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Ventura B, Veclani D, Venturini A, Armaroli N, Baroncini M, Ceroni P, Marchini M. Elucidating the Excited State Behavior of Pyridyl Pyridinium Systems via Computational and Transient Absorption Studies of Tetrahedral Multichromophoric Arrays and their Model Compounds. Chemistry 2023; 29:e202301853. [PMID: 37563909 DOI: 10.1002/chem.202301853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/12/2023]
Abstract
The tetrahedral shape-persistent molecule 14+ , containing four identical pyridyl pyridinium units connected via a sp3 hybridized carbon atom, has been investigated in detail by means of steady-state and time resolved spectroscopy. Remarkable photophysical properties are observed, particularly in comparison with protonated and methylated analogues (1H4 8+ , 1Me4 8+ ), which exhibit substantially shorter excited state lifetimes and lower emission quantum yields. Theoretical studies have rationalized the behavior of the tetrameric molecules relative to the monomers, with DFT and TD-DFT calculations corroborating steady-state (absorption and emission) and transient absorption spectra. The behavior of the monomeric compounds (each consisting in one of the four identical subunits of the tetramers, i. e., 2+ , 2H2+ and 2Me2+ ) considerably differs from that of the tetramers, indicating a strong electronic interaction between the subunits in the tetrameric species, likely promoted by the homoconjugation through the connecting sp3 C atom. 2+ is characterized by a peculiar S1 -S2 excited state inversion, whereas the short-lived emitting S1 state of 2H2+ and 2Me2+ exhibits a partial charge-transfer character, as substantiated by spectro-electrochemical studies. Among the six investigated systems, only 14+ is a sizeable luminophore (Φem =0.15), which is related to the peculiar features of its singlet state.
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Affiliation(s)
- Barbara Ventura
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Daniele Veclani
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Alessandro Venturini
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Massimo Baroncini
- CLAN-Center for Light Activated Nanostructures, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Viale G. Fanin 50, 40127, Bologna, Italy
| | - Paola Ceroni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Marianna Marchini
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via F. Selmi 2, 40126, Bologna, Italy
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2
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Dahl Jensen J, Jakobsen RK, Yao Z, Laursen BW. Investigating Design Rules for Photoinduced Electron Transfer Quenching in Triangulenium Probes. Chemistry 2023; 29:e202301077. [PMID: 37261711 DOI: 10.1002/chem.202301077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/23/2023] [Accepted: 05/30/2023] [Indexed: 06/02/2023]
Abstract
Fluorescent probes based on photoinduced electron transfer (PET) quenching of long lifetime triangulenium fluorophores have found multiple applications. For such probes a successful design relies on the right balance between the rate of PET quenching and fluorescence. In a series of ADOTA (A) and DAOTA (D) triangulenium fluorophores appended with aniline-like quencher moieties, we have investigated the rate of quenching and its relation to thermodynamic driving force, distance, and conjugation within the quencher moiety. Three different quenchers, a short (1), a long (2), and a long twisted (3), 4-aminophenyl, 4'-aminobiphenyl, and 2,2'-dimethyl-4'-aminobiphenyl, respectively were investigated. Steady-state spectroscopy and electrochemistry confirms that the quencher moieties are electronically decoupled from the dyes and have similar oxidation potentials and thus driving force for PET quenching, irrespectively of their different length and conjugation. Time-resolved fluorescence measurement was used to measure the fast PET quenching, with rate constant kPET ranging from >4×1011 to 2×109 s-1 . Interestingly, PET quenching is equally efficient/fast from 1 and 2, even with increase in distance between the donor and the acceptor. However, when twisting the biphenyl in 3, a 20-fold decrease in quenching is found. Even with this decrease in kPET, the quenching in 3 A/D is still highly efficient, with nearly 99 % quenching. The study show that long lifetime fluorophores can be efficiently switched even by relatively slow PET processes and that PET quencher moieties can be removed far from the fluorophore if conjugated linkers are applied.
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Affiliation(s)
- Jesper Dahl Jensen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Rasmus K Jakobsen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Zehan Yao
- Division of Chemical Physics, Department of Chemistry, Lund University, Lund, Sweden
| | - Bo W Laursen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
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3
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Santoro A, Cancelliere AM, Kamogawa K, Serroni S, Puntoriero F, Tamaki Y, Campagna S, Ishitani O. Photocatalyzed CO 2 reduction to CO by supramolecular photocatalysts made of Ru(II) photosensitizers and Re(I) catalytic subunits containing preformed CO 2TEOA adducts. Sci Rep 2023; 13:11320. [PMID: 37443197 DOI: 10.1038/s41598-023-38411-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/07/2023] [Indexed: 07/15/2023] Open
Abstract
Two new supramolecular photocatalysts containing Ru(II) polypyridine units as light-harvesting photosensitizers and Re(I) polypyridine subunits as catalytic centers have been prepared. The new species, RuRe2A and Ru2ReA, contain catalytic Re(I) subunits coordinated by the preformed CO2TEOA adduct (known to be the effective catalytic subunits; TEOA is triethanolamine) and exhibit quite efficient and selective photoreduction of CO2 to CO, with outstanding TONs of 2368 and 2695 and a selectivity of 99.9% and 98.9%, respectively. Such photocatalytic properties are significantly improved with respect to those of previously studied RuRe2 and Ru2Re parent compounds, containing chloride ligands instead of the CO2TEOA adduct. Comparison between photocatalytic performance of the new species and their parent compounds allows to investigate the effect of the CO2TEOA insertion process as well as the eventual effect of the presence of chloride ions in solution on the photocatalytic processes. The improved photocatalytic properties of RuRe2A and Ru2ReA compared with their parent species are attributed to a combined effect of different distribution of the one-electron reduced form of the supramolecular photocatalysts on the Ru-subunit(s) (leading to decreased CO formation due to a poisoning ligand loss process) and on the Re-subunit(s) and to the presence of chloride ions in solution for RuRe2 and Ru2Re, which could interfere with the CO2TEOA adduct formation, a needed requisite for CO forming catalysis. These results strongly indicate the utility of preparing supramolecular photocatalysts containing preformed adducts.
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Affiliation(s)
- Antonio Santoro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, and Interuniversitary Research Center for Artificial Photosynthesis (Solar Chem, Messina Node), V. F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Ambra M Cancelliere
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, and Interuniversitary Research Center for Artificial Photosynthesis (Solar Chem, Messina Node), V. F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Kei Kamogawa
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 O-okayama, Meguro-Ku, Tokyo, 152-8550, Japan
| | - Scolastica Serroni
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, and Interuniversitary Research Center for Artificial Photosynthesis (Solar Chem, Messina Node), V. F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Fausto Puntoriero
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, and Interuniversitary Research Center for Artificial Photosynthesis (Solar Chem, Messina Node), V. F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Yusuke Tamaki
- Research Institute for Chemical Process Technology, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-Ku, Sendai, Miyagi, 983-8551, Japan
| | - Sebastiano Campagna
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, and Interuniversitary Research Center for Artificial Photosynthesis (Solar Chem, Messina Node), V. F. Stagno d'Alcontres 31, 98166, Messina, Italy.
| | - Osamu Ishitani
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 O-okayama, Meguro-Ku, Tokyo, 152-8550, Japan.
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739 8526, Japan.
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4
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Inagaki A. Development of Metal Complexes to Utilize Visible-Light Energy into Molecular Transformation. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Akiko Inagaki
- Department of Chemistry, Tokyo Metropolitan University
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Santoro A, Bella G, Cancelliere AM, Serroni S, Lazzaro G, Campagna S. Photoinduced Electron Transfer in Organized Assemblies—Case Studies. Molecules 2022; 27:molecules27092713. [PMID: 35566062 PMCID: PMC9102318 DOI: 10.3390/molecules27092713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 12/10/2022] Open
Abstract
In this review, photoinduced electron transfer processes in specifically designed assembled architectures have been discussed in the light of recent results reported from our laboratories. A convenient and useful way to study these systems is described to understand the rules that drive a light-induced charge-separated states and its subsequent decay to the ground state, also with the aim of offering a tutorial for young researchers. Assembled systems of covalent or supramolecular nature have been presented, and some functional multicomponent systems for the conversion of light energy into chemical energy have been discussed.
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Gamache MT, Auvray T, Kurth DG, Hanan GS. Dinuclear 2,4-di(pyridin-2-yl)-pyrimidine based ruthenium photosensitizers for hydrogen photo-evolution under red light. Dalton Trans 2021; 50:16528-16538. [PMID: 34698748 DOI: 10.1039/d1dt00868d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we report two dinuclear Ru(II) complexes C1 and C2 and compare them to their mononuclear analogues Ref1 and Ref2. The dinuclear species exhibit a much stronger absorption, longer excited-state lifetimes and higher luminescence quantum yields than the mononuclear complexes. In addition, C1 and C2 are easier to reduce. An estimation of the driving forces for the electron transfer processes relevant to photocatalytic hydrogen evolution suggests that C1 and Ref2 possess similar activity as photosensitizer (PS). Yet, the improved photophysical properties of C1 make it a more promising candidate for hydrogen evolution. In hydrogen evolution experiments, C1 indeed exhibits increased activity as PS, however, the catalytic system loses its activity after only a few hours. C2 is less active than the mononuclear complexes despite its superior photophysical properties. This observation is attributed to a lack of driving force for the electron transfer towards the catalyst. Further studies of the dinuclear complex C1 show that it is indeed the PS, which decomposes under the catalytic conditions, presumably due to the electron transfer towards the catalyst being the rate-limiting step.
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Affiliation(s)
- Mira T Gamache
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, 97070 Würzburg, Germany.,Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec, H2V-03B, Canada
| | - Thomas Auvray
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec, H2V-03B, Canada
| | - Dirk G Kurth
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Garry S Hanan
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec, H2V-03B, Canada
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Rupp MT, Shevchenko N, Hanan GS, Kurth DG. Enhancing the photophysical properties of Ru(II) complexes by specific design of tridentate ligands. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214127] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Ounalli C, Essid M, Bruno G, Santoro A, Abid S, Aloui Z. Synthesis, crystallographic structure, DFT computational studies and Hirschfeld surface analysis of a new tetranuclear anionic bromobismuthate(III): [C12H20N2]2Bi4Br16•2H2O. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Ohyama R, Mishima M, Inagaki A. Syntheses and structure of dinuclear metal complexes containing naphthyl-Ir bichromophore. Dalton Trans 2021; 50:12716-12722. [PMID: 34545880 DOI: 10.1039/d1dt01853a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel metal complexes were synthesized containing an Ir-cyclometalated bichromophore as a visible-light sensitizer. A new bichromophoric unit containing a naphthyl substituent and methyl substituents on the 2-phenylpyridine chelating ligand was synthesized and characterized for the first time. According to the increased crystallinity of the bichromophoric unit, novel Ir-M metal complexes (M = Pd, Mn, and Ir) were synthesized and fully characterized. The novel Ir-Pd complex maintained photocatalytic activity toward styrenes under visible-light irradiation, and polymerization with p-chlorostyrene, copolymerization with styrene and p-chlorostyrene furnished corresponding polymers.
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Affiliation(s)
- Ryo Ohyama
- Department of Chemistry, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, 192-0397 Tokyo, Japan.
| | - Masaki Mishima
- Department of Molecular Biophysics, Tokyo University of Pharmacy and Life Sciences, School of Pharmacy, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Akiko Inagaki
- Department of Chemistry, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, 192-0397 Tokyo, Japan.
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10
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Ounalli C, Essid M, Bruno G, Abid S, Santoro A, Aloui Z. Structural, vibrational, optical properties and theoretical studies of new noncentrosymmetric material: Bis(2-Amino-5-(methylthio)-1,3,4-thiadiazol-3-ium) pentachloroantimonate. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Weibull Modeling of Controlled Drug Release from Ag-PMA Nanosystems. Polymers (Basel) 2021; 13:polym13172897. [PMID: 34502937 PMCID: PMC8434431 DOI: 10.3390/polym13172897] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/21/2021] [Accepted: 08/24/2021] [Indexed: 01/22/2023] Open
Abstract
Traditional pharmacotherapy suffers from multiple drawbacks that hamper patient treatment such as antibiotic resistances or low drug selectivity and toxicity during systemic applications. Some functional hybrid nanomaterials are designed to handle the drug release process under remote-control. More attention has recently been paid to synthetic polyelectrolytes for their intrinsic properties which allow them to rearrange into compact structures, ideal to be used as drug carriers or probes influencing biochemical processes. The presence of Ag nanoparticles (NPs) in the Poly methyl acrylate (PMA) matrix leads to an enhancement of drug release efficiency, even using a low-power laser whose wavelength is far from the Ag Surface Plasmon Resonance (SPR) peak. Further, compared to the colloids, the nanofiber-based drug delivery system has shown shorter response time and more precise control over the release rate. The efficiency and timing of involved drug release mechanisms has been estimated by the Weibull distribution function, whose parameters indicate that the release mechanism of nanofibers obeys Fick's first law while a non-Fickian character controlled by diffusion and relaxation of polymer chains occurs in the colloidal phase.
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12
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13
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Rupp MT, Auvray T, Shevchenko N, Swoboda L, Hanan GS, Kurth DG. Substituted 2,4-Di(pyridin-2-yl)pyrimidine-Based Ruthenium Photosensitizers for Hydrogen Photoevolution under Red Light. Inorg Chem 2021; 60:292-302. [PMID: 33322895 DOI: 10.1021/acs.inorgchem.0c02955] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photocatalytic reduction of water to form hydrogen gas (H2) is a promising approach to collect, convert, and store solar energy. Typically, ruthenium tris(bipyridine) and its many derivatives are used as photosensitizers (PSs) in a variety of photocatalytic conditions. The bis(terpyridine) analogues, however, have only recently gained attention for this application because of their poor photophysical properties. Yet, by the introduction of electron-donating or -withdrawing groups on the terpyridine ligands, the photophysical and electrochemical properties can be considerably improved. In this study, we report a series of nonsymmetric 2,6-di(pyridin-2-yl)pyrimidine ligands with peripheral pyridine substituents in different positions and their corresponding ruthenium(II) complexes. The presence of the pyrimidine ring stabilizes the lowest unoccupied molecular orbital, leading to a red-shifted emission and prolonged excited-state lifetimes as well as higher luminescence quantum yields compared to analogous terpyridine complexes. Furthermore, all complexes are easier to reduce than the previously reported bis(terpyridine) complexes used as PSs. Interestingly, the pyridine substituent in the 4-pyrimidine position has a greater impact on both the photophysical and electrochemical properties. This correlation between the substitution pattern and properties of the complexes is further investigated by using time-dependent density functional theory. In hydrogen evolution experiments under blue- and red-light irradiation, all investigated complexes exhibit much higher activity compared to the previously reported ruthenium(II) bis(terpyridine) complexes, but none of the complexes are as stable as the literature compounds, presumably because of an additional decomposition pathway of the reduced PS competing with electron transfer from the reduced PS to the catalyst.
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Affiliation(s)
- Mira T Rupp
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2 V-03B, Canada.,Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, Würzburg 97070, Germany
| | - Thomas Auvray
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2 V-03B, Canada
| | - Natali Shevchenko
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2 V-03B, Canada
| | - Lukas Swoboda
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, Würzburg 97070, Germany
| | - Garry S Hanan
- Département de Chimie, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2 V-03B, Canada
| | - Dirk G Kurth
- Chemische Technologie der Materialsynthese, Julius-Maximilians-Universität Würzburg, Röntgenring 11, Würzburg 97070, Germany
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14
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Paul A, Ganguly T, Bar M, Baitalik S. Controlling the Direction of Intercomponent Energy Transfer by Appropriate Placement of Metals in Long-Lived Trinuclear Complexes of Fe(II), Ru(II), and Os(II). Inorg Chem 2021; 60:412-422. [PMID: 33350308 DOI: 10.1021/acs.inorgchem.0c03067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In this work, we report the synthesis, photophysics, and electrochemistry of a new array of trinuclear complexes, [(bpy)2Os(d-HIm-t)M(t-HIm-d)Os(bpy)2]6+ (M = FeII, RuII, and OsII), based on a previously reported bipyridine-terpyridine type bridge (d-HIm-t). Photophysical behavior of in situ generated trinuclear OsZnOs complex {[(bpy)2Os(d-HIm-t)Zn(t-HIm-d)Os(bpy)2]6+} was also investigated to understand the complicated photophysics of trinuclear array. Complexes display very rich redox properties demonstrating multiple metal-based oxidation and ligand-based reduction couples. The triads exhibit strong absorption throughout the entire UV-vis spectral region and also emit in the near-infrared domain (NIR) with a sufficiently long lifetime at ambient temperature. Intercomponent energy transfer, either from the periphery to the center or from the center to the periphery, depending upon the relative position of metals, was convincingly demonstrated through steady-state emission and lifetime measurements of the triads together with respective model complexes. Interestingly, Fe2+ does not worsen the emission behavior of the OsFeOs system to a great extent. Present trinuclear complexes act as a visible light absorbing antenna by funneling the absorbed light to the subunit(s) with the lowest energy excited state.
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Affiliation(s)
- Animesh Paul
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University Kolkata 700032, India
| | - Tanusree Ganguly
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University Kolkata 700032, India
| | - Manoranjan Bar
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University Kolkata 700032, India
| | - Sujoy Baitalik
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University Kolkata 700032, India
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15
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Trovato E, Di Pietro ML, Giannetto A, Dupeyre G, Lainé PP, Nastasi F, Puntoriero F, Campagna S. Designing expanded bipyridinium as redox and optical probes for DNA. Photochem Photobiol Sci 2020; 19:105-113. [PMID: 31930262 DOI: 10.1039/c9pp00418a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the light-switch behaviour of two head-to-tail expanded bipyridinium species as a function of their interaction with calf thymus DNA and polynucleotides. In particular, both DNA and polynucleotides containing exclusively adenine or guanine moieties quench the luminescence of the fused expanded bipyridinium species. This behaviour has been rationalized demonstrating that a reductive photoinduced electron transfer process takes place involving both adenine or guanine moieties. The charge separated state so produced recombines in the tens of picoseconds. These results could help in designing new organic substrates for application in DNA probing technology and lab on chip-based sensing systems.
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Affiliation(s)
- Emanuela Trovato
- Chromaleont S.r.l., Università degli Studi di Messina, Polo Annunziata, Viale Annunziata, Messina, 98168, Italy
| | - Maria Letizia Di Pietro
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali - ChiBioFarAm - Università di Messina, Viale F. Stagno d'Alcontres 31, Messina, 98166, Italy
| | - Antonino Giannetto
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali - ChiBioFarAm - Università di Messina, Viale F. Stagno d'Alcontres 31, Messina, 98166, Italy
| | - Gregory Dupeyre
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J-A de Baïf, Paris, F-75013, France
| | - Philippe P Lainé
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J-A de Baïf, Paris, F-75013, France
| | - Francesco Nastasi
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali - ChiBioFarAm - Università di Messina, Viale F. Stagno d'Alcontres 31, Messina, 98166, Italy
| | - Fausto Puntoriero
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali - ChiBioFarAm - Università di Messina, Viale F. Stagno d'Alcontres 31, Messina, 98166, Italy.
| | - Sebastiano Campagna
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche ed Ambientali - ChiBioFarAm - Università di Messina, Viale F. Stagno d'Alcontres 31, Messina, 98166, Italy
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16
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Bella G, Santoro A, Cordaro M, Nicolò F, Bruno G. Isoxazolone Reactivity Explained by Computed Electronic Structure Analysis. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Giovanni Bella
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale F. Stagno d'Alcontres 31 98166 Messina Italy
| | - Antonio Santoro
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale F. Stagno d'Alcontres 31 98166 Messina Italy
| | - Massimiliano Cordaro
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale F. Stagno d'Alcontres 31 98166 Messina Italy
| | - Francesco Nicolò
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale F. Stagno d'Alcontres 31 98166 Messina Italy
| | - Giuseppe Bruno
- Department of Chemical, Biological, Pharmaceutical and Environmental SciencesUniversity of Messina Viale F. Stagno d'Alcontres 31 98166 Messina Italy
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