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Msellem P, Dekthiarenko M, Hadj Seyd N, Vives G. Switchable molecular tweezers: design and applications. Beilstein J Org Chem 2024; 20:504-539. [PMID: 38440175 PMCID: PMC10910529 DOI: 10.3762/bjoc.20.45] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/12/2024] [Indexed: 03/06/2024] Open
Abstract
Switchable molecular tweezers are a unique class of molecular switches that, like their macroscopic analogs, exhibit mechanical motion between an open and closed conformation in response to stimuli. Such systems constitute an essential component of artificial molecular machines. This review will present selected examples of switchable molecular tweezers and their potential applications. The first part will be devoted to chemically responsive tweezers, including stimuli such as pH, metal coordination, and anion binding. Then, redox-active and photochemical tweezers will be presented.
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Affiliation(s)
- Pablo Msellem
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Maksym Dekthiarenko
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Nihal Hadj Seyd
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
| | - Guillaume Vives
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France
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Abstract
Drawing inspiration from allosteric proteins, a zigzag-shaped π-conjugation was structurally engineered into a tweezer-like ionophore having multiple disparate binding sites. When a soft metal ion binds to the central tridentate ligand motif, the rigid backbone folds, bringing two macrocyclic arms into close proximity. Stabilized by a coordinating anion, the tweezer-like conformation of the resulting metalloligand recruits a hard cation to form a sandwich-like complex with a remarkably enhanced binding affinity and selectivity.
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Affiliation(s)
- Suk-Il Kang
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Hyun Lee
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Sungryul Bae
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Dongwhan Lee
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
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Munzi G, Consiglio G, Failla S, Di Bella S. Binding Properties of a Dinuclear Zinc(II) Salen-Type Molecular Tweezer with a Flexible Spacer in the Formation of Lewis Acid-Base Adducts with Diamines. Inorganics 2021; 9:49. [DOI: 10.3390/inorganics9060049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this paper we report the binding properties, by combined 1H NMR, optical absorption, and fluorescence studies, of a molecular tweezer composed of two Zn(salen)-type Schiff-base units connected by a flexible spacer, towards a series of ditopic diamines having a strong Lewis basicity, with different chain length and rigidity. Except for the 1,2-diaminoethane, in all other cases the formation of stable 1:1 Lewis acid-base adducts with large binding constants is demonstrated. For α,ω-aliphatic diamines, binding constants progressively increase with the increasing length of the alkyl chain, thanks to the flexible nature of the spacer and the parallel decreased conformational strain upon binding. Stable adducts are also found even for short diamines with rigid molecular structures. Given their preorganized structure, these latter species are not subjected to loss of degrees of freedom. The binding characteristics of the tweezer have been exploited for the colorimetric and fluorometric selective and sensitive detection of piperazine.
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Li H, Guan Q, Jia Z, Wang X. Theoretical study of switching characteristics of molecular tweezers based on bis(Zn-salphen). J Mol Model 2020; 26:265. [DOI: 10.1007/s00894-020-04527-w] [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] [Received: 05/21/2020] [Accepted: 08/31/2020] [Indexed: 10/23/2022]
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Miroslaw B. Homo- and Hetero-Oligonuclear Complexes of Platinum Group Metals (PGM) Coordinated by Imine Schiff Base Ligands. Int J Mol Sci 2020; 21:E3493. [PMID: 32429112 PMCID: PMC7278988 DOI: 10.3390/ijms21103493] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
Chemistry of Schiff base (SB) ligands began in 1864 due to the discovery made by Hugo Schiff (Schiff, H., Justus Liebigs Ann. der Chemie 1864, 131 (1), 118-119). However, there is still a vivid interest in coordination compounds based on imine ligands. The aim of this paper is to review the most recent concepts on construction of homo- and hetero-oligonuclear Schiff base coordination compounds narrowed down to the less frequently considered complexes of platinum group metals (PGM). The combination of SB and PGM in oligonuclear entities has several advantages over mononuclear or polynuclear species. Such complexes usually exhibit better electroluminescent, magnetic and/or catalytic properties than mononuclear ones due to intermetallic interactions and frequently have better solubility than polymers. Various construction strategies of oligodentate imine ligands for coordination of PGM are surveyed including simple imine ligands, non-innocent 1,2-diimines, chelating imine systems with additional N/O/S atoms, classic N2O2-compartmental Schiff bases and their modifications resulting in acyclic fused ligands, macrocycles such as calixsalens, metallohelical structures, nano-sized molecular wheels and hybrid materials incorporating mesoionic species. Co-crystallization and formation of metallophilic interactions to extend the mononuclear entities up to oligonuclear coordination species are also discussed.
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Affiliation(s)
- Barbara Miroslaw
- Department of General and Coordination Chemistry and Crystallography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin, Poland
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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: 13] [Impact Index Per Article: 3.3] [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
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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Li H, Zheng X, Jia Z, Wang X. Theoretical study on noncovalent interaction of molecular tweezers by Zn(II) salphen-azo-crown ether triads receptor. J Mol Model 2020; 26:39. [DOI: 10.1007/s00894-020-4301-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 01/17/2020] [Indexed: 10/25/2022]
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Doistau B, Jiménez JR, Guerra S, Besnard C, Piguet C. Key Strategy for the Rational Incorporation of Long-Lived NIR Emissive Cr(III) Chromophores into Polymetallic Architectures. Inorg Chem 2020; 59:1424-1435. [PMID: 31909978 DOI: 10.1021/acs.inorgchem.9b03163] [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: 11/29/2022]
Abstract
The CrIIIN6 chromophores are particularly appealing for low-energy sensitization via energy transfer processes since they show extremely long excited state lifetimes reaching the millisecond range in the technologically crucial near-infrared domain. However, their properties were barely harnessed in multimetallic structures because of the lack of both monitoring methods and accessible synthetic pathways. We herein report a remedy to monitor and control the formation of CrIII-containing assemblies in solution via the design of a CrIIIN6 inert "complex-as-ligand" that can be included into polymetallic architectures. As a proof of concept, these CrN6 building blocks were reacted in solution with ZnII or FeII to give extended trinuclear linear Cr-M-Cr assemblies, the structure of which could be addressed by NMR spectroscopy despite the presence of two slowly relaxing CrIII paramagnetic centers. In addition to long CrIII excited state lifetimes and weak sensitivity to oxygen quenching, these polymetallic assemblies display controlled CrIII to MII energy transfers, which pave the way for use of the "complex-as-ligand" strategy for introducing photophysically active CrIII probes into light-converting polymetallic devices.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Sebastiano Guerra
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Céline Besnard
- Laboratory of Crystallography , University of Geneva , 24 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai Ernest Ansermet , CH-1211 Geneva 4 , Switzerland
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Doistau B, Benda L, Cantin JL, Cador O, Pointillart F, Wernsdorfer W, Chamoreau LM, Marvaud V, Hasenknopf B, Vives G. Dual switchable molecular tweezers incorporating anisotropic Mn III-salphen complexes. Dalton Trans 2020; 49:8872-8882. [PMID: 32530022 DOI: 10.1039/d0dt01465f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An alternative strategy for the synthesis of terpyridine based switchable molecular tweezers has been developed to incorporate anisotropic Mn(iii)-salphen complexes. The free ligand was synthesized using a building block strategy based on Sonogashira coupling reactions and was then selectively metalated with manganese in a last step. The conformation of the tweezers was switched from an open 'W' shaped form to a closed 'U' form by Zn(ii) coordination to the terpyridine unit bringing the two Mn-salphen moieties in close spatial proximity as confirmed by X-ray crystallography. An alternate switching mechanism was observed by the intercalation of a bridging cyanide ligand between the two Mn-salphen moieties that resulted in the closing of the tweezers. These dual stimuli are attractive for achieving multiple controls of the mechanical motion of the tweezers. A crystallographic structure of unexpected partially oxidized closed tweezers was also obtained. One of the two Mn-salphen moieties underwent a ligand-centered oxidation of an imino to an amido group allowing an intramolecular Mn-Oamide-Mn linkage. The magnetic properties of the manganese(iii) dimers were investigated to evaluate the magnetic exchange interaction and analyze the single molecule magnet behavior.
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
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Benda L, Doistau B, Rossi-Gendron C, Chamoreau LM, Hasenknopf B, Vives G. Substrate-dependent allosteric regulation by switchable catalytic molecular tweezers. Commun Chem 2019. [DOI: 10.1038/s42004-019-0246-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractAllosteric regulation is exploited by biological systems to regulate the activity and/or selectivity of enzymatic reactions but remains a challenge for artificial catalysts. Here we report switchable terpy(Zn-salphen)2 molecular tweezers and their metal-dependent allosteric regulation of the acetylation of pyridinemethanol isomers. Zinc-salphen moieties can both act as a Lewis acid to activate the anhydride reagents and provide a binding site for pyridinemethanol substrates. The tweezers’ conformation can be reversibly switched between an open and a closed form by a metal ion stimulus. Both states offer distinct catalytic profiles, with closed tweezers showing superior catalytic activity towards ortho substrates, while open tweezers presenting higher rate for the acetylation of meta and para substrates. This notable substrate dependent allosteric response is rationalized by a combination of experimental results and calculations supporting a bimetallic reaction in the closed form for ortho substrate and an inhibition of the cavity for meta and para substrates.
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Goswami A, Saha S, Biswas PK, Schmittel M. (Nano)mechanical Motion Triggered by Metal Coordination: from Functional Devices to Networked Multicomponent Catalytic Machinery. Chem Rev 2019; 120:125-199. [DOI: 10.1021/acs.chemrev.9b00159] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Abir Goswami
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Pronay Kumar Biswas
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strase 2, D-57068 Siegen, Germany
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Fan C, Wei L, Niu T, Rao M, Cheng G, Chruma JJ, Wu W, Yang C. Efficient Triplet–Triplet Annihilation Upconversion with an Anti-Stokes Shift of 1.08 eV Achieved by Chemically Tuning Sensitizers. J Am Chem Soc 2019; 141:15070-15077. [PMID: 31469266 DOI: 10.1021/jacs.9b05824] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chunying Fan
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Lingling Wei
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Tong Niu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Ming Rao
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Guo Cheng
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Jason J. Chruma
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Wanhua Wu
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
| | - Cheng Yang
- Key Laboratory of Green Chemistry & Technology, College of Chemistry, State Key Laboratory of Biotherapy, West China Medical Center, and Healthy Food Evaluation Research Center, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China
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Mbarek A, Moussa G, Chain JL. Pharmaceutical Applications of Molecular Tweezers, Clefts and Clips. Molecules 2019; 24:molecules24091803. [PMID: 31075983 PMCID: PMC6539068 DOI: 10.3390/molecules24091803] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 12/25/2022] Open
Abstract
Synthetic acyclic receptors, composed of two arms connected with a spacer enabling molecular recognition, have been intensively explored in host-guest chemistry in the past decades. They fall into the categories of molecular tweezers, clefts and clips, depending on the geometry allowing the recognition of various guests. The advances in synthesis and mechanistic studies have pushed them forward to pharmaceutical applications, such as neurodegenerative disorders, infectious diseases, cancer, cardiovascular disease, diabetes, etc. In this review, we provide a summary of the synthetic molecular tweezers, clefts and clips that have been reported for pharmaceutical applications. Their structures, mechanism of action as well as in vitro and in vivo results are described. Such receptors were found to selectively bind biological guests, namely, nucleic acids, sugars, amino acids and proteins enabling their use as biosensors or therapeutics. Particularly interesting are dynamic molecular tweezers which are capable of controlled motion in response to an external stimulus. They proved their utility as imaging agents or in the design of controlled release systems. Despite some issues, such as stability, cytotoxicity or biocompatibility that still need to be addressed, it is obvious that molecular tweezers, clefts and clips are promising candidates for several incurable diseases as therapeutic agents, diagnostic or delivery tools.
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Affiliation(s)
- Amira Mbarek
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
| | - Ghina Moussa
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
| | - Jeanne Leblond Chain
- Gene Delivery Laboratory, Faculty of pharmacy, Université de Montréal, H3C 3J7, Montréal, Québec, Canada.
- Univ. Bordeaux, ARNA Laboratory, F-33016 Bordeaux, France.
- INSERM U1212, CNRS UMR 5320, ARNA Laboratory, F-33016 Bordeaux, France.
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Benda L, Doistau B, Hasenknopf B, Vives G. Synthesis and Guest Recognition of Switchable Pt-Salphen Based Molecular Tweezers. Molecules 2018; 23:molecules23050990. [PMID: 29695059 PMCID: PMC6102593 DOI: 10.3390/molecules23050990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 01/16/2023] Open
Abstract
Molecular tweezers are artificial receptors that have an open cavity generated by two recognition units pre-organized by a spacer. Switchable molecular tweezers, using a stimuli-responsive spacer, are particularly appealing as prototypes of the molecular machines that combine mechanical motion and allosteric recognition properties. In this present study, the synthesis of switchable molecular tweezers composed of a central terpyridine unit substituted in 4,4″ positions by two Pt(II)-salphen complexes is reported. The terpyridine ligand can be reversibly converted upon Zn(II) coordination from a free ‘U’-shaped closed form to a coordinated ‘W’ open form. This new substitution pattern enables a reverse control of the mechanical motion compared to the previously reported 6,6″ substituted terpyridine-based tweezers. Guest binding studies with aromatic guests showed an intercalation of coronene in the cavity created by the Pt-salphen moieties in the closed conformation. The formation of 1:1 host-guest complex was investigated by a combination of NMR studies and DFT calculations.
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Affiliation(s)
- Lorien Benda
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Benjamin Doistau
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Bernold Hasenknopf
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
| | - Guillaume Vives
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS UMR 8232, 4 Place Jussieu, 75005 Paris, France.
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Wiedbrauk S, Bartelmann T, Thumser S, Mayer P, Dube H. Simultaneous complementary photoswitching of hemithioindigo tweezers for dynamic guest relocalization. Nat Commun 2018; 9:1456. [PMID: 29654233 PMCID: PMC5899155 DOI: 10.1038/s41467-018-03912-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [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: 10/30/2017] [Accepted: 03/21/2018] [Indexed: 11/18/2022] Open
Abstract
Remote control of complex molecular behavior and function is one key problem in modern chemistry. Using light signaling for this purpose has many advantages, however the integration of different photo processes into a wholesome yet complex system is highly challenging. Here we report an alternative approach to increase complexity of light control-simultaneous complementary photoswitching-in which spectral overlap is used as an advantage to drastically reduce the signaling needed for controlling multipart supramolecular assemblies. Two photoswitchable molecular tweezers respond to the same light signals with opposite changes in their binding affinities. In this way the configuration of two host tweezers and ultimately the dynamic relocation of a guest molecule can be trigged by only one signal reversibly in the same solution. This approach should provide a powerful tool for the construction of sophisticated, integrated, and multi-responsive smart molecular systems in any application driven field of chemistry. Controlling complex photoresponsive systems while minimizing light input is highly challenging. Here, the authors report two photoswitchable molecular tweezers responding to the same light signals with opposite changes in their binding affinities towards a guest molecule allowing for its “light-economic” relocation.
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Affiliation(s)
- Sandra Wiedbrauk
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, München, 81377, Germany
| | - Thomas Bartelmann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, München, 81377, Germany
| | - Stefan Thumser
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, München, 81377, Germany
| | - Peter Mayer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, München, 81377, Germany
| | - Henry Dube
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, München, 81377, Germany.
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Abstract
Switching magnetic properties have attracted a wide interest from inorganic chemist for the objectives of information storage and quantum computing at the molecular level. This review is focused on magnetic switches based on a mechanical motion, which is an innovative approach. Three main strategies to control magnetic properties by a mechanical motion have been developed in the literature and will be described. The first one (ligand-induced spin change) consists in modulating the ligand field strength by a configuration change of the ligand in spin-crossover complexes. The second one (coordination-induced spin-state switching) is based on a change in the coordination number of a metallic center that is triggered by the motion of one ligand. The third one uses the modulation of the exchange interaction between two spin-centers by a mechanical motion.
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Gosset A, Xu Z, Maurel F, Chamoreau LM, Nowak S, Vives G, Perruchot C, Heitz V, Jacquot de Rouville HP. A chemically-responsive bis-acridinium receptor. NEW J CHEM 2018. [DOI: 10.1039/c7nj03712k] [Citation(s) in RCA: 8] [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: 12/20/2022]
Abstract
The recognition and the chemical-response properties of a bis-acridinium triphenylene receptor were investigated.
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Affiliation(s)
- A. Gosset
- Univ Paris Diderot
- Sorbonne Paris Cite
- ITODYS
- UMR CNRS 7086
- France
| | - Z. Xu
- Univ Paris Diderot
- Sorbonne Paris Cite
- ITODYS
- UMR CNRS 7086
- France
| | - F. Maurel
- Univ Paris Diderot
- Sorbonne Paris Cite
- ITODYS
- UMR CNRS 7086
- France
| | - L.-M. Chamoreau
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- Paris
| | - S. Nowak
- Univ Paris Diderot
- Sorbonne Paris Cite
- ITODYS
- UMR CNRS 7086
- France
| | - G. Vives
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS
- Institut Parisien de Chimie Moléculaire
- Paris
| | - C. Perruchot
- Univ Paris Diderot
- Sorbonne Paris Cite
- ITODYS
- UMR CNRS 7086
- France
| | - V. Heitz
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels
- Institut de Chimie de Strasbourg
- CNRS/UMR 7177
- France
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18
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Clarke RM, Jeen T, Rigo S, Thompson JR, Kaake LG, Thomas F, Storr T. Exploiting exciton coupling of ligand radical intervalence charge transfer transitions to tune NIR absorption. Chem Sci 2017; 9:1610-1620. [PMID: 29675206 PMCID: PMC5887452 DOI: 10.1039/c7sc04537a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 10/19/2017] [Accepted: 12/18/2017] [Indexed: 12/03/2022] Open
Abstract
We detail the rational design of a series of bimetallic bis-ligand radical Ni salen complexes in which the relative orientation of the ligand radical chromophores provides a mechanism to tune the energy of intense intervalence charge transfer (IVCT) bands in the near infrared (NIR) region.
We detail the rational design of a series of bimetallic bis-ligand radical Ni salen complexes in which the relative orientation of the ligand radical chromophores provides a mechanism to tune the energy of intense intervalence charge transfer (IVCT) bands in the near infrared (NIR) region. Through a suite of experimental (electrochemistry, electron paramagnetic resonance spectroscopy, UV-vis-NIR spectroscopy) and theoretical (density functional theory) techniques, we demonstrate that bimetallic Ni salen complexes form bis-ligand radicals upon two-electron oxidation, whose NIR absorption energies depend on the geometry imposed in the bis-ligand radical complex. Relative to the oxidized monomer [1˙]+ (E = 4500 cm–1, ε = 27 700 M–1 cm–1), oxidation of the cofacially constrained analogue 2 to [2˙˙]2+ results in a blue-shifted NIR band (E = 4830 cm–1, ε = 42 900 M–1 cm–1), while oxidation of 5 to [5˙˙]2+, with parallel arrangement of chromophores, results in a red-shifted NIR band (E = 4150 cm–1, ε = 46 600 M–1 cm–1); the NIR bands exhibit double the intensity in comparison to the monomer. Oxidation of the intermediate orientations results in band splitting for [3˙˙]2+ (E = 4890 and 4200 cm–1; ε = 26 500 and 21 100 M–1 cm–1), and a red-shift for [4˙˙]2+ using ortho- and meta-phenylene linkers, respectively. This study demonstrates for the first time, the applicability of exciton coupling to ligand radical systems absorbing in the NIR region and shows that by simple geometry changes, it is possible to tune the energy of intense low energy absorption by nearly 400 nm.
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Affiliation(s)
- Ryan M Clarke
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Tiffany Jeen
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Serena Rigo
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - John R Thompson
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Loren G Kaake
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Fabrice Thomas
- Départment de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250 , Université Grenoble-Alpes , B.P. 53 , 38041 Grenoble Cedex 9 , France
| | - Tim Storr
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
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19
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Doistau B, Benda L, Cantin JL, Chamoreau LM, Ruiz E, Marvaud V, Hasenknopf B, Vives G. Six States Switching of Redox-Active Molecular Tweezers by Three Orthogonal Stimuli. J Am Chem Soc 2017; 139:9213-9220. [PMID: 28605200 DOI: 10.1021/jacs.7b02945] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A six level molecular switch based on terpyridine(Ni-salphen)2 tweezers and addressable by three orthogonal stimuli (metal coordination, redox reaction, and guest binding) is reported. By a metal coordination stimulus, the tweezers can be mechanically switched from an open "W"-shaped conformation to a closed "U"-shaped form. Theses two states can each be reversibly oxidized by the redox stimulus and bind to a pyrazine guest resulting in four additional states. All six states are stable and accessible by the right combination of stimuli and were studied by NMR, XRD, EPR spectroscopy, and DFT calculations. The combination of the supramolecular concepts of mechanical motion and guest binding with the redox noninnocent and valence tautomerism properties of Ni-salphen complexes added two new dimensions to a mechanical switch.
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Lorien Benda
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Jean-Louis Cantin
- Sorbonne Universités, UPMC Univ Paris 06, INSP , 4 place Jussieu, 75005 Paris, France
| | - Lise-Marie Chamoreau
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona , Diagonal 645, E-08028 Barcelona, Spain
| | - Valérie Marvaud
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Bernold Hasenknopf
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Guillaume Vives
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire , UMR 8232, 4 place Jussieu, 75005 Paris, France
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20
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Affiliation(s)
- Zijian Li
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zongchun Gao
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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21
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Abstract
An off-axis supramolecular rotor was composed of four components: a zinc-porphyrin based stator with four phenanthroline stations and a zinc-salphen based rotator were self-assembled with DABCO and four copper(i) ions to furnish the rotor ROT-2 in quantitative yield.
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Affiliation(s)
- Merve S. Özer
- Center for Micro- and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Anup Rana
- Center for Micro- and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Pronay K. Biswas
- Center for Micro- and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
| | - Michael Schmittel
- Center for Micro- and Nanochemistry and Engineering
- Organische Chemie I
- Universität Siegen
- D-57068 Siegen
- Germany
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22
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Zare D, Doistau B, Nozary H, Besnard C, Guénée L, Suffren Y, Pelé AL, Hauser A, Piguet C. CrIII as an alternative to RuII in metallo-supramolecular chemistry. Dalton Trans 2017; 46:8992-9009. [DOI: 10.1039/c7dt01747b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Semi-labile [Cr(tpy)(CF3SO3)3] precursors can be exploited for building rod-like dinuclear dyads, in which paramagnetic and luminescent trivalent CrIII replace diamagnetic RuII for unravelling intermetallic communication in supramolecular architectures.
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Affiliation(s)
- Davood Zare
- Department of Inorganic and Analytical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Benjamin Doistau
- Department of Inorganic and Analytical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Homayoun Nozary
- Department of Inorganic and Analytical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Céline Besnard
- Laboratory of Crystallography
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Laure Guénée
- Laboratory of Crystallography
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Yan Suffren
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Anne-Laure Pelé
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Andreas Hauser
- Department of Physical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry
- University of Geneva
- CH-1211 Geneva 4
- Switzerland
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23
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Isla H, Srebro-Hooper M, Jean M, Vanthuyne N, Roisnel T, Lunkley JL, Muller G, Gareth Williams JA, Autschbach J, Crassous J. Conformational changes and chiroptical switching of enantiopure bis-helicenic terpyridine upon Zn(2+) binding. Chem Commun (Camb) 2016; 52:5932-5. [PMID: 27054507 PMCID: PMC4840045 DOI: 10.1039/c6cc01748g] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The molecular conformation of a bis-helicenic terpyridine system is strongly modified upon binding to Zn(ii) ion, a process that is accompanied by large changes in the optical and chiroptical properties. This system affords a new type of helicene-based chiroptical switching.
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Affiliation(s)
- Helena Isla
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France
| | - Monika Srebro-Hooper
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-060 Krakow, Poland
| | - Marion Jean
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France
| | - Jamie L. Lunkley
- Department of Chemistry, San José State University, San José, CA 95192-0101, USA
| | - Gilles Muller
- Department of Chemistry, San José State University, San José, CA 95192-0101, USA
| | | | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France
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24
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Doistau B, Rossi-Gendron C, Tron A, McClenaghan ND, Chamoreau LM, Hasenknopf B, Vives G. Switchable platinum-based tweezers with Pt-Pt bonding and selective luminescence quenching. Dalton Trans 2015; 44:8543-51. [PMID: 25567544 DOI: 10.1039/c4dt03230f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Molecular tweezers incorporating peripheral platinum salphen complexes and a central chelating terpyridine group have been synthesized. The terpyridine can be switched upon metal binding between a free 'W' shaped form and a coordinated 'U' form. The crystallographic structure of the zinc-closed molecular tweezers was obtained and presented a strong π-stacking between the Pt-salphen units associated with a Pt-Pt bond. The luminescence properties, notably in response to selected guest ions (Zn(2+), Pb(2+), Hg(2+)) and the resulting mechanical motion, have been investigated by UV-Vis and emission spectroscopy. While ion coordination to the terpy resulted in no significant changes in the luminescence, a selective intercalation of a second Hg(2+) associated with a large differential quenching was observed.
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
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25
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Doistau B, Cantin JL, Chamoreau LM, Marvaud V, Hasenknopf B, Vives G. Mechanical switching of magnetic interaction by tweezers-type complex. Chem Commun (Camb) 2015; 51:12916-9. [DOI: 10.1039/c5cc04980f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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]
Abstract
An original approach using a mechanical motion to control the magnetic interaction between the two spin centers of terpy(Cu–salphen)2 complexes is presented.
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Affiliation(s)
- Benjamin Doistau
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- France
| | | | - Lise-Marie Chamoreau
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- France
| | - Valérie Marvaud
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- France
| | - Bernold Hasenknopf
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- France
| | - Guillaume Vives
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- France
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