1
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Malatesta M, Fornasier E, Di Salvo ML, Tramonti A, Zangelmi E, Peracchi A, Secchi A, Polverini E, Giachin G, Battistutta R, Contestabile R, Percudani R. One substrate many enzymes virtual screening uncovers missing genes of carnitine biosynthesis in human and mouse. Nat Commun 2024; 15:3199. [PMID: 38615009 PMCID: PMC11016064 DOI: 10.1038/s41467-024-47466-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 03/26/2024] [Indexed: 04/15/2024] Open
Abstract
The increasing availability of experimental and computational protein structures entices their use for function prediction. Here we develop an automated procedure to identify enzymes involved in metabolic reactions by assessing substrate conformations docked to a library of protein structures. By screening AlphaFold-modeled vitamin B6-dependent enzymes, we find that a metric based on catalytically favorable conformations at the enzyme active site performs best (AUROC Score=0.84) in identifying genes associated with known reactions. Applying this procedure, we identify the mammalian gene encoding hydroxytrimethyllysine aldolase (HTMLA), the second enzyme of carnitine biosynthesis. Upon experimental validation, we find that the top-ranked candidates, serine hydroxymethyl transferase (SHMT) 1 and 2, catalyze the HTMLA reaction. However, a mouse protein absent in humans (threonine aldolase; Tha1) catalyzes the reaction more efficiently. Tha1 did not rank highest based on the AlphaFold model, but its rank improved to second place using the experimental crystal structure we determined at 2.26 Å resolution. Our findings suggest that humans have lost a gene involved in carnitine biosynthesis, with HTMLA activity of SHMT partially compensating for its function.
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Affiliation(s)
- Marco Malatesta
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | | | - Martino Luigi Di Salvo
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti and Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, Rome, Italy
| | - Angela Tramonti
- Institute of Molecular Biology and Pathology, Italian National Research Council, Rome, Italy
| | - Erika Zangelmi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Alessio Peracchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Andrea Secchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Eugenia Polverini
- Department of Mathematical, Physical and Computer Sciences, University of Parma, Parma, Italy
| | - Gabriele Giachin
- Department of Chemical Sciences, University of Padua, Padova, Italy
| | | | - Roberto Contestabile
- Istituto Pasteur Italia-Fondazione Cenci Bolognetti and Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, Rome, Italy.
| | - Riccardo Percudani
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy.
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2
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Zangelmi E, Ruffolo F, Dinhof T, Gerdol M, Malatesta M, Chin JP, Rivetti C, Secchi A, Pallitsch K, Peracchi A. Deciphering the role of recurrent FAD-dependent enzymes in bacterial phosphonate catabolism. iScience 2023; 26:108108. [PMID: 37876809 PMCID: PMC10590968 DOI: 10.1016/j.isci.2023.108108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/30/2023] [Accepted: 09/27/2023] [Indexed: 10/26/2023] Open
Abstract
Phosphonates-compounds containing a direct C-P bond-represent an important source of phosphorus in some environments. The most common natural phosphonate is 2-aminoethylphosphonate (AEP). Many bacteria can break AEP down through specialized "hydrolytic" pathways, which start with the conversion of AEP into phosphonoacetaldehyde (PAA), catalyzed by the transaminase PhnW. However, the substrate scope of these pathways is very narrow, as PhnW cannot process other common AEP-related phosphonates, notably N-methyl AEP (M1AEP). Here, we describe a heterogeneous group of FAD-dependent oxidoreductases that efficiently oxidize M1AEP to directly generate PAA, thus expanding the versatility and usefulness of the hydrolytic AEP degradation pathways. Furthermore, some of these enzymes can also efficiently oxidize plain AEP. By doing so, they surrogate the role of PhnW in organisms that do not possess the transaminase and create novel versions of the AEP degradation pathways in which PAA is generated solely by oxidative deamination.
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Affiliation(s)
- Erika Zangelmi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Francesca Ruffolo
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Tamara Dinhof
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
- Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, 1090 Vienna, Austria
| | - Marco Gerdol
- Department of Life Sciences, University of Trieste, Via Giorgieri 5, 34127 Trieste, Italy
| | - Marco Malatesta
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Jason P. Chin
- School of Biological Sciences and Institute for Global Food Security, Queen’s University Belfast, 19 Chlorine Gardens, BT9 5DL Belfast, UK
| | - Claudio Rivetti
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Andrea Secchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
| | - Katharina Pallitsch
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Alessio Peracchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy
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3
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Riboni N, Bianchi F, Scaccaglia M, Bisceglie F, Secchi A, Massera C, Luches P, Careri M. A novel multiwalled carbon nanotube-cyclodextrin nanocomposite for solid-phase microextraction-gas chromatography-mass spectrometry determination of polycyclic aromatic hydrocarbons in snow samples. Mikrochim Acta 2023; 190:212. [PMID: 37171627 PMCID: PMC10181969 DOI: 10.1007/s00604-023-05799-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/13/2023] [Indexed: 05/13/2023]
Abstract
Novel solid-phase microextraction coatings based on the use of multiwalled carbon nanotube-cyclodextrin (MWCNT-CD) nanocomposites were developed for the determination of 16-priority polycyclic aromatic hydrocarbons at ultratrace levels in snow samples. The performance of both β- and γ-CD was tested to increase the detection capabilities towards the heaviest and most lipophilic compounds, i.e., five- and six-ring PAHs. To facilitate the interactions of MWCNTs with CDs, an oxidation procedure using both HNO3 and H2O2 was applied, obtaining superior results using MWCNTs-H2O2-γ-CD fiber. Detection and quantitation limits below 0.7 and 2.3 ng/L, RSD lower than 21%, and recoveries of 88(± 2)-119.8(± 0.4)% proved the reliability of the developed method for the determination of PAHs at ultratrace levels. The complexation capability of the γ-CD was also demonstrated in solution by NMR and fluorescence spectroscopy studies and at solid state by XRD analysis. Finally, snow samples collected in the ski area of Dolomiti di Brenta were analyzed, showing a different distribution of the 16 priority PAHs, being naphthalene, phenanthrene, fluoranthene, and pyrene the only compounds detected in all the analyzed samples.
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Affiliation(s)
- N Riboni
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy.
| | - F Bianchi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy.
- University of Parma, Center for Energy and Environment (CIDEA), Parco Area delle Scienze 42, 43124, Parma, Italy.
| | - M Scaccaglia
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - F Bisceglie
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - A Secchi
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - C Massera
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - P Luches
- Nanoscience Institute, CNR, via G. Campi 213/A, 41125, Modena, Italy
| | - M Careri
- University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area delle Scienze 17/A, 43124, Parma, Italy
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4
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Giovanardi G, Scarica G, Pirovano V, Secchi A, Cera G. Gold(I)-catalysed hydroarylations of alkynes for the synthesis of inherently chiral calix[4]arenes. Org Biomol Chem 2023; 21:4072-4083. [PMID: 37128860 DOI: 10.1039/d3ob00603d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We describe the first gold(I)-catalysed intramolecular hydroarylation of alkynes for the straightforward synthesis of inherently chiral calix[4]arenes. This step- and atom-economical approach, which exploits a formal meta-functionalisation of the calix[4]arene macrocycle, is able to deliver an ample family of N-heterocyclic, chiral compounds in high yields and functional group tolerance.
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Affiliation(s)
- Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Gabriele Scarica
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian, 21, 20133 Milano, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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5
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Dembech E, Malatesta M, De Rito C, Mori G, Cavazzini D, Secchi A, Morandin F, Percudani R. Identification of hidden associations among eukaryotic genes through statistical analysis of coevolutionary transitions. Proc Natl Acad Sci U S A 2023; 120:e2218329120. [PMID: 37043529 PMCID: PMC10120013 DOI: 10.1073/pnas.2218329120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 03/10/2023] [Indexed: 04/13/2023] Open
Abstract
Coevolution at the gene level, as reflected by correlated events of gene loss or gain, can be revealed by phylogenetic profile analysis. The optimal method and metric for comparing phylogenetic profiles, especially in eukaryotic genomes, are not yet established. Here, we describe a procedure suitable for large-scale analysis, which can reveal coevolution based on the assessment of the statistical significance of correlated presence/absence transitions between gene pairs. This metric can identify coevolution in profiles with low overall similarities and is not affected by similarities lacking coevolutionary information. We applied the procedure to a large collection of 60,912 orthologous gene groups (orthogroups) in 1,264 eukaryotic genomes extracted from OrthoDB. We found significant cotransition scores for 7,825 orthogroups associated in 2,401 coevolving modules linking known and unknown genes in protein complexes and biological pathways. To demonstrate the ability of the method to predict hidden gene associations, we validated through experiments the involvement of vertebrate malate synthase-like genes in the conversion of (S)-ureidoglycolate into glyoxylate and urea, the last step of purine catabolism. This identification explains the presence of glyoxylate cycle genes in metazoa and suggests an anaplerotic role of purine degradation in early eukaryotes.
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Affiliation(s)
- Elena Dembech
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Marco Malatesta
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Carlo De Rito
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Giulia Mori
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Davide Cavazzini
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Andrea Secchi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
| | - Francesco Morandin
- Department of Mathematical, Physical and Computer Sciences, University of Parma, Parma43124, Italy
| | - Riccardo Percudani
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma43124, Italy
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6
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Andreoni L, Cester Bonati F, Groppi J, Balestri D, Cera G, Credi A, Secchi A, Silvi S. Selective enhancement of organic dye properties through encapsulation in rotaxane orientational isomers. Chem Commun (Camb) 2023; 59:4970-4973. [PMID: 37016922 DOI: 10.1039/d3cc01135f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
We report the synthesis and characterisation of [2]rotaxanes based on a stilbazolium dye and a calix[6]arene macrocycle. Since both components are non-symmetric, two orientational isomers are obtained. The two isomers display distinct photophysical and photochemical properties in solution and solid state, superior to the unencapsulated dye.
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Affiliation(s)
- Leonardo Andreoni
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, viale del Risorgimento 4, 40136 Bologna, Italy
- Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Federica Cester Bonati
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Jessica Groppi
- Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Davide Balestri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Alberto Credi
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, viale del Risorgimento 4, 40136 Bologna, Italy
- Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Serena Silvi
- Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, 40126 Bologna, Italy
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7
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Andreoni L, Beneventi GM, Giovanardi G, Cera G, Credi A, Arduini A, Secchi A, Silvi S. A Multiresponsive Calix[6]arene Pseudorotaxane Empowered by Fluorophoric Dansyl Groups. Chemistry 2023; 29:e202203472. [PMID: 36929373 DOI: 10.1002/chem.202203472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Indexed: 03/18/2023]
Abstract
We report the synthesis and characterization, by means of NMR and UV-visible spectroscopy and electrochemical techniques, of a dansyl calix[6]arene derivative and of its pseudorotaxane complex with a bipyridinium-based axle. This novel macrocycle shows remarkable complexation ability, in analogy with parent compounds, while the dansyl moieties impart valuable features to the system. Indeed, these units: i) signal the state of the system by fluorescence; ii) can be reversibly protonated, enabling the modulation of the complexation abilities of the macrocycle; iii) participate in photoinduced electron transfer processes, which may be exploited to tune the stability of the supramolecular complex. Therefore, in this multiresponsive pseudorotaxane, the threading and de-threading motions of the molecular components can be modulated either by protonation of the calixarene host or by reduction of the bipyridinium guest, which can be accomplished both by electrochemical reduction and via photoinduced electron transfer. Overall, three orthogonal and reversible stimuli can be used to induce molecular movements of the pseudorotaxane components.
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Affiliation(s)
- Leonardo Andreoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy
| | | | - Gabriele Giovanardi
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale del Risorgimento 4, 40136, Bologna, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129, Bologna, Italy
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8
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Cattani S, Secchi A, Ackermann L, Cera G. Triazole-enabled, iron-catalysed linear/branched selective C-H alkylations with alkenes. Org Biomol Chem 2023; 21:1264-1269. [PMID: 36636890 DOI: 10.1039/d2ob02206k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Iron-catalysed C-H alkylations with alkenes were achieved on benzamides by N-triazole assistance. A notable switch of the regioselectivity from linear to branched was observed depending on the nature of the olefin employed. The approach allowed for the synthesis of a family of decorated benzamides with ample scope and high levels of chemo-, regio- and site-selectivity.
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Affiliation(s)
- Silvia Cattani
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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9
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Ragazzon G, Malferrari M, Arduini A, Secchi A, Rapino S, Silvi S, Credi A. Autonomous Non-Equilibrium Self-Assembly and Molecular Movements Powered by Electrical Energy. Angew Chem Int Ed Engl 2023; 62:e202214265. [PMID: 36422473 PMCID: PMC10107654 DOI: 10.1002/anie.202214265] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/07/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022]
Abstract
The ability to exploit energy autonomously is one of the hallmarks of life. Mastering such processes in artificial nanosystems can open technological opportunities. In the last decades, light- and chemically driven autonomous systems have been developed in relation to conformational motion and self-assembly, mostly in relation to molecular motors. In contrast, despite electrical energy being an attractive energy source to power nanosystems, its autonomous harnessing has received little attention. Herein we consider an operation mode that allows the autonomous exploitation of electrical energy by a self-assembling system. Threading and dethreading motions of a pseudorotaxane take place autonomously in solution, powered by the current flowing between the electrodes of a scanning electrochemical microscope. The underlying autonomous energy ratchet mechanism drives the self-assembly steps away from equilibrium with a higher energy efficiency compared to other autonomous systems. The strategy is general and might be extended to other redox-driven systems.
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Affiliation(s)
- Giulio Ragazzon
- Institut de Science et d'Ingégnierie Supramoléculaires (ISIS) UMR 7006, University of Strasbourg, CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Marco Malferrari
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Stefania Rapino
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Serena Silvi
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, via Selmi 2, 40126, Bologna, Italy.,CLAN-Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129, Bologna, Italy
| | - Alberto Credi
- CLAN-Center for Light-Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, viale del Risorgimento 4, 40136, Bologna, Italy
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10
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Cester Bonati F, Bazzoni M, Baccini C, Zanichelli V, Orlandini G, Arduini A, Cera G, Secchi A. Calix[6]arene-Based [3]Rotaxanes as Prototypes for the Template Synthesis of Molecular Capsules. Molecules 2023; 28:molecules28020595. [PMID: 36677647 PMCID: PMC9864859 DOI: 10.3390/molecules28020595] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/18/2022] [Revised: 12/24/2022] [Accepted: 01/01/2023] [Indexed: 01/11/2023]
Abstract
In this work, the ability of several bis-viologen axles to thread a series of heteroditopic tris(N-phenylureido)calix[6]arene wheels to give interwoven supramolecular complexes to the [3]pseudorotaxane type was studied. The unidirectionality of the threading process inside these nonsymmetric wheels allows the formation of highly preorganised [3]pseudorotaxane and [3]rotaxane species in which the macrocycles phenylureido moieties, functionalised with either ester, carboxylic, or hydroxymethyl groups, are facing each other. As verified by NMR and semiempirical computational studies, these latter compounds possess the correct spatial arrangement of their subcomponents, which could lead, in principle, upon proper bridging reaction, to the realisation of upper-to-upper molecular capsules that are based on calix[6]arene derivatives.
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11
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Secchi A, Troiani F. Multi-Dimensional Quantum Capacitance of the Two-Site Hubbard Model: The Role of Tunable Interdot Tunneling. Entropy (Basel) 2022; 25:82. [PMID: 36673222 PMCID: PMC9857432 DOI: 10.3390/e25010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/29/2022] [Revised: 12/19/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Few-electron states confined in quantum-dot arrays are key objects in quantum computing. The discrimination between these states is essential for the readout of a (multi-)qubit state, and can be achieved through a measurement of the quantum capacitance within the gate-reflectometry approach. For a system controlled by several gates, the dependence of the measured capacitance on the direction of the oscillations in the voltage space is captured by the quantum capacitance matrix. Herein, we apply this tool to study a double quantum dot coupled to three gates, which enable the tuning of both the bias and the tunneling between the two dots. Analytical solutions for the two-electron case are derived within a Hubbard model, showing the overall dependence of the quantum capacitance matrix on the applied gate voltages. In particular, we investigate the role of the tunneling gate and reveal the possibility of exploiting interdot coherences in addition to charge displacements between the dots. Our results can be directly applied to double-dot experimental setups, and pave the way for further applications to larger arrays of quantum dots.
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12
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Bonati FC, Secchi A, Cera G. Recent advances with calix[6]- and calix[8]arene organometallic catalysts. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Giovanardi G, Balestri D, Secchi A, Cera G. Diametric calix[6]arene gold(I) catalysts for intramolecular cyclopropanations of 1,6-dienynes. Org Biomol Chem 2022; 20:6464-6472. [PMID: 35894952 DOI: 10.1039/d2ob01074g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report a solid-state structural investigation of diametric calix[6]arene-based phosphine gold(I) cavitands which are characterised by two specific, different 1,2,3-alternate conformations in solution and in the solid state. The effect of the specific orientation of phosphines, with respect to macrocycles, was studied in intramolecular cyclopropanation of 1,6-dienynes. The general applicability of these catalysts was disclosed, delivering a family of polycycles with high yields and functional group tolerance.
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Affiliation(s)
- Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Davide Balestri
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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14
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Giovanardi G, Secchi A, Arduini A, Cera G. Diametric calix[6]arene-based phosphine gold(I) cavitands. Beilstein J Org Chem 2022; 18:190-196. [PMID: 35233258 PMCID: PMC8848346 DOI: 10.3762/bjoc.18.21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/02/2022] [Indexed: 12/18/2022] Open
Abstract
We report the synthesis and characterization, in low polarity solvents, of a novel class of diametric phosphine gold(I) cavitands characterized by a 1,2,3-alternate geometry. Preliminary catalytic studies were performed on a model cycloisomerization of 1,6-enynes as a function of the relative orientation of the bonded gold(I) nuclei with respect to the macrocyclic cavity.
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Affiliation(s)
- Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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15
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Cera G, Bazzoni M, Andreoni L, Cester Bonati F, Massera C, Silvi S, Credi A, Secchi A, Arduini A. Thioureidocalix[6]arenes Pseudorotaxanes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gianpiero Cera
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Margherita Bazzoni
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Leonardo Andreoni
- Dipartimento di Chimica “G. Ciamician” Università di Bologna Via Selmi 2 40126 Bologna Italy
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività Consiglio Nazionale delle Ricerche Via Gobetti 101 40129 Bologna Italy
| | - Federica Cester Bonati
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Chiara Massera
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician” Università di Bologna Via Selmi 2 40126 Bologna Italy
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività Consiglio Nazionale delle Ricerche Via Gobetti 101 40129 Bologna Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività Consiglio Nazionale delle Ricerche Via Gobetti 101 40129 Bologna Italy
- Dipartimento di Chimica Industriale “Toso Montanari” Università di Bologna Viale del Risorgimento 4 40136 Bologna Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
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16
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Marra G, Soria F, Oderda M, Peretti F, Giorgio C, Lamanna G, Todeschini P, Secchi A, Dariane C, Timsit O, Brancherau J, Hedli O, Mesnard B, Tilki D, Olsburgh J, Kulkarni M, Kasivisvanathan V, Lebacle C, Irani J, Breda A, Rodriguez-Faba O, Gaya J, Biancone L, Gontero P. Prostate cancer in kidney transplant recipients: large contemporary multicenter cohort study. EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)00833-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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17
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Cera G, Giovanardi G, Secchi A, Arduini A. Merging Molecular Recognition and Gold(I) Catalysis with Triphoscalix[6]arene Ligands. Chemistry 2021; 27:10261-10266. [PMID: 34002908 DOI: 10.1002/chem.202101323] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 12/17/2022]
Abstract
We report the synthesis and characterization of novel triphosphine calix[6]arene ligands. These supramolecular wheels, with recognition features governed by the hydrogen-bonding domain, were employed to synthesize multitasking trinuclear gold(I) complexes as a new platform for the synthesis of interwoven (pseudo)rotaxane species. In parallel, the multivalent, metal-bonded upper rim displayed catalytic features promoting highly selective gold-catalyzed cycloisomerization reactions of 1,6-enynes.
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Affiliation(s)
- Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Gabriele Giovanardi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
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18
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Marra G, Peretti F, Calleris G, Oderda M, Biancone L, Lamanna G, Todeschini P, Secchi A, Dariane C, Timsit O, Brancherau J, Hedli O, Mesnard B, Tilki D, Olsburgh J, Kulkarni M, Kasivisvanathan V, Lebacle C, Irani J, Breda A, Rodriguez-Faba O, Gaya J, Gandaglia G, Gontero P. Prostate cancer in renal transplant recipients: Results from a large multicentre contemporary cohort. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00730-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Bazzoni M, Andreoni L, Silvi S, Credi A, Cera G, Secchi A, Arduini A. Selective access to constitutionally identical, orientationally isomeric calix[6]arene-based [3]rotaxanes by an active template approach. Chem Sci 2021; 12:6419-6428. [PMID: 34084442 PMCID: PMC8115267 DOI: 10.1039/d1sc00279a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Tris(phenylureido)calix[6]arene is endowed with unique properties that make it a valuable macrocyclic component for the synthesis of mechanically interlocked molecules. Its three-dimensional and intrinsically nonsymmetric structure is kinetically selective toward two processes: (i) in apolar media, the threading of bipyridinium based axle-like components takes place exclusively from the upper rim; (ii) SN2 alkylation reactions of a pyridylpyridinium precursor engulfed in the cavity occur selectively at pyridylpyridinium nitrogen atom located at the macrocycle upper rim (active template synthesis). Here we exploit such properties to prepare two series of [3]rotaxanes, each consisting of three sequence isomers that arise from the threading of two identical but nonsymmetric wheels on a symmetric thread differing only for the reciprocal orientation of the macrocycles. The features of the calix[6]arene and the active template synthetic approach, together with a careful selection of the precursors, enabled us to selectively synthesise the [3]rotaxane sequence isomers of each series with fast kinetics and high yields. Expedient access to a series of spatially controlled oriented [3]rotaxane isomers via a metal-free active template approach.![]()
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Affiliation(s)
- Margherita Bazzoni
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma Parco Area delle Scienze 17/A I-43124 Parma Italy
| | - Leonardo Andreoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna Via Selmi 2 I-40126 Bologna Italy
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna Via Selmi 2 I-40126 Bologna Italy
| | - Alberto Credi
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche Via Gobetti 101 I-40129 Bologna Italy.,Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna Viale del Risorgimento 4 I-40136 Bologna Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma Parco Area delle Scienze 17/A I-43124 Parma Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma Parco Area delle Scienze 17/A I-43124 Parma Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma Parco Area delle Scienze 17/A I-43124 Parma Italy
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20
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Cera G, Arduini A, Secchi A, Credi A, Silvi S. Heteroditopic Calix[6]arene Based Intervowen and Interlocked Molecular Devices. CHEM REC 2021; 21:1161-1181. [PMID: 33656250 DOI: 10.1002/tcr.202100012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/17/2021] [Indexed: 01/13/2023]
Abstract
Since the dawn of supramolecular chemistry, calixarenes have been employed as platforms onto which functional groups and binding sites can be loaded in a regio- and stereocontrolled manner for the recognition of charged and neutral species. Despite their wider annulus, potentially suitable to bind larger guests, the larger members of the calixarene series have been relatively less employed, mainly because of the synthetic difficulties to control their conformational flexibility and their regioselective functionalization. In this account, we will present the achievements gained during the last two decades on the use of the calix[6]arene as a platform to build-up structures in which the macrocycle acts as a wheel for the synthesis of oriented (pseudo)rotaxanes. We also account on how these calix[6]arene hosts affect the reactivity or spectroscopic properties of their bound guests.
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Affiliation(s)
- Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124, Parma, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124, Parma, Italy
| | - Alberto Credi
- Dipartimento di Chimica Industriale "Toso Montanari", Viale del Risorgimento 4, I-40136, Bologna, Italy.,Istituto per la Sintesi Organica e la Foto reattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129, Bologna, Italy
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, I-40126, Bologna, Italy
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21
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Cera G, Cester Bonati F, Bazzoni M, Secchi A, Arduini A. Calix[6]arene-based Brønsted acids for molecular recognition and catalysis. Org Biomol Chem 2021; 19:1546-1554. [PMID: 33503105 DOI: 10.1039/d0ob02393k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis of a versatile trifluoromethylsulfonamide calix[6]arene derivative with Brønsted acid features which can influence both molecular recognition and catalytic application. Indeed, in low polarity media, the trifluoromethyl-containing supramolecular wheel is able to respond to the complexation with charged species as a function of its selective ion-pair recognition. In parallel, the enhanced acidity is the key to promote Michael additions of indoles to nitroalkenes under pseudo-physiological reaction conditions (H2O, 37 °C).
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Affiliation(s)
- Gianpiero Cera
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Federica Cester Bonati
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Margherita Bazzoni
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Arturo Arduini
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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22
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Cera G, Balestri D, Bazzoni M, Marchiò L, Secchi A, Arduini A. Trisulfonamide calix[6]arene-catalysed Michael addition to nitroalkenes. Org Biomol Chem 2020; 18:6241-6246. [PMID: 32735000 DOI: 10.1039/d0ob01319f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We describe the application of a novel family of trisulfonamide (TSA) calix[6]arenes in general acid catalysis. Hydrogen-bonding interactions between acidic TSA and methanol boosted the reactivity of the Michael addition of indoles to nitroalkene derivatives. The transformation occurs at a low catalyst loading of 5 mol%, allowing for the synthesis of nitroalkanes with good yields and functional group tolerance.
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Affiliation(s)
- Gianpiero Cera
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Davide Balestri
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Margherita Bazzoni
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Luciano Marchiò
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Arturo Arduini
- Università di Parma, Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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23
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Abstract
![]()
We describe the synthesis
of a new class of trisulfonamide calix[6]arene-based
wheels that can bind dialkylviologen salts, in apolar media. The threading
process occurs through a selective ion-pair recognition, established
by the sulfonamide groups with the counterions of the bipyridinium
salts, that dictates a conformational rearrangement of the corresponding
pseudorotaxanes.
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Affiliation(s)
- Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy
| | - Margherita Bazzoni
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy
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24
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Bazzoni M, Terenziani F, Secchi A, Cera G, Jabin I, De Leener G, Luhmer M, Arduini A. Tuning the Fluorescence Through Reorientation of the Axle in Calix[6]arene-Based Pseudorotaxanes. Chemistry 2020; 26:3022-3025. [PMID: 31944456 DOI: 10.1002/chem.201905500] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Indexed: 12/31/2022]
Abstract
This work describes a calix[6]arene-based wheel that binds, in non-polar media, a stilbazolium salt to yield a mixture of pseudorotaxane orientational isomers. The isomer's abundance ratio evolves with time and can be reversibly tuned by adjusting the temperature. The spectroscopic properties, and notably the emission spectrum, of the bound guest depend on its orientation inside the non-palindromic wheel, suggesting such a system as a switch with spectroscopic readout.
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Affiliation(s)
- Margherita Bazzoni
- Dipartimento di Scienze Chimiche, della Vita e, della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Francesca Terenziani
- Dipartimento di Scienze Chimiche, della Vita e, della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e, della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Gianpiero Cera
- Dipartimento di Scienze Chimiche, della Vita e, della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
| | - Ivan Jabin
- Laboratoire de Chimie Organique, Université libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
| | - Gaël De Leener
- Centre d'Instrumentation en REsonance Magnétique (CIREM), Laboratoire de Résonance Magnétique Nucléaire Haute Résolution, Université libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CP160/08, 1050, Brussels, Belgium
| | - Michel Luhmer
- Centre d'Instrumentation en REsonance Magnétique (CIREM), Laboratoire de Résonance Magnétique Nucléaire Haute Résolution, Université libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CP160/08, 1050, Brussels, Belgium
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e, della Sostenibilità Ambientale, Università degli Studi di Parma, Parco Area delle Scienze 17/A, 43124, Parma, Italy
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25
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Orlandini G, Casimiro L, Bazzoni M, Cogliati B, Credi A, Lucarini M, Silvi S, Arduini A, Secchi A. Synthesis and properties of a redox-switchable calix[6]arene-based molecular lasso. Org Chem Front 2020. [DOI: 10.1039/c9qo01379b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A self-complexing lasso-like molecule has been synthesised as the first example of a calix[6]arene-based [1]pseudorotaxane. This artificial molecular lasso can be switched between self-threaded and dethreaded structures by redox stimulation.
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Affiliation(s)
- Guido Orlandini
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Lorenzo Casimiro
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Italy
| | - Margherita Bazzoni
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Beatrice Cogliati
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Alberto Credi
- Istituto per la Sintesi Organica e la Fotoreattività
- Consiglio Nazionale delle Ricerche
- I-40129 Bologna
- Italy
- Dipartimento di Chimica Industriale “Toso Montanari”
| | - Marco Lucarini
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
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Paiva F, Boromand A, Maia J, Secchi A, Calado V, Khani S. Interfacial aggregation of Janus rods in binary polymer blends and their effect on phase separation. J Chem Phys 2019; 151:114907. [PMID: 31542012 DOI: 10.1063/1.5100134] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Janus particles interfacially self-assemble into different structures when incorporated into multiphase systems. Dissipative particle dynamics simulations are employed herein to investigate the interplay between aggregation mechanisms and phase separation in polymer blends. Shorter rods with a standing configuration become increasingly "caged" or trapped in larger aggregates as weight fraction increases, which is reflected in the way that their diffusion is coupled to their aggregation rates. Janus rods of higher aspect ratios that are tilted at the interface aggregate side-by-side and are able to hinder phase separation kinetics. This is due to a combination of individual Janus rod conformations at the interface, their intrinsic aggregation mechanisms, aggregate fractal dimension, and aggregation rates, and can also be traced back to the scaling of the diffusion coefficient of aggregates with their size. Findings presented provide insight into the mechanisms governing two dimensionally growing colloidal aggregates at fluid interfaces, more specifically, those associated with Janus particles, and shed light on the potential of these systems in paving the way for designing new functional materials.
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Affiliation(s)
- F Paiva
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, USA
| | - A Boromand
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, USA
| | - J Maia
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, USA
| | - A Secchi
- Chemical Engineering Graduate Program (COPPE), Universidade Federal do Rio de Janeiro, Rua Horácio Macedo 2030, Cidade Universitária, Rio de Janeiro, RJ 21941-909, Brazil
| | - V Calado
- School of Chemistry, Universidade Federal do Rio de Janeiro, Rua Horácio Macedo 2030, Cidade Universitária, Rio de Janeiro, RJ 21941-909, Brazil
| | - S Khani
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, USA
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27
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Bazzoni M, Zanichelli V, Casimiro L, Massera C, Credi A, Secchi A, Silvi S, Arduini A. New Geometries for Calix[6]arene-Based Rotaxanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Margherita Bazzoni
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Valeria Zanichelli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Lorenzo Casimiro
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Italy
| | - Chiara Massera
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Alberto Credi
- Center for Light Activated Nanostructures (CLAN) and Dipartimento di Scienze e Tecnologie Agro-alimentari; Università di Bologna; 40127 Bologna Italy
- Istituto per la Sintesi Organica e la Fotoreattività (ISOF) - CNR Area della Ricerca di Bologna; Via P. Gobetti 101 40129 Bologna Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
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28
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Zanichelli V, Bazzoni M, Arduini A, Franchi P, Lucarini M, Ragazzon G, Secchi A, Silvi S. Redox-Switchable Calix[6]arene-Based Isomeric Rotaxanes. Chemistry 2018; 24:12370-12382. [DOI: 10.1002/chem.201800496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Valeria Zanichelli
- Dipartimento di Scienze Chimiche, della Vita e della; Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Margherita Bazzoni
- Dipartimento di Scienze Chimiche, della Vita e della; Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della; Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Paola Franchi
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lucarini
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Giulio Ragazzon
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Bologna Italy
- Dipartimento di Scienze Chimiche; Università di Padova; via Marzolo 1 35131 Padova Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della; Sostenibilità Ambientale; Università di Parma; Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”; Università di Bologna; Via Selmi 2 40126 Bologna Italy
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29
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Zanichelli V, Dallacasagrande L, Arduini A, Secchi A, Ragazzon G, Silvi S, Credi A. Electrochemically Triggered Co-Conformational Switching in a [2]catenane Comprising a Non-Symmetric Calix[6]arene Wheel and a Two-Station Oriented Macrocycle. Molecules 2018; 23:E1156. [PMID: 29751658 PMCID: PMC6100520 DOI: 10.3390/molecules23051156] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 11/17/2022] Open
Abstract
Catenanes with desymmetrized ring components can undergo co-conformational rearrangements upon external stimulation and can form the basis for the development of molecular rotary motors. We describe the design, synthesis and properties of a [2]catenane consisting of a macrocycle-the 'track' ring-endowed with two distinct recognition sites (a bipyridinium and an ammonium) for a calix[6]arene-the 'shuttle' ring. By exploiting the ability of the calixarene to thread appropriate non-symmetric axles with directional selectivity, we assembled an oriented pseudorotaxane and converted it into the corresponding oriented catenane by intramolecular ring closing metathesis. Cyclic voltammetric experiments indicate that the calixarene wheel initially surrounds the bipyridinium site, moves away from it when it is reduced, and returns in the original position upon reoxidation. A comparison with appropriate model compounds shows that the presence of the ammonium station is necessary for the calixarene to leave the reduced bipyridinium site.
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Affiliation(s)
- Valeria Zanichelli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Luca Dallacasagrande
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Giulio Ragazzon
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, 40126 Bologna, Italy.
- Dipartimento di Scienze Chimiche, Università di Padova, 35131 Padova, Italy.
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, 40126 Bologna, Italy.
- Center for Light Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy.
| | - Alberto Credi
- Center for Light Activated Nanostructures (CLAN), Università di Bologna and Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy.
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, 40127 Bologna, Italy.
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy.
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Zanichelli V, Ragazzon G, Orlandini G, Venturi M, Credi A, Silvi S, Arduini A, Secchi A. Efficient active-template synthesis of calix[6]arene-based oriented pseudorotaxanes and rotaxanes. Org Biomol Chem 2017; 15:6753-6763. [PMID: 28766652 DOI: 10.1039/c7ob01642e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A substrate can modify its chemical features, including a change of its reactivity, as a consequence of non-covalent interactions upon inclusion within a molecular host. Since the rise of supramolecular chemistry, this phenomenon has stimulated the ingenuity of scientists to emulate the function of enzymes by designing supramolecular systems in which the energetics and selectivity of reactions can be manipulated through programmed host-guest interactions and/or steric confinement. In this paper we investigate how the engulfment of a positively charged pyridinium-based guest inside the π-rich cavity of a tris-(N-phenylureido)calix[6]arene host affects its reactivity towards a SN2 reaction. We found that the alkylation of complexed substrates leads to the formation of pseudorotaxanes and rotaxanes with faster kinetics and higher yields with respect to the standard procedures exploited so far. More importantly, the strategy described here expands the range of efficient synthetic routes for the formation of mechanically interlocked species with a strict control of the mutual orientation of their non-symmetric molecular components.
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Affiliation(s)
- Valeria Zanichelli
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università di Parma, Parco Area delle Scienze 17/A, I-43124 Parma, Italy.
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31
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Gazzetta P, Bissolati M, Saibene A, Ghidini C, Guarneri G, Giannone F, Adamenko O, Secchi A, Rosati R, Socci C. Bariatric Surgery to Target Obesity in the Renal Transplant Population: Preliminary Experience in a Single Center. Transplant Proc 2017; 49:646-649. [DOI: 10.1016/j.transproceed.2017.02.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Orlandini G, Ragazzon G, Zanichelli V, Degli Esposti L, Baroncini M, Silvi S, Venturi M, Credi A, Secchi A, Arduini A. Plugging a Bipyridinium Axle into Multichromophoric Calix[6]arene Wheels Bearing Naphthyl Units at Different Rims. ChemistryOpen 2017; 6:64-72. [PMID: 28168152 PMCID: PMC5288757 DOI: 10.1002/open.201600128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 10/17/2016] [Indexed: 11/21/2022] Open
Abstract
Tris‐(N‐phenylureido)‐calix[6]arene derivatives are heteroditopic non‐symmetric molecular hosts that can form pseudorotaxane complexes with 4,4′‐bipyridinium‐type guests. Owing to the unique structural features and recognition properties of the calix[6]arene wheel, these systems are of interest for the design and synthesis of novel molecular devices and machines. We envisaged that the incorporation of photoactive units in the calixarene skeleton could lead to the development of systems the working modes of which can be governed and monitored by means of light‐activated processes. Here, we report on the synthesis, structural characterization, and spectroscopic, photophysical, and electrochemical investigation of two calix[6]arene wheels decorated with three naphthyl groups anchored to either the upper or lower rim of the phenylureido calixarene platform. We found that the naphthyl units interact mutually and with the calixarene skeleton in a different fashion in the two compounds, which thus exhibit a markedly distinct photophysical behavior. For both hosts, the inclusion of a 4,4′‐bipyridinium guest activates energy‐ and/or electron‐transfer processes that lead to non‐trivial luminescence changes.
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Affiliation(s)
- Guido Orlandini
- Dipartimento di ChimicaUniversità degli Studi di ParmaParco Area delle Scienze 17A43124ParmaItaly
| | - Giulio Ragazzon
- Dipartimento di Chimica “G. Ciamician”and Interuniversity Center for the Chemical Conversion of Solar EnergyBologna UnitUniversità di BolognaVia Selmi 240126BolognaItaly
| | - Valeria Zanichelli
- Dipartimento di ChimicaUniversità degli Studi di ParmaParco Area delle Scienze 17A43124ParmaItaly
| | - Lorenzo Degli Esposti
- Dipartimento di Chimica “G. Ciamician”and Interuniversity Center for the Chemical Conversion of Solar EnergyBologna UnitUniversità di BolognaVia Selmi 240126BolognaItaly
| | - Massimo Baroncini
- Dipartimento di Chimica “G. Ciamician”and Interuniversity Center for the Chemical Conversion of Solar EnergyBologna UnitUniversità di BolognaVia Selmi 240126BolognaItaly
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”and Interuniversity Center for the Chemical Conversion of Solar EnergyBologna UnitUniversità di BolognaVia Selmi 240126BolognaItaly
| | - Margherita Venturi
- Dipartimento di Chimica “G. Ciamician”and Interuniversity Center for the Chemical Conversion of Solar EnergyBologna UnitUniversità di BolognaVia Selmi 240126BolognaItaly
| | - Alberto Credi
- Dipartimento di Scienze e Tecnologie Agro-alimentariUniversità di Bolognaviale Fanin 5040127BolognaItaly
| | - Andrea Secchi
- Dipartimento di ChimicaUniversità degli Studi di ParmaParco Area delle Scienze 17A43124ParmaItaly
| | - Arturo Arduini
- Dipartimento di ChimicaUniversità degli Studi di ParmaParco Area delle Scienze 17A43124ParmaItaly
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33
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Orlandini G, Groppi J, Secchi A, Arduini A, Kilburn JD. Electrochemical Response of the Threading/de-threading Process of Calix[6]arene-based Pseudorotaxanes Anchored on Glassy Carbon Electrodes. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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34
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Orlandini G, Ragazzon G, Zanichelli V, Secchi A, Silvi S, Venturi M, Arduini A, Credi A. Covalent capture of oriented calix[6]arene rotaxanes by a metal-free active template approach. Chem Commun (Camb) 2017; 53:6172-6174. [DOI: 10.1039/c7cc02859h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rotaxane with predetermined orientation of its nonsymmetric components is obtained by a rim-selective active template effect exerted by a calix[6]arene.
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Affiliation(s)
- Guido Orlandini
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Giulio Ragazzon
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Valeria Zanichelli
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Andrea Secchi
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
| | - Margherita Venturi
- Dipartimento di Chimica “G. Ciamician”
- Università di Bologna
- 40126 Bologna
- Italy
- Istituto per la Sintesi Organica e la Fotoreattività
| | - Arturo Arduini
- Dipartimento di Scienze Chimiche
- della Vita e della Sostenibilità Ambientale
- Università di Parma
- I-43124 Parma
- Italy
| | - Alberto Credi
- Istituto per la Sintesi Organica e la Fotoreattività
- Consiglio Nazionale delle Ricerche
- 40129 Bologna
- Italy
- Dipartimento di Scienze e Tecnologie Agro-alimentari
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35
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Cendron L, Ramazzina I, Puggioni V, Maccacaro E, Liuzzi A, Secchi A, Zanotti G, Percudani R. The Structure and Function of a Microbial Allantoin Racemase Reveal the Origin and Conservation of a Catalytic Mechanism. Biochemistry 2016; 55:6421-6432. [DOI: 10.1021/acs.biochem.6b00881] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Laura Cendron
- Department
of Biomedical Sciences, University of Padova, Padova, Italy
| | | | | | | | | | - Andrea Secchi
- Department
of Chemistry, University of Parma, Parma, Italy
| | - Giuseppe Zanotti
- Department
of Biomedical Sciences, University of Padova, Padova, Italy
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36
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Balzano G, Maffi P, Nano R, Mercalli A, Melzi R, Aleotti F, Zerbi A, De Cobelli F, Gavazzi F, Magistretti P, Scavini M, Peccatori J, Secchi A, Ciceri F, Del Maschio A, Falconi M, Piemonti L. Autologous Islet Transplantation in Patients Requiring Pancreatectomy: A Broader Spectrum of Indications Beyond Chronic Pancreatitis. Am J Transplant 2016; 16:1812-26. [PMID: 26695701 DOI: 10.1111/ajt.13656] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 01/25/2023]
Abstract
Islet autotransplantation (IAT) is usually performed in patients undergoing pancreatic surgery for chronic pancreatitis. In the present series, IAT was offered also to patients undergoing pancreatic surgery for both nonmalignant and malignant diseases, having either completion pancreatectomy as treatment for severe pancreatic fistulas (n = 21) or extensive distal pancreatectomy for neoplasms of the pancreatic neck (n = 19) or pancreatoduodenectomy because of the high risk of pancreatic fistula (n = 32). Fifty-eight of 72 patients who were eligible to this broader spectrum of indication actually received IAT. There was no evidence of a higher-than-expected rate of major complications for pancreatectomy. Forty-five patients receiving IAT were still alive at the time of the last scheduled follow-up (1375 ± 365 days). Eighteen (95%) of 19 and 11 (28%) of 39 patients reached insulin independence after partial or total pancreatectomy, respectively. The metabolic results were dependent on the transplanted islet mass. Thirty-one of 58 patients had malignant diseases of the pancreas or periampullary region, and only three patients developed ex novo liver metastases after IAT (median follow-up 914 ± 382 days). Our data demonstrate the feasibility, efficacy, and safety of IAT for a broader spectrum of clinical indications beyond chronic pancreatitis.
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Affiliation(s)
- G Balzano
- Pancreatic Surgery Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - P Maffi
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - R Nano
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Mercalli
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - R Melzi
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - F Aleotti
- Pancreatic Surgery Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Zerbi
- Pancreatic Surgery Section, Department of General Surgery, IRCCS Istituto Clinico Humanitas, Milano, Italy
| | - F De Cobelli
- Department of Radiology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - F Gavazzi
- Pancreatic Surgery Section, Department of General Surgery, IRCCS Istituto Clinico Humanitas, Milano, Italy
| | - P Magistretti
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - M Scavini
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - J Peccatori
- Units of Haematology and Bone Marrow Transplantation, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Secchi
- Clinical Transplant Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - F Ciceri
- Units of Haematology and Bone Marrow Transplantation, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - A Del Maschio
- Department of Radiology, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - M Falconi
- Pancreatic Surgery Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - L Piemonti
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
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37
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Chiari D, Bissolati M, Gazzetta P, Guarneri G, Tomanin D, Maffi P, Secchi A, Rosati R, Socci C. Pancreas Transplantation From Very Small Pediatric Donor Using the “Cephalic Placement” Technique: A Case Report. Transplant Proc 2016; 48:435-7. [DOI: 10.1016/j.transproceed.2016.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/03/2016] [Accepted: 01/12/2016] [Indexed: 01/04/2023]
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Zanichelli V, Ragazzon G, Arduini A, Credi A, Franchi P, Orlandini G, Venturi M, Lucarini M, Secchi A, Silvi S. Synthesis and Characterization of Constitutionally Isomeric Oriented Calix[6]arene-Based Rotaxanes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501522] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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39
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Vita F, Vorti M, Orlandini G, Zanichelli V, Massera C, Ugozzoli F, Arduini A, Secchi A. Synthesis and recognition properties of calix[4]arene semitubes as ditopic hosts for N-alkylpyridinium ion pairs. CrystEngComm 2016. [DOI: 10.1039/c6ce00268d] [Citation(s) in RCA: 5] [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: 11/21/2022]
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40
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Vita F, Gavilán H, Rossi F, de Julián Fernández C, Secchi A, Arduini A, Albertini F, Morales MP. Tuning morphology and magnetism of magnetite nanoparticles by calix[8]arene-induced oriented aggregation. CrystEngComm 2016. [DOI: 10.1039/c6ce01252c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Orlandini G, Zanichelli V, Secchi A, Arduini A, Ragazzon G, Credi A, Venturi M, Silvi S. Synthesis by ring closing metathesis and properties of an electroactive calix[6]arene [2]catenane. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1111374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Guido Orlandini
- Dipartimento di Chimica, Università degli Studi di Parma, Parma, Italy
| | | | - Andrea Secchi
- Dipartimento di Chimica, Università degli Studi di Parma, Parma, Italy
| | - Arturo Arduini
- Dipartimento di Chimica, Università degli Studi di Parma, Parma, Italy
| | - Giulio Ragazzon
- Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Bologna, Italy
| | - Alberto Credi
- Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Bologna, Italy
| | - Margherita Venturi
- Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Bologna, Italy
| | - Serena Silvi
- Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Bologna, Italy
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Vita F, Boccia A, Marrani AG, Zanoni R, Rossi F, Arduini A, Secchi A. Calix[4]arene-Functionalised Silver Nanoparticles as Hosts for Pyridinium-Loaded Gold Nanoparticles as Guests. Chemistry 2015; 21:15428-38. [PMID: 26471448 DOI: 10.1002/chem.201501920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/06/2015] [Indexed: 12/26/2022]
Abstract
A series of lipophilic gold nanoparticles (AuNPs) circa 5 nm in diameter and having a mixed organic layer consisting of 1-dodecanethiol and 1-(11-mercaptoundecyl) pyridinium bromide was synthesised by reacting tetraoctylammonium bromide stabilised AuNPs in toluene with different mixtures of the two thiolate ligands. A bidentate ω-alkylthiolate calix[4]arene derivative was instead used as a functional protecting layer on AgNPs of approximately 3 nm. The functionalised nanoparticles were characterised by transmission electron microscopy (TEM), and by UV/Vis and X-ray photoelectron spectroscopy (XPS). Recognition of the pyridinium moieties loaded on the AuNPs by the calix[4]arene units immobilised on the AgNPs was demonstrated in solution of weakly polar solvents by UV/Vis titrations and DLS measurements. The extent of Au-AgNPs aggregation, shown through the low-energy shift of their surface plasmon bands (SPB), was strongly dependent on the loading of the pyridinium moieties present in the organic layer of the AuNPs. Extensive aggregation between dodecanethiol-capped AuNPs and the Ag calix[4]arene-functionalised NPs was also promoted by the action of a simple N-octyl pyridinium difunctional supramolecular linker. This linker can interdigitate through its long fatty tail in the organic layer of the dodecanethiol-capped AuNPs, and simultaneously interact through its pyridinium moiety with the calix[4]arene units at the surface of the modified AgNPs.
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Affiliation(s)
- Francesco Vita
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17A, 43124 Parma (Italy), Fax: (+39) 0521-905472.,Istituto dei Materiali per l'Elettronica ed il Magnetismo (IMEM-CNR), Parco Area delle Scienze 37A, 43124 Parma (Italy)
| | - Alice Boccia
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, 00185 Roma (Italy)
| | - Andrea G Marrani
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, 00185 Roma (Italy)
| | - Robertino Zanoni
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, 00185 Roma (Italy).
| | - Francesca Rossi
- Istituto dei Materiali per l'Elettronica ed il Magnetismo (IMEM-CNR), Parco Area delle Scienze 37A, 43124 Parma (Italy)
| | - Arturo Arduini
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17A, 43124 Parma (Italy), Fax: (+39) 0521-905472
| | - Andrea Secchi
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17A, 43124 Parma (Italy), Fax: (+39) 0521-905472.
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Colagiorgi A, Turroni F, Mancabelli L, Serafini F, Secchi A, van Sinderen D, Ventura M. Insights into teichoic acid biosynthesis byBifidobacterium bifidumPRL2010. FEMS Microbiol Lett 2015; 362:fnv141. [DOI: 10.1093/femsle/fnv141] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2015] [Indexed: 12/23/2022] Open
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Campanini M, Ciprian R, Bedogni E, Mega A, Chiesi V, Casoli F, de Julián Fernández C, Rotunno E, Rossi F, Secchi A, Bigi F, Salviati G, Magén C, Grillo V, Albertini F. Lorentz microscopy sheds light on the role of dipolar interactions in magnetic hyperthermia. Nanoscale 2015; 7:7717-7725. [PMID: 25835488 DOI: 10.1039/c5nr00273g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Monodispersed Fe3O4 nanoparticles with comparable size distributions have been synthesized by two different synthesis routes, co-precipitation and thermal decomposition. Thanks to the different steric stabilizations, the described samples can be considered as a model system to investigate the effects of magnetic dipolar interactions on the aggregation states of the nanoparticles. Moreover, the presence of magnetic dipolar interactions can strongly affect the nanoparticle efficiency as a hyperthermic mediator. In this paper, we present a novel way to visualize and map the magnetic dipolar interactions in different kinds of nanoparticle aggregates by the use of Lorentz microscopy, an easy and reliable in-line electron holographic technique. By exploiting Lorentz microscopy, which is complementary to the magnetic measurements, it is possible to correlate the interaction degrees of magnetic nanoparticles with their magnetic behaviors. In particular, we demonstrate that Lorentz microscopy is successful in visualizing the magnetic configurations stabilized by dipolar interactions, thus paving the way to the comprehension of the power loss mechanisms for different nanoparticle aggregates.
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Affiliation(s)
- M Campanini
- Istituto Materiali per l'Elettronica ed il Magnetismo IMEM-CNR, Parco Area delle Scienze 37/A, 43124 Parma, Italy.
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Zappacosta R, Fontana A, Credi A, Arduini A, Secchi A. Incorporation of Calix[6]Arene Macrocycles and (Pseudo)Rotaxanes in Bilayer Membranes: Towards Controllable Artificial Liposomal Channels. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201402244] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Balamurugan AN, Naziruddin B, Lockridge A, Tiwari M, Loganathan G, Takita M, Matsumoto S, Papas K, Trieger M, Rainis H, Kin T, Kay TW, Wease S, Messinger S, Ricordi C, Alejandro R, Markmann J, Kerr-Conti J, Rickels MR, Liu C, Zhang X, Witkowski P, Posselt A, Maffi P, Secchi A, Berney T, O’Connell PJ, Hering BJ, Barton FB. Islet product characteristics and factors related to successful human islet transplantation from the Collaborative Islet Transplant Registry (CITR) 1999-2010. Am J Transplant 2014; 14:2595-606. [PMID: 25278159 PMCID: PMC4282081 DOI: 10.1111/ajt.12872] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 05/30/2014] [Accepted: 06/18/2014] [Indexed: 02/05/2023]
Abstract
The Collaborative Islet Transplant Registry (CITR) collects data on clinical islet isolations and transplants. This retrospective report analyzed 1017 islet isolation procedures performed for 537 recipients of allogeneic clinical islet transplantation in 1999-2010. This study describes changes in donor and islet isolation variables by era and factors associated with quantity and quality of final islet products. Donor body weight and BMI increased significantly over the period (p<0.001). Islet yield measures have improved with time including islet equivalent (IEQ)/particle ratio and IEQs infused. The average dose of islets infused significantly increased in the era of 2007-2010 when compared to 1999-2002 (445.4±156.8 vs. 421.3±155.4×0(3) IEQ; p<0.05). Islet purity and total number of β cells significantly improved over the study period (p<0.01 and <0.05, respectively). Otherwise, the quality of clinical islets has remained consistently very high through this period, and differs substantially from nonclinical islets. In multivariate analysis of all recipient, donor and islet factors, and medical management factors, the only islet product characteristic that correlated with clinical outcomes was total IEQs infused. This analysis shows improvements in both quantity and some quality criteria of clinical islets produced over 1999-2010, and these parallel improvements in clinical outcomes over the same period.
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Affiliation(s)
- A N Balamurugan
- Schulze Diabetes Institute, Department of Surgery, University of MinnesotaMinneapolis, MN
- * Corresponding authors: Appakalai N. Balamurugan, and Franca B. Barton,
| | - B Naziruddin
- Baylor Annette C. and Harold C. Simmons Transplant InstituteDallas, TX
| | - A Lockridge
- Schulze Diabetes Institute, Department of Surgery, University of MinnesotaMinneapolis, MN
| | - M Tiwari
- Schulze Diabetes Institute, Department of Surgery, University of MinnesotaMinneapolis, MN
| | - G Loganathan
- Schulze Diabetes Institute, Department of Surgery, University of MinnesotaMinneapolis, MN
| | - M Takita
- Baylor Annette C. and Harold C. Simmons Transplant InstituteDallas, TX
| | - S Matsumoto
- Research and Development Center, Otsuka Pharmaceutical Factory, Inc.Tokushima, Japan
| | - K Papas
- Institute for Cellular Transplantation, University of ArizonaTucson, AZ
| | | | - H Rainis
- The EMMES CorporationRockville, MD
| | - T Kin
- Clinical Islet Laboratory, University of AlbertaEdmonton, AB
| | - T W Kay
- St. Vincent's HospitalMelbourne, Australia
| | - S Wease
- The EMMES CorporationRockville, MD
| | - S Messinger
- Department of Public Health Services, University of MiamiMiami, FL
| | - C Ricordi
- Diabetes Research Institute, University of MiamiMiami, FL
| | - R Alejandro
- Diabetes Research Institute, University of MiamiMiami, FL
| | - J Markmann
- Department of Surgery, Massachusetts General HospitalBoston, MA
| | | | - M R Rickels
- Department of Medicine, University of PennsylvaniaPhiladelphia, PA
| | - C Liu
- Department of Surgery, University of PennsylvaniaPhiladelphia, PA
| | - X Zhang
- Feinberg School of Medicine, Northwestern UniversityChicago, IL
| | - P Witkowski
- Department of Surgery, University of ChicagoChicago, IL
| | - A Posselt
- Department of Surgery, University of California, San FranciscoSan Francisco, CA
| | - P Maffi
- Vita-Salute, San Raffaele UniversityMilan, Italy
| | - A Secchi
- Vita-Salute, San Raffaele UniversityMilan, Italy
| | - T Berney
- Department of Surgery, Geneva University HospitalGeneva, Switzerland
| | - P J O’Connell
- National Pancreas Transplant Unit, University of Sydney at Westmead HospitalSydney, Australia
| | - B J Hering
- Schulze Diabetes Institute, Department of Surgery, University of MinnesotaMinneapolis, MN
| | - F B Barton
- The EMMES CorporationRockville, MD
- * Corresponding authors: Appakalai N. Balamurugan, and Franca B. Barton,
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Semeraro M, Secchi A, Silvi S, Venturi M, Arduini A, Credi A. Photoinduced electron transfer from [Ru(bpy)3]2+ to a calix[6]arene-encapsulated viologen electron acceptor. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.01.017] [Citation(s) in RCA: 6] [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: 10/25/2022]
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Esposito A, Palmisano A, Maffi P, Malosio ML, Nano R, Canu T, De Cobelli F, Piemonti L, Ironi G, Secchi A, Del Maschio A. Liver perfusion changes occurring during pancreatic islet engraftment: a dynamic contrast-enhanced magnetic resonance study. Am J Transplant 2014; 14:202-9. [PMID: 24219129 DOI: 10.1111/ajt.12501] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/26/2013] [Accepted: 09/07/2013] [Indexed: 01/25/2023]
Abstract
The aim of this study was to investigate liver microvascular adaptation following the intraportal infusion of pancreatic islets (pancreatic islet transplantation [islet-tx]) in diabetic patients using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). DCE-MRI was performed before and 7 days after islet-tx in six diabetic patients. Initial area under curve (AUC60) and volume transfer coefficient (Ktrans) were assessed as markers of liver perfusion. Clinical and metabolic monthly follow-up was performed in all patients, considering fasting C-peptide and β-score as main indices of graft function. High variability in the response of liver microvasculature to islet infusion was observed: two patients showed a significant reduction in liver perfusion after transplantation (pt.2: AUC60 = -23.4%, Ktrans = -31.7%; pt.4: AUC60 = -23.7%, Ktrans = -27.9%); three patients did not show any significant variation of liver perfusion and one patient showed a significant increase (pt.3: AUC60 = +31%, Ktrans = +42.8%). Interestingly, a correlation between DCE-MRI parameters and indices of graft function was observed and, in particular, both patients with DCE-MRI evidence of posttransplantation liver perfusion reduction experienced premature graft failure. Our preliminary study demonstrated that DCE-MRI may identify different adaptive responses of liver microvasculature in patients submitted to islet-tx. These different responses could have an impact on islet engraftment, although reported findings need confirmation from larger studies.
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Affiliation(s)
- A Esposito
- Department of Radiology and Experimental Imaging Center, San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
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Arduini A, Bussolati R, Massera C, Pochini A, Rapaccioli F, Secchi A, Ugozzoli F. A thiourea calix[6]arene-based synthon that generates a supramolecular porous crystal structure. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.814777] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Arturo Arduini
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Rocco Bussolati
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Chiara Massera
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Andrea Pochini
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Federica Rapaccioli
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Andrea Secchi
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
| | - Franco Ugozzoli
- Dipartimento di Chimica, Università degli Studi di Parma, Parco Area delle Scienze 17/A, I-43124Parma, Italy
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50
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Arduini A, Bussolati R, Credi A, Secchi A, Silvi S, Semeraro M, Venturi M. Toward Directionally Controlled Molecular Motions and Kinetic Intra- and Intermolecular Self-Sorting: Threading Processes of Nonsymmetric Wheel and Axle Components. J Am Chem Soc 2013; 135:9924-30. [DOI: 10.1021/ja404270c] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arturo Arduini
- Dipartimento di Chimica, Università di Parma, Parco Area delle Scienze
17/a, I-43124 Parma, Italy
| | - Rocco Bussolati
- Dipartimento di Chimica, Università di Parma, Parco Area delle Scienze
17/a, I-43124 Parma, Italy
| | - Alberto Credi
- Dipartimento di Chimica “G.
Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Andrea Secchi
- Dipartimento di Chimica, Università di Parma, Parco Area delle Scienze
17/a, I-43124 Parma, Italy
| | - Serena Silvi
- Dipartimento di Chimica “G.
Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Monica Semeraro
- Dipartimento di Chimica “G.
Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Margherita Venturi
- Dipartimento di Chimica “G.
Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
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