geometry and electronic distribution. TFcPs exhibit interesting electrochemical properties, mostly due to electronic communication between the ferrocenyl substituents and the porphyrin core and the presence of four acetyl substituents do not affect significantly these properties. Nevertheless the functionalization leads to a more defined electronic transition, in particular in the Q region and a more stable TFcP in terms of chemical oxidation. This can openinig the way to modulate and/or improve the performance of TFcP in various applications.
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Affiliation(s)
- Fabio Possanza
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via Della Ricerca Scientifica snc, 00133 Rome, Italy
| | - Andrea Vecchi
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via Della Ricerca Scientifica snc, 00133 Rome, Italy
| | - Valeria Conte
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via Della Ricerca Scientifica snc, 00133 Rome, Italy
| | - Barbara Floris
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via Della Ricerca Scientifica snc, 00133 Rome, Italy
| | - Pierluca Galloni
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, via Della Ricerca Scientifica snc, 00133 Rome, Italy
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Sabuzi F, Tiravia M, Vecchi A, Gatto E, Venanzi M, Floris B, Conte V, Galloni P. Deposition of tetraferrocenylporphyrins on ITO surfaces for photo-catalytic O2 activation. Dalton Trans 2016; 45:14745-53. [DOI: 10.1039/c6dt01821a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetraferrocenylporphyrins have been successfully deposited on ITO electrodes for O2 photo-catalytic activation.
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Affiliation(s)
- F. Sabuzi
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - M. Tiravia
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - A. Vecchi
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - E. Gatto
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - M. Venanzi
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - B. Floris
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - V. Conte
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
| | - P. Galloni
- Dipartimento di Scienze e Tecnologie Chimiche
- Università di Roma Tor Vergata
- Rome
- Italy
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