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Strianese M, Ferrara G, Vykhovanets V, Blal N, Guarnieri D, Landi A, Lamberti M, Peluso A, Pellecchia C. Sol-Gel Dipping Devices for H 2S Visualization. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23042023. [PMID: 36850620 PMCID: PMC9965526 DOI: 10.3390/s23042023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 05/14/2023]
Abstract
In this contribution we report the synthesis and full characterization, via a combination of different spectroscopies (e.g., 1H NMR, UV-vis, fluorescence, MALDI), of a new family of fluorescent zinc complexes with extended π-conjugated systems, with the final aim of setting up higher performance H2S sensing devices. Immobilization of the systems into a polymeric matrix for use in a solid-state portable device was also explored. The results provided proof-of-principle that the title complexes could be successfully implemented in a fast, simple and cost-effective H2S sensing device.
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2
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Recent Overview of Potent Antioxidant Activity of Coordination Compounds. Antioxidants (Basel) 2023; 12:antiox12020213. [PMID: 36829772 PMCID: PMC9952845 DOI: 10.3390/antiox12020213] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 01/18/2023] Open
Abstract
During recent decades, the complexation of organic ligands toward several metal ions of s-p and d-block has been applied as a plan to enhance its antioxidant performance. Due to their wide range of beneficial impacts, coordination compounds are widely used in industries, specifically in the medicinal and pharmaceutical fields. The activity is generally improved by chelation consequently knowing that the characteristics of both ligands and metals can lead to the development of greatly active compounds. Chelation compounds are a substitute for using the traditional synthetic antioxidants, because metal chelates present benefits, including a variety in geometry, oxidation states, and coordination number, that assist and favor the redox methods associated with antioxidant action. As well as understanding the best studied anti-oxidative assets of these compounds, coordination compounds are involved in the free radical scavenging process and protecting human organisms from the opposing effects of these radicals. The antioxidant ability can be assessed by various interrelated systems. The methodological modification offers the most knowledge on the antioxidant property of metal chelates. Colorimetric techniques are the most used, though electron paramagnetic resonance (EPR) is an alternative for metallic compounds, since color does not affect the results. Information about systems, with their benefits, and restrictions, permits a dependable valuation of the antioxidant performance of coordination compounds, as well as assisting application in various states wherever antioxidant drugs are required, such as in food protection, appropriate good-packaged foods, dietary supplements, and others. Because of the new exhaustive analysis of organic ligands, it has become a separate field of research in chemistry. The present investigation will be respected for providing a foundation for the antioxidant properties of organic ligands, future tests on organic ligands, and building high-quality antioxidative compounds.
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3
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Lewis Acidic Zinc(II) Complexes of Tetradentate Ligands as Building Blocks for Responsive Assembled Supramolecular Structures. CHEMISTRY 2023. [DOI: 10.3390/chemistry5010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
This review presents representative examples illustrating how the Lewis acidic character of the Zn(II) metal center in Zn(salen)-type complexes, as well as in complexes of other tetradentate ligands, and the nature of the medium govern their supramolecular aggregation, leading to the formation of a variety of supramolecular structures, either in solution or in the solid state. Stabilization of these Lewis acidic complexes is almost always reached through an axial coordination of a Lewis base, leading to a penta-coordinated square-pyramidal geometry around the metal center. The coverage is not exhaustive, mainly focused on their crystallographic structures, but also on their aggregation and sensing properties in solution, and on their self-assembled and responsive nanostructures, summarizing their salient aspects. The axial ligands can easily be displaced, either in solution or in the solid state, with suitable Lewis bases, thus being responsive supramolecular structures useful for sensing. This contribution represents the first attempt to relate some common features of the chemistry of different families of Zn(II) complexes of tetradentate ligands to their intrinsic Lewis acidic character.
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4
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Synthesis and Structural investigation of o-Vanillin scaffold Schiff base metal complexes: Biomolecular interaction and molecular docking studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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5
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Gurusamy S, Krishnaveni K, Sankarganesh M, Nandini Asha R, Mathavan A. Synthesis, characterization, DNA interaction, BSA/HSA binding activities of VO(IV), Cu(II) and Zn(II) Schiff base complexes and its molecular docking with biomolecules. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117045] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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6
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Ghorui T, Hens A, Pramanik K. Synthesis, photophysical properties and theoretical studies of pyrrole-based azoaromatic Zn(II) complexes in mixed aqueous medium. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Ahemed J, Pasha J, Rao D V, Kore R, Gade R, Bhongiri Y, Chetti P, Pola S. Synthesis of new Zn (II) complexes for photo decomposition of organic dye pollutants, industrial wastewater and photo-oxidation of methyl arenes under visible-light. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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8
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Ullmann S, Börner M, Kahnt A, Abel B, Kersting B. Green‐Emissive Zn
2+
Complex Supported by a Macrocyclic Schiff‐Base/Calix[4]arene‐Ligand: Crystallographic and Spectroscopic Characterization. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Steve Ullmann
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
- Institut für Nichtklassische Chemie e.V. Permoserstraße. 15 04318 Leipzig
| | - Martin Börner
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
- Leibniz Institute of Surface Engineering (IOM) Department of Functional Surfaces Permoserstr. 15 04318 Leipzig Germany
| | - Axel Kahnt
- Leibniz Institute of Surface Engineering (IOM) Department of Functional Surfaces Permoserstr. 15 04318 Leipzig Germany
| | - Bernd Abel
- Leibniz Institute of Surface Engineering (IOM) Department of Functional Surfaces Permoserstr. 15 04318 Leipzig Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie Universität Leipzig Linnéstraße 2 04103 Leipzig Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
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9
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Di Bella S. Lewis acidic zinc(II) salen-type Schiff-base complexes: sensing properties and responsive nanostructures. Dalton Trans 2021; 50:6050-6063. [PMID: 33876173 DOI: 10.1039/d1dt00949d] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this frontier article some peculiar characteristics of Zn(salen)-type Schiff-base complexes are reviewed. The paper is mainly focused on the most recent and relevant achievements on responsive supramolecular nanostructures and sensing properties, both of them related to the Lewis acidic character of the ZnII centre in these molecular species, providing an interpretation of these features. The sensing properties of Zn(salen)-type complexes mainly originate from optical spectroscopic changes associated with the formation of the adducts upon addition of a Lewis base (analyte), either by deaggregation of dimeric species or displacement of the solvent coordinated to the metal centre. In both cases the direct sensing is related either to the Lewis acidic character of the complex as well as to the Lewis basicity of the analyte. The formation of responsive nanostructures with fluorescent, and/or vapochromic, mechanochromic, and thermochromic characteristics is driven by non-mutual intermolecular ZnO interactions, further stabilized by π-π stacking interactions and/or interdigitation of the alkyl side groups. The Lewis acidic character is not a prerogative of Zn(salen)-type complexes of tetradentate Schiff-bases. Many other classes of ZnII complexes can possess this property. A correct interpretation of their chemistry is certainly useful for further development of these classical coordination compounds as new molecular materials.
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Affiliation(s)
- Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
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10
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Hylland KT, Gerz I, Wragg DS, Øien‐Ødegaard S, Tilset M. The Reactivity of Multidentate Schiff Base Ligands Derived from Bi‐ and Terphenyl Polyamines towards M(II) (M=Ni, Cu, Zn, Cd) and M(III) (M=Co, Y, Lu). Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Knut Tormodssønn Hylland
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Isabelle Gerz
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - David S. Wragg
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Sigurd Øien‐Ødegaard
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
| | - Mats Tilset
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
- Centre for Materials Science and Nanotechnology University of Oslo P.O. Box 1126 Blindern 0316 Oslo Norway
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11
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When the Metal Makes the Difference: Template Syntheses of Tridentate and Tetradentate Salen-Type Schiff Base Ligands and Related Complexes. CRYSTALS 2021. [DOI: 10.3390/cryst11050483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The reaction of organic molecules mediated by a metal center (template synthesis) can result in a final connectivity that may differ from the one obtained in the absence of the metal. The condensation of carbonyl fragments with primary amines form C=N iminic bonds, the so-called Schiff bases, which can act as ligands for the templating metal center by means of the lone pair on the nitrogen atom. This review focuses on the template methods for the reaction between a carbonyl compound (mainly salicylaldehyde) and a primary aliphatic diamine able to prevent the double condensation on both amine groups and obtain tridentate N2O ligands. These adducts, still having one free amino group, can further react, yielding tetradentate salen-type Schiff base ligands. A screening over the transition metals able to show such a template effect will be presented, with particular attention to copper(II), together with their peculiar reactivity and the available crystal structure of the metal complexes and related coordination geometries.
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12
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Munzi G, Failla S, Di Bella S. Highly selective and sensitive colorimetric/fluorometric dual mode detection of relevant biogenic amines. Analyst 2021; 146:2144-2151. [PMID: 33538722 DOI: 10.1039/d0an02336a] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Biogenic amines are involved in physiological roles in living organisms, but their excessive production or intake can induce undesired toxicological effects. As biogenic amines can be found in the process of food spoilage, they are considered an indicator of food quality and freshness, and their detection is of crucial importance in food safety. In this contribution, we report the fast and direct colorimetric and fluorometric sensing of biogenic amines by means of a dinuclear Zn(ii) Schiff-base complex. The selective and sensitive detection involves the formation of stable adducts between the dinuclear complex, acting as the Lewis acidic molecular tweezer, and biogenic di- or polyamines. The selectivity towards biogenic amines, even in the presence of common aliphatic, primary, secondary, or tertiary monoamines, heterocyclic amines, and amino acids, is demonstrated by competitive experiments. The quantitation of histamine in a fish matrix is easily achieved using a standard extraction procedure followed by simple colorimetric or fluorometric measurements.
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Affiliation(s)
- Gabriella Munzi
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
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13
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Borase JN, Mahale RG, Rajput SS, Shirsath DS. Design, synthesis and biological evaluation of heterocyclic methyl substituted pyridine Schiff base transition metal complexes. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04144-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
AbstractIn recent years heterocyclic Schiff base metal complexes attract more attention in biological application and also showing interesting co-ordination chemistry. In this research article a novel heterocyclic methyl-substituted pyridine Schiff base transition metal complexes of Fe(III), Co(III), Cu(II), and Ni(II) have been design and synthesized by reacting metal acetate or metal salts (FeCl3, CoOAc, CuOAc, NiOAc), with substituted heterocyclic ligand. All newly synthesized metalcomplexes were characterized by spectroscopic data and screened for elemental analysis, FT-IR, ESR, Magnetic susceptibility and TGA. The Electronic spectra and magnetic susceptibility measurements indicates that square planer and octahedral geometry of these complexes also suggest their structure in which (N, O) group acts as bidentate ligand. The thermal stability, decomposition rate and thermodynamic parameters of synthesized metal complexes were calculated by Freeman Carroll method. Also the biostatistical data of antimicrobial and anti-oxidant activities of synthesized metal complexes indicates moderate to good results.
Graphic abstract
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14
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Strianese M, Guarnieri D, Lamberti M, Landi A, Peluso A, Pellecchia C. Fluorescent salen-type Zn(II) Complexes As Probes for Detecting Hydrogen Sulfide and Its Anion: Bioimaging Applications. Inorg Chem 2020; 59:15977-15986. [PMID: 33047602 PMCID: PMC8015222 DOI: 10.1021/acs.inorgchem.0c02499] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Indexed: 12/11/2022]
Abstract
In this work, we investigate the mode of interaction of a family of fluorescent zinc complexes with HS- and H2S. Different experiments, performed by diverse spectroscopic techniques, provide evidence that HS- binds the zinc center of all the complexes under investigation. Treatment with neutral H2S exhibits a markedly different reactivity which indicates selectivity for HS- over H2S of the systems under investigation. Striking color changes, visible to the naked eye, occur when treating the systems with HS- or by an H2S flow. Accordingly, also the fluorescence is modulated by the presence of HS-, with the possible formation of multiple adducts. The results highlight the potential of the devised systems to be implemented as HS-/H2S colorimetric and fluorescent sensors. Bioimaging experiments indicate the potential of using this class of compounds as probes for the detection of H2S in living cells.
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Affiliation(s)
- Maria Strianese
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
| | - Daniela Guarnieri
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
| | - Marina Lamberti
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
| | - Alessandro Landi
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
| | - Andrea Peluso
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
| | - Claudio Pellecchia
- Dipartimento di Chimica e
Biologia “Adolfo Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Salerno, Italy
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15
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Hylland KT, Øien‐Ødegaard S, Heyn RH, Tilset M. Zinc Schiff Base Complexes Derived from 2,2'‐Diaminobiphenyls: Solution Behavior and Reactivity towards Nitrogen Bases. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000589] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | - Sigurd Øien‐Ødegaard
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
| | | | - Mats Tilset
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
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16
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Hylland KT, Øien‐Ødegaard S, Tilset M. The Suzuki–Miyaura Cross‐Coupling as the Key Step in the Synthesis of 2‐Aminobiphenyls and 2,2'‐Diaminobiphenyls: Application in the Synthesis of Schiff Base Complexes of Zn. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | - Sigurd Øien‐Ødegaard
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
| | - Mats Tilset
- Department of Chemistry University of Oslo P. O. Box 1033 Blindern 0315 Oslo Norway
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17
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Consiglio G, Oliveri IP, Cacciola S, Maccarrone G, Failla S, Di Bella S. Dinuclear zinc(ii) salen-type Schiff-base complexes as molecular tweezers. Dalton Trans 2020; 49:5121-5133. [PMID: 32219249 DOI: 10.1039/d0dt00494d] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this contribution, the synthesis and the unusual aggregation/deaggregation properties in solution of two dinuclear ZnII Schiff-base complexes of tetradentate Schiff-base units, having non-conjugated spacers between each molecular unit, are reported in comparison to the mononuclear model complex. Through detailed 1H NMR, DOSY NMR, optical absorption, fluorescence emission, and multivariate analysis of optical absorption data, emerge some interesting findings. In solution of non-coordinating solvents, these Lewis acidic species are characterized as monomers stabilized by formation of intramolecular aggregates, having distinct spectroscopic properties in comparison to intermolecular aggregates derived from the mononuclear model analogue. Instead, in coordinating solvents they exhibit a typical behaviour, with formation of stable adducts showing a strong fluorescence. Deaggregation studies using pyridine as reference Lewis base allowed establishing a larger thermodynamic stability of these intramolecular aggregates, in comparison to intermolecular aggregates, even larger than that of aggregates of conjugated multinuclear complexes. The combined analysis of spectroscopic data upon deaggregation with ditopic Lewis bases unambiguously demonstrated the formation of stable 1 : 1 adducts, with higher binding constants in comparison to those related to monotopic species. Therefore, the present Lewis acidic, dinuclear complexes behave as molecular tweezers of ditopic guests having a strong Lewis basicity.
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Affiliation(s)
- Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Salvatore Cacciola
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Giuseppe Maccarrone
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
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18
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Optical, electrochemical, thermal, biological and theoretical studies of some chloro and bromo based metal-salophen complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127107] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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19
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Tosi F, Stuart MCA, Wezenberg SJ, Feringa BL. Salen‐Based Amphiphiles: Directing Self‐Assembly in Water by Metal Complexation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Filippo Tosi
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Marc C. A. Stuart
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- Groningen Biomolecular Sciences and Biotechnology Institute University of Groningen Nijenborgh 7 9747 AG Groningen The Netherlands
| | - Sander J. Wezenberg
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
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20
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Tosi F, Stuart MCA, Wezenberg SJ, Feringa BL. Salen-Based Amphiphiles: Directing Self-Assembly in Water by Metal Complexation. Angew Chem Int Ed Engl 2019; 58:14935-14939. [PMID: 31389650 PMCID: PMC6899911 DOI: 10.1002/anie.201908010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/05/2019] [Indexed: 11/09/2022]
Abstract
Tuning morphologies of self-assembled structures in water is a major challenge. Herein we present a salen-based amphiphile which, using complexation with distinct transition metal ions, allows to control effectively the self-assembly morphology in water, as observed by Cryo-TEM and confirmed by DLS measurements. Applying this strategy with various metal ions gives a broad spectrum of self-assembled structures starting from the same amphiphilic ligand (from cubic structures to vesicles and micelles). Thermogravimetric analysis and electric conductivity measurements reveal a key role for water coordination apparently being responsible for the distinct assembly behavior.
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Affiliation(s)
- Filippo Tosi
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Marc C A Stuart
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.,Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
| | - Sander J Wezenberg
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.,Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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21
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Consiglio G, Oliveri IP, Failla S, Di Bella S. On the Aggregation and Sensing Properties of Zinc(II) Schiff-Base Complexes of Salen-Type Ligands. Molecules 2019; 24:E2514. [PMID: 31324053 PMCID: PMC6651702 DOI: 10.3390/molecules24132514] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/18/2022] Open
Abstract
The zinc(II) ion forms stable complexes with a wide variety of ligands, but those related to Schiff-bases are among the most largely investigated. This review deals with the peculiar aggregation characteristics of Zn(II) Schiff-base complexes from tetradentate N2O2 salen-type ligands, L, derivatives from salicylaldehydes and 1,2-diamines, and is mostly focused on their spectroscopic properties in solution. Thanks to their Lewis acidic character, ZnL complexes show interesting structural, nanostructural, and aggregation/deaggregation properties in relation to the absence/presence of a Lewis base. Deaggregation of these complexes is accompanied by relevant changes of their spectroscopic properties that can appropriately be exploited for sensing Lewis bases. Thus, ZnL complexes have been investigated as chromogenic and fluorogenic chemosensors of charged and neutral Lewis bases, including cell imaging, and have shown to be selective and sensitive to the Lewis basicity of the involved species. From these studies emerges that these popular, Lewis acidic bis(salicylaldiminato)Zn(II) Schiff-base complexes represent classical coordination compounds for modern applications.
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Affiliation(s)
- Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy.
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22
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Kushvaha SK, Arumugam S, Shankar B, Sarkar RS, Ramkumar V, Mondal KC. Isolation and Characterization of Different Homometallic and Heterobimetallic Complexes of Nickel and Zinc Ions by Controlling Molar Ratios and Solvents. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900338] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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23
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Structural, photophysical and electrochemical properties of a novel cardanol-based salophen ligand and its Mn(II) complex. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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24
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Kushvaha SK, Shankar B, Gorantla NVTSM, Mondal KC. A Fluorescent Hexanuclear Zn(II) Complex. ChemistrySelect 2019. [DOI: 10.1002/slct.201803745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Hasdemir B, Yaşa H, Akkamış Y. Synthesis and antioxidant activities of novel N
-aryl (and N
-alkyl) γ- and δ-imino esters and ketimines. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Belma Hasdemir
- Department of Chemistry, Faculty of Engineering; Istanbul University-Cerrahpaşa; Istanbul Turkey
| | - Hasniye Yaşa
- Department of Chemistry, Faculty of Engineering; Istanbul University-Cerrahpaşa; Istanbul Turkey
| | - Yağmur Akkamış
- Istanbul University-Cerrahpaşa, Science Institute; Chemistry Department; Istanbul Turkey
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26
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Khaligh NG, Ling OC, Mihankhah T, Johan MR, Ching JJ. Mechanosynthesis of N-Methyl Imines Using Recyclable Imidazole-Based Acid-Scavenger: In Situ Formed Ionic Liquid as Catalyst and Dehydrating Agent. Aust J Chem 2019. [DOI: 10.1071/ch18408] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
1,1′-(1,4-Butanediyl)bis(imidazole) was prepared by a modified method and its application as an efficient promoter was demonstrated for the mechanosynthesis of N-methyl imines using ball milling as a non-conventional process under solvent-free conditions. In this new protocol design, the bis-imidazole acted as a recyclable acid-scavenging agent. This efficient approach to the N-methyl imines displays a combination of the synthetic virtues of a non-conventional condensation reaction with ecological benefits and convenience of a facile mechanosynthetic process. The current method has advantages such as reduced waste by avoiding solvent, exclusion of hazardous materials during the reaction, elimination of handling an anhydrous gas in an evacuated container or a solution of methylamine in ethanol, good yields for relatively unreactive benzaldehydes containing electron-donating substituents, short reaction times, and metal- and acid-free conditions. Furthermore, the promoter was easily regenerated and reused several times with no significant loss of activity.
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27
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Rigamonti L, Forni A, Righetto S, Pasini A. Push–pull unsymmetrical substitution in nickel(ii) complexes with tetradentate N2O2 Schiff base ligands: synthesis, structures and linear–nonlinear optical studies. Dalton Trans 2019; 48:11217-11234. [DOI: 10.1039/c9dt01216h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Push–pull unsymmetrical substitution efficiently modulates the electronic, linear and nonlinear optical properties of nickel(ii) complexes with salen-type ligands.
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Affiliation(s)
- Luca Rigamonti
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena
- Italy
- Dipartimento di Chimica
| | - Alessandra Forni
- Istituto di Scienze e Tecnologie Molecolari
- Consiglio Nazionale delle Ricerche (ISTM-CNR)
- 20133 Milano
- Italy
- Dipartimento di Chimica
| | - Stefania Righetto
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Alessandro Pasini
- Dipartimento di Chimica
- Università degli Studi di Milano
- 20133 Milano
- Italy
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28
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Yao Y, Yin HY, Ning Y, Wang J, Meng YS, Huang X, Zhang W, Kang L, Zhang JL. Strong Fluorescent Lanthanide Salen Complexes: Photophysical Properties, Excited-State Dynamics, and Bioimaging. Inorg Chem 2018; 58:1806-1814. [PMID: 30576111 DOI: 10.1021/acs.inorgchem.8b02376] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis, excited-state dynamics, and biological application of luminescent lanthanide salen complexes (Ln = Lu, Gd, Eu, Yb, salen = N, N'-bis(salicylidene)ethylenediamine-based ligands) with sandwich structures are described. Among them, Lu(III) complexes show unusually strong ligand-centered fluorescence with quantum yields up to 62%, although the metal center is close to a chromophore ligand. The excited-state dynamic studies including ultrafast spectroscopy for Ln-salen complexes revealed that their excited states are solely dependent on the salen ligands and the ISC rates are slow (108-109 s-1). Importantly, time-dependent density functional theory calculations attribute the low energy transfer efficiency to the weak spin-orbital coupling (SOC) between the singlet and triplet excited states. More importantly, Lu-salen has been applied as a molecular platform to construct fluorescence probes with organelle specificity in living cell imaging, which demonstrates the advantages of the sandwich structures as being capable of preventing intramolecular metal-ligand interactions and behaviors different from those of the previously reported Zn-salens. Most importantly, the preliminary study for in vivo imaging using a mouse model demonstrated the potential application of Ln coordination complexes in therapeutic and diagnostic bioimaging beyond living cells or in vitro.
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Affiliation(s)
- Yuhang Yao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China
| | - Hao-Yan Yin
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China
| | - Yingying Ning
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China
| | - Jian Wang
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , People's Republic of China
| | - Yin-Shan Meng
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China
| | - Xinyue Huang
- Center for Advanced Quantum Studies, Department of Physics and Applied Optics Beijing Area Major Laboratory , Beijing Normal University , Beijing 100875 , People's Republic of China
| | - Wenkai Zhang
- Center for Advanced Quantum Studies, Department of Physics and Applied Optics Beijing Area Major Laboratory , Beijing Normal University , Beijing 100875 , People's Republic of China
| | - Lei Kang
- Department of Nuclear Medicine , Peking University First Hospital , Beijing 100034 , People's Republic of China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , People's Republic of China
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29
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Silva YF, Riga BA, Deflon VM, Souza JR, Silva LHF, Machado AEH, Maia PIS, Valdemiro P. CJ, Goi BE. Organometallic-mediated radical polymerization using well-defined Schiff base cobalt(II) complexes. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1527322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yan F. Silva
- Faculdade de Ciências e Tecnologia, UNESP – Univ. Estadual Paulista, Presidente Prudente, SP, Brazil
| | - Beatriz A. Riga
- Faculdade de Ciências e Tecnologia, UNESP – Univ. Estadual Paulista, Presidente Prudente, SP, Brazil
| | - Victor M. Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil
| | - Jhonathan R. Souza
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Leonardo H. F. Silva
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Antonio E. H. Machado
- Instituto de Química, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Pedro Ivo S. Maia
- Departamento de Química, Universidade Federal do Triangulo Mineiro, Uberaba, MG, Brazil
| | - Carvalho-Jr Valdemiro P.
- Faculdade de Ciências e Tecnologia, UNESP – Univ. Estadual Paulista, Presidente Prudente, SP, Brazil
| | - Beatriz E. Goi
- Faculdade de Ciências e Tecnologia, UNESP – Univ. Estadual Paulista, Presidente Prudente, SP, Brazil
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30
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Cailotto S, Amadio E, Facchin M, Selva M, Pontoglio E, Rizzolio F, Riello P, Toffoli G, Benedetti A, Perosa A. Carbon Dots from Sugars and Ascorbic Acid: Role of the Precursors on Morphology, Properties, Toxicity, and Drug Uptake. ACS Med Chem Lett 2018; 9:832-837. [PMID: 30128076 PMCID: PMC6088351 DOI: 10.1021/acsmedchemlett.8b00240] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/16/2018] [Indexed: 11/28/2022] Open
Abstract
There is the need for reproducible, simple, high-yielding synthetic protocols aimed at obtaining carbon dots (CDs) with controlled fluorescence, photothermal and photochemical behavior, surface properties, biocompatibility, tumor targeting ability, drug absorption biodistribution, and tumor uptake. This Letter describes a systematic study on the effect of glucose, fructose, and ascorbic acid as starting materials for the preparation of highly luminescent CDs, characterized by a blue emission. Their composition and morphology are investigated by titration of OH surface groups, spectroscopic techniques, and high-resolution transmission electron microscopy (HR-TEM), and their toxicity was tested toward HeLa cells. CDs made using fructose were toxic, while those made from glucose and ascorbic acid showed good biocompatibility. The reproducible and simple synthetic procedure yields luminescent biomass-derived CDs for combined cancer therapy and diagnostics. Their doxorubicin (DOX) drug uptake was measured by spectrofluorimetry, indicating a crucial role of the morphologies of the CDs in controlling DOX loading. The glucose derived CDs showed up to 28% w/w of DOX loading.
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Affiliation(s)
- Simone Cailotto
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Emanuele Amadio
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Manuela Facchin
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Maurizio Selva
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Enrico Pontoglio
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Flavio Rizzolio
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
- Experimental
and Clinical Pharmacology Unit, C.R.O. National
Cancer Institute, 33081 Aviano, Italy
| | - Pietro Riello
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Giuseppe Toffoli
- Experimental
and Clinical Pharmacology Unit, C.R.O. National
Cancer Institute, 33081 Aviano, Italy
| | - Alvise Benedetti
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
| | - Alvise Perosa
- Department
of Molecular Sciences and Nanosystems, Università
Ca’ Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy
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31
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Ullmann S, Schnorr R, Laube C, Abel B, Kersting B. Photoluminescence properties of tetrahedral zinc(ii) complexes supported by calix[4]arene-based salicylaldiminato ligands. Dalton Trans 2018; 47:5801-5811. [PMID: 29644369 DOI: 10.1039/c8dt00757h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and photophysical properties of four new hybrid salicylaldiminato-calix[4]arene ligands and their corresponding zinc(ii) complexes are described. The Schiff bases were obtained from condensation reactions between cone-25,27-di(aminoethoxy)-26,28-dihydroxy-calix[4]arene and salicylaldehyde (H2L1) or o-vanillin (H2L2) and 1,3-alt-25,27-di(aminoethoxy)-26,28-di(n-propyloxy)-calix[4]arene and 3,5-di-tert-butyl-salicylaldehyde (H2L3) or o-vanillin (H2L4). Complexation reactions were investigated by ESI-MS, IR, NMR, UV-vis absorption and steady-state and time resolved fluorescence spectroscopy, and X-ray crystallography. All ligands support 1 : 1 complexes (ZnL1-ZnL4), with equilibrium constants derived from absorption spectrophotometry in the range log K11 = 5.5-8.2 (MeCN or MeOH/CH2Cl2, I = 0.01 M). The zinc complexes show blue fluorescence, both in solution as well as in the solid state, with λem, Φf, and τ ranging from 472-504 nm, 0.11-0.60, and 2-9 ns, respectively. The nature of the substituents on the salicylaldiminato fragments was found to be the main parameter that influences the photophysical properties of the zinc complexes. Insights into the electronic nature of the UV-vis transitions were obtained with time dependent density functional theory (TD-DFT) calculations.
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Affiliation(s)
- Steve Ullmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany.
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32
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Erxleben A. Transition metal salen complexes in bioinorganic and medicinal chemistry. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.06.060] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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A Cryptand-Type Aluminum Tris(salophen) Complex: Synthesis, Characterization, and Cell Imaging Application. INORGANICS 2018. [DOI: 10.3390/inorganics6010020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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34
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Supramolecular Aggregation of a New Substituted Bis(salicylaldiminato)zinc(II) Schiff-Base Complex Derived from trans-1,2-Diaminocyclohexane. INORGANICS 2018. [DOI: 10.3390/inorganics6010008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
In this contribution is reported the synthesis, characterization, and aggregation properties in solution of a novel Zn(II) complex, (R)-2, derived from the enantiopure chiral trans-1,2-diaminocyclohexane and a substituted salicylaldehyde. Detailed 1H NMR, DOSY NMR, optical absorption, and circular dichroism spectroscopic studies and chemical evidence allowed to investigate the nature of aggregate species in solution. The high solubility of (R)-2 in solution of the non-coordinating chloroform solvent leads to formation of various aggregates, some of them consisting of large oligomers estimated to contain up to 27 monomeric units. The chiral trans-stereochemistry of the bridging diamine favors a different aggregation mode in these complexes, both in the oligomers and dimers, involving a tetrahedral coordination geometry around the metal center. Overall data suggest the formation of helical oligomers, (ZnL)n, in freshly prepared chloroform solutions which, by standing or heating, evolve towards a more thermodynamically stable, dinuclear double-helicate Zn2L2 dimer.
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35
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Oliveri IP, Malandrino G, Mirabella S, Di Bella S. Vapochromic and chemiresistive characteristics of a nanostructured molecular material composed of a zinc(ii)-salophen complex. Dalton Trans 2018; 47:15977-15982. [PMID: 30378618 DOI: 10.1039/c8dt03904f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ZnII Schiff-base complex shows vapochromic and chemiresistive behaviour when exposed to vapours of a Lewis base.
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Affiliation(s)
| | | | - Salvo Mirabella
- Dipartimento di Fisica ed Astronomia
- Università di Catania
- I-95123 Catania
- Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche
- Università di Catania
- I-95125 Catania
- Italy
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36
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Oliveri IP, Forte G, Consiglio G, Failla S, Di Bella S. Aggregates of Defined Stereochemical Scaffolds: A Study in Solution of a Zinc(II) Schiff Base Complex Derived from the Enantiopure trans-1,2-Cyclopentanediamine. Inorg Chem 2017; 56:14206-14213. [DOI: 10.1021/acs.inorgchem.7b02341] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche and ‡Dipartimento di Scienze del Farmaco, Università di Catania, I-95125 Catania, Italy
| | - Giuseppe Forte
- Dipartimento di Scienze Chimiche and ‡Dipartimento di Scienze del Farmaco, Università di Catania, I-95125 Catania, Italy
| | - Giuseppe Consiglio
- Dipartimento di Scienze Chimiche and ‡Dipartimento di Scienze del Farmaco, Università di Catania, I-95125 Catania, Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche and ‡Dipartimento di Scienze del Farmaco, Università di Catania, I-95125 Catania, Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche and ‡Dipartimento di Scienze del Farmaco, Università di Catania, I-95125 Catania, Italy
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37
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Chakraborty S, Mondal P, Krishna Prasad S, Shankar Rao D, Bhattacharjee CR. Zinc(II)-salphen complexes bearing long alkoxy side arms: Synthesis, solvent dependent aggregation, and spacer group substituent effect on mesomorphism and photophysical property. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.078] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Yin HY, Tang J, Zhang JL. Introducing Metallosalens into Biological Studies: The Renaissance of Traditional Coordination Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700695] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hao-Yan Yin
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
| | - Juan Tang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
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39
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Khanmohammadi H, Arab V, Rezaeian K, Talei GR, Pass M, Shabani N. Diaminomaleonitrile-based azo receptors: Synthesis, DFT studies and their antibacterial activities. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Ni(II) and Zn(II) Complexes Containing Alkynyl Functionalized Salicylaldimine Ligand and Heterocyclic Coligand: Synthesis, Characterization and Luminescence Properties. J Fluoresc 2017; 27:841-851. [PMID: 28101797 DOI: 10.1007/s10895-016-2020-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/29/2016] [Indexed: 10/20/2022]
Abstract
Some nickel(II) and zinc(II) complexes of the type [Ni(L)(phen/bipy)]X (1a-6a) and [Zn(L) (phen/bipy)]X (1b-6b) (where L = 2-{(E)-[(4-trimethylsilylethynylphenyl)imino]methyl}-4-(4-nitro phenylethynyl)phenol; phen = 1, 10-phenanthroline, bipy = 2, 2´-bipyridine; X = ClO4-, BF4-, PF6-) have been prepared and characterized on the basis of elemental analyses, FTIR, 1H NMR and mass spectral studies. The molecular structure of L was determined by single crystal X-ray diffraction studies. The electrochemical behaviour of the Ni(II) complexes indicate that the phen complexes appears at more positive potential as compared to those for bipy complexes, as a consequence of its strong π-acidic character. TGA was carried out to study the thermal behavior of the complexes. Room temperature luminescence is observed for all complexes corresponds to π → π* ILCT transition. The size of the counter anion and heterocyclic coligands phen and bipy shows marked effect on emission properties of the complexes.
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41
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Oliveri IP, Di Bella S. Lewis basicity of relevant monoanions in a non-protogenic organic solvent using a zinc(ii) Schiff-base complex as a reference Lewis acid. Dalton Trans 2017; 46:11608-11614. [PMID: 28825067 DOI: 10.1039/c7dt02821k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The Lewis basicity of relevant anions is reported for the first time and compared with that of neutral bases.
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Affiliation(s)
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche
- Università di Catania
- I-95125 Catania
- Italy
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42
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Forte G, Oliveri IP, Consiglio G, Failla S, Di Bella S. On the Lewis acidic character of bis(salicylaldiminato)zinc(ii) Schiff-base complexes: a computational and experimental investigation on a series of compounds varying the bridging diimine. Dalton Trans 2017; 46:4571-4581. [DOI: 10.1039/c7dt00574a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The electronic effects induced by the geometry of the 1,2-diimine bridge control the Lewis acidic character in a series of ZnII Shiff-base complexes.
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Affiliation(s)
- Giuseppe Forte
- Dipartimento di Scienze del Farmaco
- Università di Catania
- I-95125 Catania
- Italy
| | | | - Giuseppe Consiglio
- Dipartimento di Scienze Chimiche
- Università di Catania
- I-95125 Catania
- Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche
- Università di Catania
- I-95125 Catania
- Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche
- Università di Catania
- I-95125 Catania
- Italy
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43
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Ren R, Wang Y, Liu D, Sun W. Facile preparation of a novel nickel-containing metallopolymer via RAFT polymerization. Des Monomers Polym 2016; 20:300-307. [PMID: 29491801 PMCID: PMC5812193 DOI: 10.1080/15685551.2016.1257378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 10/28/2016] [Indexed: 11/04/2022] Open
Abstract
While the metallocene polymers were comprehensively studied, other metallopolymers are rarely explored. The major challenge is the lack of a synthetic platform for the preparation of metal coordinated derivatives, monomers, and polymers. Therefore, the development of a facile synthesis of new metal coordinated monomers and polymers is critically needed. A novel successfully synthesized methacrylate-containing nickel complex is reported in this communication. Controlled RAFT polymerizations are further carried out to prepare a series of side-chain nickel containing polymers with different molecular weight and narrow Polydispersity Index (PDI). This new metallopolymer performs specific electrochemical and excellent thermal properties. This study provides a novel and convenient strategy to prepare metallopolymer with controllable molecular weight, which has potential applications in assembled, catalytic and magnetic materials.
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Affiliation(s)
- Rong Ren
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Yanhua Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Dizheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Weilin Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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44
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Gorczyński A, Harrowfield JM, Patroniak V, Stefankiewicz AR. Quaterpyridines as Scaffolds for Functional Metallosupramolecular Materials. Chem Rev 2016; 116:14620-14674. [DOI: 10.1021/acs.chemrev.6b00377] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adam Gorczyński
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
| | - Jack M. Harrowfield
- Institut
de Science et d’Ingénierie Supramoléculaires
(ISIS), Université de Strasbourg, 8 allée Gaspard Monge, 67083 Strasbourg, France
| | - Violetta Patroniak
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Faculty
of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61614 Poznań, Poland
- Centre
for Advanced Technologies, Adam Mickiewicz University, Umultowska
89c, 61-614 Poznań, Poland
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45
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Khan T, Vaidya S, Mhatre DS, Datta A. The Prospect of Salophen in Fluorescence Lifetime Sensing of Al3+. J Phys Chem B 2016; 120:10319-10326. [DOI: 10.1021/acs.jpcb.6b05854] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Tuhin Khan
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Shefali Vaidya
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Darshan S. Mhatre
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Anindya Datta
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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46
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Consiglio G, Oliveri IP, Failla S, Di Bella S. Supramolecular Aggregates of Defined Stereochemical Scaffolds: Aggregation/Deaggregation in Schiff-Base Zinc(II) Complexes Derived from Enantiopure trans-1,2-Diaminocyclohexane. Inorg Chem 2016; 55:10320-10328. [DOI: 10.1021/acs.inorgchem.6b01580] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche, Università di Catania, I-95125 Catania, Italy
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47
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Chakraborty S, Mondal P, Prasad SK, Rao DSS, Bhattacharjee CR. Induction of Mesomorphism through Supramolecular Assembly in Metal Coordination Compounds of “salphen”‐Type Schiff Bases: Photoluminescence and Solvatochromism. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600513] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Paritosh Mondal
- Department of ChemistryAssam University788011SilcharAssamIndia
| | - S. Krishna Prasad
- Centre for Nano and Soft Matter Sciences560013Jalahalli, BangaloreIndia
| | - D. S. Shankar Rao
- Centre for Nano and Soft Matter Sciences560013Jalahalli, BangaloreIndia
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48
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Cheng J, Gou F, Zhang X, Shen G, Zhou X, Xiang H. A Class of Multiresponsive Colorimetric and Fluorescent pH Probes via Three Different Reaction Mechanisms of Salen Complexes: A Selective and Accurate pH Measurement. Inorg Chem 2016; 55:9221-9. [DOI: 10.1021/acs.inorgchem.6b01212] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jinghui Cheng
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Fei Gou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xiaohong Zhang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Guangyu Shen
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Haifeng Xiang
- College of Chemistry, Sichuan University, Chengdu 610041, China
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49
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Gaeta M, Oliveri IP, Fragalà ME, Failla S, D'Urso A, Di Bella S, Purrello R. Chirality of self-assembled achiral porphyrins induced by chiral Zn(ii) Schiff-base complexes and maintained after spontaneous dissociation of the templates: a new case of chiral memory. Chem Commun (Camb) 2016; 52:8518-21. [DOI: 10.1039/c6cc04018g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We report a case of chiral memory in porphyrin aggregates templated by chiral Zn(ii) Schiff-base complexes which readily dissociate in aqueous solution.
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Affiliation(s)
- Massimiliano Gaeta
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Ivan Pietro Oliveri
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Maria Elena Fragalà
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Salvatore Failla
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Alessandro D'Urso
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Santo Di Bella
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
| | - Roberto Purrello
- Dipartimento di Scienze Chimiche
- Università degli Studi di Catania
- I-95125 Catania
- Italy
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50
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Gallegos C, Camacho R, Valiente M, Cuenca T, Cano J. Cyclopentadienyl-based Mg complexes in the intramolecular hydroamination of aminoalkenes: mechanistic evidence for cationic versus neutral magnesium derivatives. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01040c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Mechanistic evidence in the catalytic hydroamination of aminoalkenes for a cationic magnesium derivative.
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Affiliation(s)
- Carlos Gallegos
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Ruth Camacho
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Mercedes Valiente
- Dpto de Química Física
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Tomás Cuenca
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
| | - Jesús Cano
- Dpto de Química Inorgánica
- Universidad de Alcalá
- 28871 Alcalá de Henares
- Spain
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