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Limosani F, Tessore F, Forni A, Lembo A, Di Carlo G, Albanese C, Bellucci S, Tagliatesta P. Nonlinear Optical Properties of Zn(II) Porphyrin, Graphene Nanoplates, and Ferrocene Hybrid Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5427. [PMID: 37570131 PMCID: PMC10419410 DOI: 10.3390/ma16155427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/06/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Abstract
Following some previous work by some of us on the second order nonlinear optical (NLO) properties of Zn(II) meso-tetraphenylporphyrin (ZnP), fullerene, and ferrocene (Fc) diads and triads, in the present research, we explore the NLO response of some new hybrids with two-dimensional graphene nanoplates (GNP) instead of a zero-dimensional fullerene moiety as the acceptor unit. The experimental data, collected by Electric Field Induced Second Harmonic generation (EFISH) technique in CH2Cl2 solution with a 1907 nm incident wavelength, combined with Coupled-Perturbed (CP) and Finite Field (FF) Density Functional Theory (DFT) calculations, show a strongly enhanced contribution of the cubic electronic term γ(-2ω; ω, ω, 0), due to the extended π-conjugation of the carbonaceous acceptor moiety.
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Affiliation(s)
- Francesca Limosani
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (F.L.); (A.L.); (P.T.)
| | - Francesca Tessore
- Department of Chemistry, University of Milan, Via C. Golgi 19, 20133 Milan, Italy; (G.D.C.); (C.A.)
| | - Alessandra Forni
- CNR-SCITEC, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, Via Golgi 19, 20133 Milan, Italy;
| | - Angelo Lembo
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (F.L.); (A.L.); (P.T.)
| | - Gabriele Di Carlo
- Department of Chemistry, University of Milan, Via C. Golgi 19, 20133 Milan, Italy; (G.D.C.); (C.A.)
| | - Cecilia Albanese
- Department of Chemistry, University of Milan, Via C. Golgi 19, 20133 Milan, Italy; (G.D.C.); (C.A.)
| | - Stefano Bellucci
- INFN-National Laboratories of Frascati Via Enrico Fermi 54, 00044 Frascati, Italy;
| | - Pietro Tagliatesta
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (F.L.); (A.L.); (P.T.)
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Maynard JRJ, Galmés B, Stergiou AD, Symes MD, Frontera A, Goldup SM. Anion-π Catalysis Enabled by the Mechanical Bond. Angew Chem Int Ed Engl 2022; 61:e202115961. [PMID: 35040543 PMCID: PMC9303940 DOI: 10.1002/anie.202115961] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 12/13/2022]
Abstract
We report a series of rotaxane‐based anion–π catalysts in which the mechanical bond between a bipyridine macrocycle and an axle containing an NDI unit is intrinsic to the activity observed, including a [3]rotaxane that catalyses an otherwise disfavoured Michael addition in >60 fold selectivity over a competing decarboxylation pathway that dominates under Brønsted base conditions. The results are rationalized by detailed experimental investigations, electrochemical and computational analysis.
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Affiliation(s)
- John R J Maynard
- Chemistry, University of Southampton, Highfield, Southampton, S017 1BJ, UK
| | - Bartomeu Galmés
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122, Palma de Mallorca, Baleares, Spain
| | - Athanasios D Stergiou
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow, G12 8QQ, UK
| | - Mark D Symes
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow, G12 8QQ, UK
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122, Palma de Mallorca, Baleares, Spain
| | - Stephen M Goldup
- Chemistry, University of Southampton, Highfield, Southampton, S017 1BJ, UK
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Functionalization of Gold Nanoparticles with Ru-Porphyrin and Their Selectivity in the Oligomerization of Alkynes. MATERIALS 2022; 15:ma15031207. [PMID: 35161151 PMCID: PMC8839176 DOI: 10.3390/ma15031207] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 11/16/2022]
Abstract
Gold nanoparticles (AuNPs) were functionalized by ruthenium porphyrins through a sulfur/gold covalent bond using a three-steps reaction. The catalyst was characterized by scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) in order to control the binding of ruthenium porphyrin on AuNPs’ surface. The catalyst was tested and compared with an analog system not bound to AuNPs in the oligomerization reaction using 1-phenylacetylene as the substrate.
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Study of Graphene Epoxy/Nanoplatelets Thin Films Subjected to Aging in Corrosive Environments. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6020039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The corrosion of metallic devices and degradation of plastic materials are a cause of great concern for companies and countries’ economies; it is necessary to contrast these phenomena by studying innovative methodologies and techniques. A simple solution lies in the realization of materials that can resist corrosive environments and be used as coatings to prevent, or at least delay, deterioration. The purpose of this work was to study the behavior of an epoxy resin, in thin film form, exposed to corrosive chemicals. In particular, the samples were subjected to aging of 31 days in dilute sulfuric acid (H2SO4) and in an aqueous solution of potassium chloride (KCl). Subsequently, thin films of Epoxy/graphene nanoplatelets (GNP) composite material have been subjected to the same conditions: it was investigated how these samples respond to the corrosive environment. We found that the addition of carbonaceous nanofillers prolongs in time the ability of the material to resist the attack of chemical agents.
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Limosani F, Tessore F, Di Carlo G, Forni A, Tagliatesta P. Nonlinear Optical Properties of Porphyrin, Fullerene and Ferrocene Hybrid Materials. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4404. [PMID: 34442930 PMCID: PMC8401996 DOI: 10.3390/ma14164404] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/17/2022]
Abstract
In this research, we investigated the second-order nonlinear optical (NLO) properties of multicomponent hybrid materials formed by meso-tetraphenylporphyrin P (both as free base and ZnII complex), carrying in 2 or 2,12 β-pyrrolic position an electron donor ferrocene (Fc), and/or an electron acceptor fullerene (C60) moiety, connected to the porphyrin core via an ethynyl or an ethynylphenyl spacer. We measured the NLO response by the electric-field-induced second-harmonic generation (EFISH) technique in CH2Cl2 solution with a 1907 nm incident wavelength, recording for all the investigated compounds unexpected negative values of μβ1907. Since density functional theory (DFT) calculations evidenced for P-Fc dyads almost null ground state dipole moments and very low values for P-C60 dyads and Fc-P-C60 triads, our EFISH results suggested a significant contribution to γEFISH of the purely electronic cubic term γ(-2ω; ω, ω, 0), which prevails on the quadratic dipolar orientational one μβ(-2ω; ω, ω)/5kT, as confirmed by computational evidence.
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Affiliation(s)
- Francesca Limosani
- Photonics Micro and Nanostructures Laboratory, Physical Technologies for Safety and Health Division, Fusion and Technologies for Nuclear Safety and Security Department, ENEA C.R. Frascati, Via E. Fermi 45, 00044 Frascati, Rome, Italy;
| | - Francesca Tessore
- Department of Chemistry, University of Milan, INSTM Research Unit, Via C. Golgi 19, 20133 Milan, Italy;
| | - Gabriele Di Carlo
- Department of Chemistry, University of Milan, INSTM Research Unit, Via C. Golgi 19, 20133 Milan, Italy;
| | - Alessandra Forni
- CNR-SCITEC, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, c/o University of Milan, Via Golgi 19, 20133 Milan, Italy;
| | - Pietro Tagliatesta
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
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Limosani F, Kaur R, Cataldo A, Bellucci S, Micciulla F, Zanoni R, Lembo A, Wang B, Pizzoferrato R, Guldi DM, Tagliatesta P. Designing Cascades of Electron Transfer Processes in Multicomponent Graphene Conjugates. Angew Chem Int Ed Engl 2020; 59:23706-23715. [PMID: 32886436 PMCID: PMC7756474 DOI: 10.1002/anie.202008820] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Indexed: 11/21/2022]
Abstract
A novel family of nanocarbon-based materials was designed, synthesized, and probed within the context of charge-transfer cascades. We integrated electron-donating ferrocenes with light-harvesting/electron-donating (metallo)porphyrins and electron-accepting graphene nanoplates (GNP) into multicomponent conjugates. To control the rate of charge flow between the individual building blocks, we bridged them via oligo-p-phenyleneethynylenes of variable lengths by β-linkages and the Prato-Maggini reaction. With steady-state absorption, fluorescence, Raman, and XPS measurements we realized the basic physico-chemical characterization of the photo- and redox-active components and the multicomponent conjugates. Going beyond this, we performed transient absorption measurements and corroborated by single wavelength and target analyses that the selective (metallo)porphyrin photoexcitation triggers a cascade of charge transfer events, that is, charge separation, charge shift, and charge recombination, to enable the directed charge flow. The net result is a few nanosecond-lived charge-separated state featuring a GNP-delocalized electron and a one-electron oxidized ferrocenium.
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Affiliation(s)
- Francesca Limosani
- Fusion and Nuclear DepartmentPhotonics Micro and Nanostructures LaboratoryENEAVia E. Fermi 4500044 FrascatiRomeItaly
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataVia della Ricerca Scientifica 100133RomeItaly
| | - Ramandeep Kaur
- Interdisciplinary Center for Molecular MaterialsDepartment of Chemistry and PharmacyFriedrich-Alexander University Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
| | - Antonino Cataldo
- Department of Information EngineeringPolytechnic University of MarcheVia Brecce Bianche, 160131AnconaItaly
- INFN- National laboratories of FrascatiVia Enrico Fermi 4000044 FrascatiRomeItaly
| | - Stefano Bellucci
- INFN- National laboratories of FrascatiVia Enrico Fermi 4000044 FrascatiRomeItaly
| | | | - Robertino Zanoni
- Department of ChemistryUniversity of Rome “La Sapienza”Piazzale Aldo Moro 500185RomeItaly
| | - Angelo Lembo
- Department of Drug Metabolism and PharmacoKineticIRBM SpAVia Pontina km 30.60000071 PomeziaRomeItaly
| | - Bingzhe Wang
- Interdisciplinary Center for Molecular MaterialsDepartment of Chemistry and PharmacyFriedrich-Alexander University Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
| | - Roberto Pizzoferrato
- Department of Industrial EngineeringUniversity of Rome Tor VergataVia del Politecnico 100133RomeItaly
| | - Dirk M. Guldi
- Interdisciplinary Center for Molecular MaterialsDepartment of Chemistry and PharmacyFriedrich-Alexander University Erlangen-NürnbergEgerlandstrasse 391058ErlangenGermany
| | - Pietro Tagliatesta
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataVia della Ricerca Scientifica 100133RomeItaly
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