1
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Kintzel B, Fittipaldi M, Böhme M, Cini A, Tesi L, Buchholz A, Sessoli R, Plass W. Spin-Electric Coupling in a Cobalt(II)-Based Spin Triangle Revealed by Electric-Field-Modulated Electron Spin Resonance Spectroscopy. Angew Chem Int Ed Engl 2021; 60:8832-8838. [PMID: 33511751 PMCID: PMC8048656 DOI: 10.1002/anie.202017116] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Indexed: 11/18/2022]
Abstract
A cobalt(II)-based spin triangle shows a significant spin-electric coupling. [Co3 (pytag)(py)6 Cl3 ]ClO4 ⋅3 py crystallizes in the acentric monoclinic space group P21 . The intra-triangle antiferromagnetic interaction, of the order of ca. -15 cm-1 (H=-JSa Sb ), leads to spin frustration. The two expected energy-degenerate ground doublets are, however, separated by a few wavenumbers, as a consequence of magnetic anisotropy and deviations from threefold symmetry. The Co3 planes of symmetry-related molecules are almost parallel, allowing for the determination of the spin-electric properties of single crystals by EFM-ESR spectroscopy. The spin-electric effect detected when the electric field is applied in the Co3 plane was revealed by a shift in the resonance field. It was quantified as ΔgE /E=0.11×10-9 m V-1 , which in terms of frequency corresponds to approximately 0.3 Hz m V-1 . This value is comparable to what was determined for a Cu3 triangle despite the antiferromagnetic interaction being 20 times larger for the latter.
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Affiliation(s)
- Benjamin Kintzel
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Maria Fittipaldi
- Department of Physics and AstronomyUniversity of Florence and INSTM UdRvia Sansone 1Sesto Fiorentino (FI)Italy
| | - Michael Böhme
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Alberto Cini
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
| | - Lorenzo Tesi
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
- Current address: Institute of Physical ChemistryUniversity of StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Axel Buchholz
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
| | - Roberta Sessoli
- Dipartimento di Chimica “Ugo Schiff”Universitá degli Studi FirenzeVia della Lastruccia 3–1350019Sesto Fiorentino (FI)Italy
| | - Winfried Plass
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldtstrasse 807743JenaGermany
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2
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Kintzel B, Fittipaldi M, Böhme M, Cini A, Tesi L, Buchholz A, Sessoli R, Plass W. Spin‐elektrische Kopplung in einem Cobalt(II)‐basierten Spindreieck, gezeigt mithilfe elektrisches‐Feld‐modulierter Elektronenspinresonanzspektroskopie. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Benjamin Kintzel
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Maria Fittipaldi
- Department of Physics and Astronomy University of Florence and INSTM UdR via Sansone 1 Sesto Fiorentino (FI) Italien
| | - Michael Böhme
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Alberto Cini
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
| | - Lorenzo Tesi
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
- Derzeitige Adresse: Institut für Physikalische Chemistry Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Axel Buchholz
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
| | - Roberta Sessoli
- Dipartimento di Chimica “Ugo Schiff” Universitá degli Studi Firenze Via della Lastruccia 3–13 50019 Sesto Fiorentino (FI) Italien
| | - Winfried Plass
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldtstraße 8 07743 Jena Deutschland
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3
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Cucinotta G, Poggini L, Giaconi N, Cini A, Gonidec M, Atzori M, Berretti E, Lavacchi A, Fittipaldi M, Chumakov AI, Rüffer R, Rosa P, Mannini M. Space Charge-Limited Current Transport Mechanism in Crossbar Junction Embedding Molecular Spin Crossovers. ACS Appl Mater Interfaces 2020; 12:31696-31705. [PMID: 32551478 PMCID: PMC8008390 DOI: 10.1021/acsami.0c07445] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Spin crossover complexes are among the most studied classes of molecular switches and have attracted considerable attention for their potential technological use as active units in multifunctional devices. A fundamental step toward their practical implementation is the integration in macroscopic devices adopting hybrid vertical architectures. First, the physical properties of technological interest shown by these materials in the bulk phase have to be retained once they are deposited on a solid surface. Herein, we describe the study of a hybrid molecular inorganic junction embedding the spin crossover complex [Fe(qnal)2] (qnal = quinoline-naphthaldehyde) as an active switchable thin film sandwiched within energy-optimized metallic electrodes. In these junctions, developed and characterized with the support of state of the art techniques including synchrotron Mössbauer source (SMS) spectroscopy and focused-ion beam scanning transmission electron microscopy, we observed that the spin state conversion of the Fe(II)-based spin crossover film is associated with a transition from a space charge-limited current (SCLC) transport mechanism with shallow traps to a SCLC mechanism characterized by the presence of an exponential distribution of traps concomitant with the spin transition temperature.
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Affiliation(s)
- Giuseppe Cucinotta
- Department of Chemistry
“U. Schiff” and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, FI 50019, Italy
| | - Lorenzo Poggini
- Department of Chemistry
“U. Schiff” and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, FI 50019, Italy
- CNRS, University of Bordeaux, ICMCB, UMR 5026, Pessac 33600, France
| | - Niccolò Giaconi
- Department of Chemistry
“U. Schiff” and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, FI 50019, Italy
| | - Alberto Cini
- Department of Physics and Astronomy and
INSTM Research Unit, University of Florence, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
| | - Mathieu Gonidec
- CNRS, University of Bordeaux, ICMCB, UMR 5026, Pessac 33600, France
| | - Matteo Atzori
- Department of Chemistry
“U. Schiff” and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, FI 50019, Italy
| | - Enrico Berretti
- Institute for Chemistry of OrganoMetallic
Compounds (ICCOM-CNR), Via Madonna del Piano, Sesto Fiorentino, FI 50019, Italy
| | - Alessandro Lavacchi
- Institute for Chemistry of OrganoMetallic
Compounds (ICCOM-CNR), Via Madonna del Piano, Sesto Fiorentino, FI 50019, Italy
| | - Maria Fittipaldi
- Department of Physics and Astronomy and
INSTM Research Unit, University of Florence, Via Sansone 1, Sesto Fiorentino, FI 50019, Italy
| | | | - Rudolf Rüffer
- ESRF-The European Synchrotron, Avenue des Martyrs 71, Grenoble 38000, France
| | - Patrick Rosa
- CNRS, University of Bordeaux, ICMCB, UMR 5026, Pessac 33600, France
| | - Matteo Mannini
- Department of Chemistry
“U. Schiff” and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, FI 50019, Italy
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4
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Cini A, Poggini L, Chumakov AI, Rüffer R, Spina G, Wattiaux A, Duttine M, Gonidec M, Fittipaldi M, Rosa P, Mannini M. Synchrotron-based Mössbauer spectroscopy characterization of sublimated spin crossover molecules. Phys Chem Chem Phys 2020; 22:6626-6637. [PMID: 32159166 DOI: 10.1039/c9cp04464g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The spin crossover (SCO) efficiency of [57Fe(bpz)2(phen)] (where bpz = bis(pyrazol-1-yl)borohydride and phen = 9,10-phenantroline) molecules deposited on gold substrates was investigated by means of synchrotron Mössbauer spectroscopy. The spin transition was driven thermally, or light induced via the LIESST (light induced excited spin-state trapping) effect. Both sets of measurements show that, once deposited on a gold substrate, the efficiency of the SCO mechanism is modified with respect to molecules in the bulk phase. A correlation in the distribution of hyperfine parameters in the sublimated films, not evidenced so far in the bulk phase, is reported. This translates into geometrical distortions of the first coordination sphere of the iron atom that seem to correlate with the decreased spin conversion. The work reported clearly shows the potentiality of synchrotron Mössbauer spectroscopy for the characterization of nanostructured Fe-based SCO systems, thus resulting as a key tool in view of their applications in innovative nanoscale devices.
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Affiliation(s)
- Alberto Cini
- Department of Physics and Astronomy, University of Florence and INSTM Research Unit of Florence, via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy.
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5
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Cappa F, Cini A, Pepiciello I, Petrocelli I, Inghilesi AF, Anfora G, Dani FR, Bortolotti L, Wen P, Cervo R. Female volatiles as sex attractants in the invasive population of Vespa velutina nigrithorax. J Insect Physiol 2019; 119:103952. [PMID: 31568763 DOI: 10.1016/j.jinsphys.2019.103952] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 09/18/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Due to its huge invasion potential and specialization in honeybee predation, the invasive hornet Vespa velutina nigrithorax represents a high-concern species under both an ecological and economical perspective. In light of the development of specific odorant attractants to be used in sustainable control strategies, we carried out both behavioural assays and chemical analyses to investigate the possibility that, in the invasive population of V. velutina nigrithorax, reproductive females emit volatile pheromones to attract males, as demonstrated in a Chinese non-invasive population. We focused on the secretions produced by sternal and venom glands; because of the volatility and complexity of their composition, both of them could potentially allow an attraction and a species-specific response, decreasing therefore non-target species by-catches. Results of chemical analyses and behavioural assays showed that venom volatiles, although population-specific, are unlikely candidates as male attractants since they do not differ in composition or in quantity between reproductive females and workers and do not attract males. Conversely, sternal gland secretion differs between female castes for the presence of some ketoacids exclusive of gynes already reported as sex pheromones for the non-invasive subspecies V. velutina auraria. Despite such a difference, males are attracted by the sternal gland secretion of both workers and gynes. These results provide a first step to understand the reproductive biology of V. velutina nigrithorax in its invasive range and to develop effective and sustainable management strategies for the species.
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Affiliation(s)
- Federico Cappa
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy.
| | - A Cini
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy; Centre for Biodiversity and Environment Research, University College London, Gower Street, London WC1E 6BT, UK
| | - I Pepiciello
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy
| | - I Petrocelli
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy
| | - A F Inghilesi
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy
| | - G Anfora
- Center Agriculture Food Environment (C3A), Università di Trento, Via E. Mach 1, 38010 San Michele a/A, Trento, Italy; Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele a/A, Trento, Italy
| | - F R Dani
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy
| | - L Bortolotti
- CREA - Centro di ricerca Agricoltura e Ambiente, Unità di ricerca di apicoltura e bachicoltura (API), Via di Saliceto 80, 40128 Bologna, Italy
| | - P Wen
- Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Science, Qinsong Road 21, Panlong, Kunming, Yunnan 650223, China
| | - R Cervo
- Dipartimento di Biologia, Università di Firenze, Via Madonna del Piano, 50019 Sesto F.no (Firenze), Italy
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Giofrè D, Provazza S, Angione D, Cini A, Menazza C, Oppi F, Cornoldi C. The intellectual profile of children with autism spectrum disorders may be underestimated: A comparison between two different batteries in an Italian sample. Res Dev Disabil 2019; 90:72-79. [PMID: 31082681 DOI: 10.1016/j.ridd.2019.04.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 02/05/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Intelligence measures are typically used in the assessment of children with autism spectrum disorders (ASD), but there is a paucity of research on the implications of such testing. In the present study, we examined children with ASD using two of the most largely adopted instruments, i.e., the WISC-IV, arguably the most utilized scale in the world; and the Leiter-3, a nonverbal scale that also excludes, from the IQ calculation, working memory and processing speed, which are points of weakness in ASD. Results showed that IQ and indices of these two batteries are strongly correlated. However, the WISC-IV IQ might underestimates the potential of children with ASD, particularly in children with a low functioning profile. These hold true for both the full scale IQ and three out of four indices of the WISC-IV, with remarkable implications for both assessment and treatment of these children. Practitioners working with children with ASD should be aware that the battery that they are using might severely affect the estimation of these children's potential.
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Affiliation(s)
- D Giofrè
- Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK.
| | - S Provazza
- Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK
| | - D Angione
- Department of General Psychology, University of Padova, Padova, Italy
| | - A Cini
- Diagnosis and Research Center in Autism (CDCRA), ULSS 9, Scaligera, Italy
| | - C Menazza
- Center for Developmental Age and Autism, Polo Blu, Padova, Italy
| | - F Oppi
- Diagnosis and Research Center in Autism (CDCRA), ULSS 9, Scaligera, Italy
| | - C Cornoldi
- Department of General Psychology, University of Padova, Padova, Italy
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7
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Fittipaldi M, Cini A, Annino G, Vindigni A, Caneschi A, Sessoli R. Electric field modulation of magnetic exchange in molecular helices. Nat Mater 2019; 18:329-334. [PMID: 30778229 DOI: 10.1038/s41563-019-0288-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 01/08/2019] [Indexed: 06/09/2023]
Abstract
The possibility to operate on magnetic materials through the application of electric rather than magnetic fields-promising faster, more compact and energy efficient circuits-continues to spur the investigation of magnetoelectric effects. Symmetry considerations, in particular the lack of an inversion centre, characterize the magnetoelectric effect. In addition, spin-orbit coupling is generally considered necessary to make a spin system sensitive to a charge distribution. However, a magnetoelectric effect not relying on spin-orbit coupling is appealing for spin-based quantum technologies. Here, we report the detection of a magnetoelectric effect that we attribute to an electric field modulation of the magnetic exchange interaction without atomic displacement. The effect is visible in electron paramagnetic resonance absorption of molecular helices under electric field modulation and confirmed by specific symmetry properties and spectral simulation.
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Affiliation(s)
- Maria Fittipaldi
- Department of Physics and Astronomy and INSTM Research Unit, University of Florence, Sesto Fiorentino, Italy.
| | - Alberto Cini
- Department of Physics and Astronomy and INSTM Research Unit, University of Florence, Sesto Fiorentino, Italy
| | - Giuseppe Annino
- Istituto per i Processi Chimico-Fisici, IPCF-CNR, Pisa, Italy
| | | | - Andrea Caneschi
- DIEF-Department Industrial Engineering and INSTM Research Unit, University of Florence, Florence, Italy
- Department of Chemistry 'Ugo Schiff' and INSTM Research Unit, University of Florence, Sesto Fiorentino, Italy
| | - Roberta Sessoli
- Department of Chemistry 'Ugo Schiff' and INSTM Research Unit, University of Florence, Sesto Fiorentino, Italy.
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8
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Molfini M, Redolfi de Zan L, Campanaro A, Rossi de Gasperis S, Mosconi F, Chiari S, Cini A, Antonini G, Solano E, Audisio PA, Roversi PF, Sabbatini Peverieri G, Carpaneto GM, Mason F, Bologna MA, Mancini E. A first assessment of genetic variability in the longhorn beetle Rosalia alpina (Coleoptera: Cerambycidae) from the Italian Apennines. The European Zoological Journal 2018. [DOI: 10.1080/24750263.2018.1433243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- M. Molfini
- Dipartimento di Scienze, Università Roma Tre, Roma, Italy
| | - L. Redolfi de Zan
- Centro Nazionale per lo Studio e la Conservazione della Biodiversità Forestale “Bosco Fontana” Carabinieri, Verona, Italy
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
| | - A. Campanaro
- Centro Nazionale per lo Studio e la Conservazione della Biodiversità Forestale “Bosco Fontana” Carabinieri, Verona, Italy
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
| | | | - F. Mosconi
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - S. Chiari
- Dipartimento di Scienze, Università Roma Tre, Roma, Italy
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
| | - A. Cini
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
- Centre for Biodiversity and Environment Research, University College London, London, UK
| | - G. Antonini
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - E. Solano
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - P. A. Audisio
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - P. F. Roversi
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
| | - G. Sabbatini Peverieri
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria - Centro di ricerca Difesa e Certificazione (CREA-DC), Firenze, Italy
| | | | - F. Mason
- Centro Nazionale per lo Studio e la Conservazione della Biodiversità Forestale “Bosco Fontana” Carabinieri, Verona, Italy
| | - M. A. Bologna
- Dipartimento di Scienze, Università Roma Tre, Roma, Italy
| | - E. Mancini
- Dipartimento di Scienze, Università Roma Tre, Roma, Italy
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Abstract
Abstract
Magnetic nanoparticles (MNPs) of spinel type iron oxide (of approximately 4 nm) mineralized inside the internal cavity of a mini ferritin-type protein have been investigated by means of electron magnetic resonance (EMR) spectroscopy. EMR measurements have been recorded at different temperatures in perpendicular and parallel configurations. The spectra have been interpreted using an approach based on the giant spin model. We confirm the quantum behavior of the MNPs, moreover, the thermal evolution of the spin system in terms of population of excited spin states is showed.
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Affiliation(s)
- Alberto Cini
- INSTM and Department of Physics and Astronomy, University of Florence, via Sansone 1, 50019 Sesto Fiorentino, Italy
| | - Pierpaolo Ceci
- Institute of Molecular Biology and Pathology, CNR – National Research Council of Italy, 00185 Rome, Italy
| | - Elisabetta Falvo
- Institute of Molecular Biology and Pathology, CNR – National Research Council of Italy, 00185 Rome, Italy
| | - Dante Gatteschi
- INSTM and Department of Chemistry “U. Schiff”, University of Florence, via della Lastruccia, 3-13 50019 Sesto Fiorentino, Italy
| | - Maria Fittipaldi
- INSTM and Department of Physics and Astronomy, University of Florence, via Sansone 1, 50019 Sesto Fiorentino, Italy
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Cavigli L, Tatini F, Borri C, Ratto F, Centi S, Cini A, Lelli B, Matteini P, Pini R. Preparation and Photoacoustic Analysis of Cellular Vehicles Containing Gold Nanorods. J Vis Exp 2016:53328. [PMID: 27167995 PMCID: PMC4942024 DOI: 10.3791/53328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Gold nanorods are attractive for a range of biomedical applications, such as the photothermal ablation and the photoacoustic imaging of cancer, thanks to their intense optical absorbance in the near-infrared window, low cytotoxicity and potential to home into tumors. However, their delivery to tumors still remains an issue. An innovative approach consists of the exploitation of the tropism of tumor-associated macrophages that may be loaded with gold nanorods in vitro. Here, we describe the preparation and the photoacoustic inspection of cellular vehicles containing gold nanorods. PEGylated gold nanorods are modified with quaternary ammonium compounds, in order to achieve a cationic profile. On contact with murine macrophages in ordinary Petri dishes, these particles are found to undergo massive uptake into endocytic vesicles. Then these cells are embedded in biopolymeric hydrogels, which are used to verify that the stability of photoacoustic conversion of the particles is retained in their inclusion into cellular vehicles. We are confident that these results may provide new inspiration for the development of novel strategies to deliver plasmonic particles to tumors.
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Affiliation(s)
- Lucia Cavigli
- Institute of Applied Physics, Italian National Research Council
| | | | - Claudia Borri
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Firenze
| | - Fulvio Ratto
- Institute of Applied Physics, Italian National Research Council;
| | - Sonia Centi
- Institute of Applied Physics, Italian National Research Council
| | - Alberto Cini
- Department of Physics and Astronomy, University of Florence, Sesto Fiorentino
| | - Beatrice Lelli
- Department of Pharmacy and Biotechnology, University of Bologna
| | - Paolo Matteini
- Institute of Applied Physics, Italian National Research Council
| | - Roberto Pini
- Institute of Applied Physics, Italian National Research Council
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11
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Baracchi D, Mazza G, Cini A, Petrocelli I, Bin Hashim R, Turillazzi S. Social biology ofParischnogaster striatula(Hymenoptera: Stenogastrinae). Tropical Zoology 2013. [DOI: 10.1080/03946975.2013.808005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Cini A, Bruschini C, Poggi L, Cervo R. Fight or fool? Physical strength, instead of sensory deception, matters in host nest invasion by a wasp social parasite. Anim Behav 2011. [DOI: 10.1016/j.anbehav.2011.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Mazza G, Cini A, Cervo R, Longo S. Just phoresy? Reduced lifespan in red palm weevilsRhynchophorus ferrugineus(Coleoptera: Curculionidae) infested by the miteCentrouropoda almerodai(Uroactiniinae: Uropodina). ACTA ACUST UNITED AC 2011. [DOI: 10.1080/11250003.2010.509135] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bottai M, Cini A, Talini D, Dini F, Berti S, Vincentini M, Cosentino E, Taddeo D. [Silica risk in construction industry: an investigation on raw materials]. G Ital Med Lav Ergon 2007; 29:738-739. [PMID: 18409933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Typical construction activities like demolition, excavation and sanding can expose workers to silica, but there are few investigations carried out with the aim of evaluating the silica content in raw materials used for these activities (mortars, plasters, cement...). Our intervention has been directed in looking for free crystalline silica in samples of raw materials. We have measured the silica content in these materials comparing declared and real composition found in the products. Our intent was to obtain more information about the working activities which expose workers to free crystalline silica in construction industry and to highlight the silica presence in raw materials also when the companies don't declare it, against labeling rules based on Italian law D.lgs 65/03.
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Affiliation(s)
- M Bottai
- UF. PSLL, Dipartimento della Prevenzione, ASL 5 di Pisa
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15
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Dapporto L, Cini A, Palagi E, Morelli M, Simonti A, Turillazzi S. Behaviour and chemical signature of pre-hibernating females of Polistes dominulus infected by the strepsipteran Xenos vesparum. Parasitology 2006; 134:545-52. [PMID: 17121685 DOI: 10.1017/s0031182006001739] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2006] [Revised: 09/30/2006] [Accepted: 10/02/2006] [Indexed: 11/06/2022]
Abstract
Polistes dominulus are social wasps which are the host of the strepsipteran endoparasite Xenos vesparum. In the hibernating phase, unparasitized and parasitized wasps leave natal nests and aggregate together in sheltered quarters. In aggregations, wasps are socially active, and some individuals perform helping behaviour. Here we investigated if castrated parasitized wasps perform worker tasks in mixed aggregations. Moreover, by gas chromatography and mass spectrometry, we examined the cuticular hydrocarbons of unparasitized and parasitized wasps to evaluate if the infection alters the composition of cuticular waxes that are recognition cues in social insects. In clusters, infected females do not perform helping behaviour and they are less active than unparasitized wasps. Cuticular hydrocarbons are slightly differentiated between unparasitized and parasitized wasps but, generally, unparasitized wasps are more similar to wasps infected by Xenos females compared to wasps infected by Xenos males. Wasps infected by Xenos males do not usually survive the winter. This chemical similarity is probably a consequence of the similar physiological condition of unparasitized and female-affected Polistes wasps. At this stage, it is difficult to affirm whether these modifications are a true parasite manipulation or a consequence of infection.
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Affiliation(s)
- L Dapporto
- Centro Interdipartimentale Museo di Storia Naturale e del Territorio dell'Università di Pisa, Via Roma 79, 56011 Calci (PI), Italy.
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16
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Legrottaglie R, Mannelli A, Rizzi V, Cini A, Agrimi P. Isolation and characterization of cytopathic strains of rotavirus from hares (Lepus europaeus). New Microbiol 1997; 20:135-40. [PMID: 9208423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Ten cytopathic rotavirus were recovered from stools of leverets affected by an enteric syndrome. The ten isolates, examined by means of ELISA and SDS-PA-GE, were identified as group A rotaviruses.
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Affiliation(s)
- R Legrottaglie
- Dipartimento di Patologia Animale, Università degli Studi di Pisa, Italy
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17
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Rizzi V, Legrottaglie R, Cini A, Agrimi P. Electrophoretic typing of some strains of enteric viruses isolated in rabbits suffering from diarrhoea. New Microbiol 1995; 18:77-81. [PMID: 7760761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Fifty strains of enteric viruses were isolated on MA-104 cell cultures from the diarrhoeic stools of rabbits from Tuscan and Umbrian breedings. Four of these were identified by means of serological and electrophoretical assays as Group A rotavirus; one produced a negative result in the ELISA test and an electrophoretic pattern related to reovirus.
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Affiliation(s)
- V Rizzi
- Dipartimento di Patologia Animale, Profilassi e Igiene degli Alimenti, Università degli Studi di Pisa, Italy
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18
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Hugues B, Lefevre JR, Plissier M, Cini A. Distribution of viral and bacterial densities in sea water near a costal discharge of treated domestic sewage. Zentralbl Bakteriol Mikrobiol Hyg B 1981; 173:509-16. [PMID: 7324614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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19
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Cini A, Fila G. [The efficacy of specific immunoglobulins in the treatment of measles]. Minerva Pediatr 1977; 29:1889-96. [PMID: 927407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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20
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Chasey WC, Barth J, Martin H, Cini A, Pupke W. Stabilometer computerized analog recording system for studying gross motor skill learning. Res Q 1976; 47:524-5. [PMID: 1069343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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