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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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2
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Liu E, Cherraben S, Boulo L, Troufflard C, Hasenknopf B, Vives G, Sollogoub M. A molecular information ratchet using a cone-shaped macrocycle. Chem 2023. [DOI: 10.1016/j.chempr.2022.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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3
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Scelle J, Vervoitte H, Bouteiller L, Chamoreau LM, Sollogoub M, Vives G, Hasenknopf B. Size-dependent compression of threaded alkyldiphosphate in head to head cyclodextrin [3]pseudorotaxanes. Chem Sci 2022; 13:2218-2225. [PMID: 35310501 PMCID: PMC8864808 DOI: 10.1039/d1sc05697b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/16/2022] [Indexed: 11/21/2022] Open
Abstract
The encapsulation of guests in a confined space enables unusual conformations and reactivities. In particular, the compression of akyl chains has been obtained by self-assembled molecular capsules but such an effect has not been reported in solution for pseudorotaxane architectures. By exploiting the tendency of cyclodextrin (CD) to form head to head [3]pseudorotaxanes and the hydrogen bonding abilities of phosphate groups, we have studied the effect of the CD dimer cavity on the conformation of threaded α,ω-alkyl-diphosphate axles. The formation of [2]pseudorotaxanes and [3]pseudorotaxanes was investigated by a combination of NMR, ITC and X-ray diffraction techniques. In the solid state, the [3]pseudorotaxane with a C8 axle presents a fully extended conformation with both terminal phosphate groups interacting with hydroxyl groups of the primary rim of CDs. Such hydrogen bonding interactions are also present with the C9 and C10 axles resulting in a compression of the alkyl chain with gauche conformations in the solid state. NMR studies have shown that this effect is maintained in solution resulting in a size-dependent progressive compression of the alkyl chain by the CD [3]pseudorotaxane architecture for C9, C10 and C11 axles. Alkyl chain compression of alkanediphosphate guests was achieved by head-to-head cyclodextrin [3]pseudorotaxanes in a mechanostereoselective self-assembly process.![]()
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Affiliation(s)
- Jérémy Scelle
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire 4 Place Jussieu 75005 Paris France
| | - Hugo Vervoitte
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire 4 Place Jussieu 75005 Paris France
| | - Laurent Bouteiller
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire 4 Place Jussieu 75005 Paris France
| | - Lise-Marie Chamoreau
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire 4 Place Jussieu 75005 Paris France
| | - Matthieu Sollogoub
- 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
| | - Bernold Hasenknopf
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire 4 Place Jussieu 75005 Paris France
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4
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Cherraben S, Scelle J, Hasenknopf B, Vives G, Sollogoub M. Precise Rate Control of Pseudorotaxane Dethreading by pH-Responsive Selectively Functionalized Cyclodextrins. Org Lett 2021; 23:7938-7942. [PMID: 34582212 DOI: 10.1021/acs.orglett.1c02940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A family of cyclodextrins functionalized with zero, one, two, or six amines was shown to control the rate of their threading and dethreading on a molecular axle depending on the pH and their substitution pattern. The originality of this system lies in the rate control of the switch by operating the stimulus directly on the macrocycle.
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Affiliation(s)
- Sawsen Cherraben
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Jérémy Scelle
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Bernold Hasenknopf
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Guillaume Vives
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
| | - Matthieu Sollogoub
- Sorbonne Université, CNRS UMR8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005 Paris, France
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5
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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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6
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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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7
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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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8
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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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9
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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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10
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Riggio S, Hernandéz-Shek MA, Torrijos M, Vives G, Esposito G, van Hullebusch ED, Steyer JP, Escudié R. Comparison of the mesophilic and thermophilic anaerobic digestion of spent cow bedding in leach-bed reactors. Bioresour Technol 2017; 234:466-471. [PMID: 28336219 DOI: 10.1016/j.biortech.2017.02.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/12/2017] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
Anaerobic digestion of spent cow bedding in batch leach-bed reactors (LBRs) was compared in mesophilic and thermophilic conditions for the first time. Results show that the use of thermophilic conditions enhanced only the degradation kinetics of easily-degradable matter during the first days of the digestion, whereas similar methane yields (80% of the Biomethane Potential) were reached after 42days at both temperatures. Therefore, the anaerobic digestion in LBRs of spent cow bedding, a substrate rich in slowly-degradable compounds, was not improved in term of methane production considering the overall digestion time. Moreover, the high initial biogas production rate in thermophilic reactors was found to significantly reduce the energetic performance of the cogeneration unit at industrial scale, leading to a 5.9% decrease in the annual electricity production when compared to a mesophilic one.
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Affiliation(s)
- S Riggio
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France; Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43, 03043 Cassino (FR), Italy; Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 77454 Marne-la-Vallée, France
| | - M A Hernandéz-Shek
- Naskeo Environnement, 52 rue Paul Vaillant Couturier, 92240 Malakoff, France
| | - M Torrijos
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - G Vives
- Naskeo Environnement, 52 rue Paul Vaillant Couturier, 92240 Malakoff, France
| | - G Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43, 03043 Cassino (FR), Italy
| | - E D van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 77454 Marne-la-Vallée, France
| | - J P Steyer
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France
| | - R Escudié
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
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11
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Riggio S, Torrijos M, Vives G, Esposito G, van Hullebusch ED, Steyer JP, Escudié R. Leachate flush strategies for managing volatile fatty acids accumulation in leach-bed reactors. Bioresour Technol 2017; 232:93-102. [PMID: 28214701 DOI: 10.1016/j.biortech.2017.01.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/22/2017] [Accepted: 01/27/2017] [Indexed: 06/06/2023]
Abstract
In anaerobic leach-bed reactors (LBRs) co-digesting an easily- and a slowly-degradable substrate, the importance of the leachate flush both on extracting volatile fatty acids (VFAs) at the beginning of newly-started batches and on their consumption in mature reactors was tested. Regarding VFA extraction three leachate flush-rate conditions were studied: 0.5, 1 and 2Lkg-1TSd-1. Results showed that increasing the leachate flush-rate during the acidification phase is essential to increase degradation kinetics. After this initial phase, leachate injection is less important and the flush-rate could be reduced. The injection in mature reactors of leachate with an acetic acid concentration of 5 or 10gL-1 showed that for an optimized VFA consumption in LBRs, VFAs should be provided straight after the methane production peak in order to profit from a higher methanogenic activity, and every 6-7h to maintain a high biogas production rate.
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Affiliation(s)
- S Riggio
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France; Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43, 03043 Cassino (FR), Italy; Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 77454 Marne-la-Vallée, France.
| | - M Torrijos
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
| | - G Vives
- Naskeo Environnement, 52 rue Paul Vaillant Couturier, 92240 Malakoff, France.
| | - G Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio, 43, 03043 Cassino (FR), Italy.
| | - E D van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPEM, 77454 Marne-la-Vallée, France.
| | - J P Steyer
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
| | - R Escudié
- LBE, INRA, 102 avenue des Etangs, 11100 Narbonne, France.
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12
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Fredy JW, Scelle J, Ramniceanu G, Doan BT, Bonnet CS, Tóth É, Ménand M, Sollogoub M, Vives G, Hasenknopf B. Mechanostereoselective One-Pot Synthesis of Functionalized Head-to-Head Cyclodextrin [3]Rotaxanes and Their Application as Magnetic Resonance Imaging Contrast Agents. Org Lett 2017; 19:1136-1139. [DOI: 10.1021/acs.orglett.7b00153] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jean Wilfried Fredy
- Sorbonne Universités, UPMC Univ Paris 06,
CNRS, Institut Parisien de Chimie Moléculaire UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Jérémy Scelle
- Sorbonne Universités, UPMC Univ Paris 06,
CNRS, Institut Parisien de Chimie Moléculaire UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Gregory Ramniceanu
- Chimie ParisTech, CNRS, UMR8258 INSERM U1022 Unité de Technologies Chimiques et Biologiques pour la Santé, 11 rue Pierre & Marie Curie, 75005 Paris, France
| | - Bich-Thuy Doan
- Chimie ParisTech, CNRS, UMR8258 INSERM U1022 Unité de Technologies Chimiques et Biologiques pour la Santé, 11 rue Pierre & Marie Curie, 75005 Paris, France
| | - Célia S. Bonnet
- Centre
de Biophysique Moléculaire, CNRS UPR4301, Université d’Orléans, Rue Charles Sadron, 45071 Cedex 2 Orléans, France
| | - Éva Tóth
- Centre
de Biophysique Moléculaire, CNRS UPR4301, Université d’Orléans, Rue Charles Sadron, 45071 Cedex 2 Orléans, France
| | - Mickaël Ménand
- Sorbonne Universités, UPMC Univ Paris 06,
CNRS, Institut Parisien de Chimie Moléculaire UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - Matthieu Sollogoub
- 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
| | - Bernold Hasenknopf
- Sorbonne Universités, UPMC Univ Paris 06,
CNRS, Institut Parisien de Chimie Moléculaire UMR 8232, 4 place Jussieu, 75005 Paris, France
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13
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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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14
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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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Doistau B, Tron A, Denisov SA, Jonusauskas G, McClenaghan ND, Gontard G, Marvaud V, Hasenknopf B, Vives G. Terpy(Pt-salphen)2 switchable luminescent molecular tweezers. Chemistry 2014; 20:15799-807. [PMID: 25286882 DOI: 10.1002/chem.201404064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Indexed: 11/10/2022]
Abstract
The design and synthesis of switchable molecular tweezers based on a luminescent terpy(Pt-salphen)2 (1; terpy=terpyridine) complex is reported. Upon metal coordination, the tweezers can switch from an open "W"-shaped conformation to a closed "U"-shaped form that is adapted for selective recognition of cations. Closing of the tweezers by metal coordination (M=Zn(2+), Cu(2+), Pb(2+), Fe(2+), Hg(2+)) was monitored by (1)H NMR and/or UV/Vis titrations. During the titration, exclusive formation of the 1:1 complex [M(1)] was observed, without appearance of an intermediate 1:2 complex [M(1)2]. The crystallographic structure of the 1:1 complex was obtained with Pb(2+) and showed a distorted helical structure. Selective intercalation of Hg(2+) cations by the closed "U" form was observed. The tweezers were reopened by selective metal decoordination of the terpyridine ligand by using tris(2-aminoethyl)amine (tren) as a competitive ligand without modification of the Pt-salphen complex. Detailed photophysical studies were performed on the open and closed tweezers. Structured emission was observed in the open form from the Pt-salphen moieties, with a high quantum yield and a long lifetime. The emission is slightly modified upon closing with 1 equivalent of Zn(2+) or Hg(2+), whereas a dramatic quenching was obtained upon intercalation of additional Hg(2+).
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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), Fax: (+33) 1-44-27-38-41; CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris (France)
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Fredy JW, Scelle J, Guenet A, Morel E, Adam de Beaumais S, Ménand M, Marvaud V, Bonnet CS, Tóth E, Sollogoub M, Vives G, Hasenknopf B. Cyclodextrin Polyrotaxanes as a Highly Modular Platform for the Development of Imaging Agents. Chemistry 2014; 20:10915-20. [DOI: 10.1002/chem.201403635] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Indexed: 12/25/2022]
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Perera UGE, Ample F, Kersell H, Zhang Y, Vives G, Echeverria J, Grisolia M, Rapenne G, Joachim C, Hla SW. Controlled clockwise and anticlockwise rotational switching of a molecular motor. Nat Nanotechnol 2013; 8:46-51. [PMID: 23263725 DOI: 10.1038/nnano.2012.218] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 11/12/2012] [Indexed: 06/01/2023]
Abstract
The design of artificial molecular machines often takes inspiration from macroscopic machines. However, the parallels between the two systems are often only superficial, because most molecular machines are governed by quantum processes. Previously, rotary molecular motors powered by light and chemical energy have been developed. In electrically driven motors, tunnelling electrons from the tip of a scanning tunnelling microscope have been used to drive the rotation of a simple rotor in a single direction and to move a four-wheeled molecule across a surface. Here, we show that a stand-alone molecular motor adsorbed on a gold surface can be made to rotate in a clockwise or anticlockwise direction by selective inelastic electron tunnelling through different subunits of the motor. Our motor is composed of a tripodal stator for vertical positioning, a five-arm rotor for controlled rotations, and a ruthenium atomic ball bearing connecting the static and rotational parts. The directional rotation arises from sawtooth-like rotational potentials, which are solely determined by the internal molecular structure and are independent of the surface adsorption site.
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Affiliation(s)
- U G E Perera
- Nanoscale and Quantum Phenomena Institute, Physics & Astronomy Department, Ohio University, Athens, Ohio 45701, USA
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Batat P, Vives G, Bofinger R, Chang RW, Kauffmann B, Oda R, Jonusauskas G, McClenaghan ND. Dynamics of ion-regulated photoinduced electron transfer in BODIPY-BAPTA conjugates. Photochem Photobiol Sci 2012; 11:1666-74. [DOI: 10.1039/c2pp25130b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Parra S, Ferré R, Vives G, Ribalta J, Marimon F, González M, Castro A. 831 ARTERIAL STIFFNESS IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS IS CORRELATED WITH IMT AND IS DEPENDENT OF TRIGLYCERIDES. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70832-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
The synthesis and ring-opening metathesis polymerization (ROMP) activity of two nanocars functionalized with an olefin metathesis catalyst is reported. The nanocars were attached to a Hoveyda-Grubbs first- or second-generation metathesis catalyst via a benzylidene moiety. The catalytic activity of these nanocars toward ROMP of 1,5-cyclooctadiene was similar to that of their parent catalysts. The activity of the Hoveyda-Grubbs first-generation catalyst-functionalized nanocar was further tested with polymerization of norbornene. Hence, the prospect is heightened for a ROMP process to propel nanocars across a surface by providing the translational force.
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Affiliation(s)
- Jazmin Godoy
- Department of Chemistry, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005, United States
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Vives G, Giansante C, Bofinger R, Raffy G, Guerzo AD, Kauffmann B, Batat P, Jonusauskas G, McClenaghan ND. Facile functionalization of a fully fluorescent perfluorophenyl BODIPY: photostable thiol and amine conjugates. Chem Commun (Camb) 2011; 47:10425-7. [DOI: 10.1039/c1cc13778f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bofinger R, Ducrot A, Jonusauskaite L, McClenaghan ND, Pozzo JL, Sevez G, Vives G. Ion Translocation in Artificial Molecule-based Systems Induced by Light, Electrons, or Chemicals. Aust J Chem 2011. [DOI: 10.1071/ch11177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Synthetic molecules and nanodevices, like their more elaborate biological counterparts, have been shown to perform several sophisticated functions, using even fairly simple molecular architectures. One limitation to developing artificial molecular arrays and networks from these miniscule building blocks is the lack of a unifying strategy whereby they can communicate or interact together, which has been successfully developed in natural systems. Understanding and harnessing these efficient biological processes could prove key in the development of future integrated molecule-based nanodevices and networks. Herein, we give a short overview of some manifestations of intra- and intermolecular communication based on chemical messengers in artificial systems, in some ways analogous to natural systems, which are in turn controlled by light, a redox process or a chemical reaction or interaction. Some advantages, limitations, and challenges are highlighted.
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Bassani DM, Jonusauskaite L, Lavie-Cambot A, McClenaghan ND, Pozzo JL, Ray D, Vives G. Harnessing supramolecular interactions in organic solid-state devices: Current status and future potential. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.05.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Vives G, Guerrero JM, Godoy J, Khatua S, Wang YP, Kiappes JL, Link S, Tour JM. Synthesis of Fluorescent Dye-Tagged Nanomachines for Single-Molecule Fluorescence Spectroscopy. J Org Chem 2010; 75:6631-43. [DOI: 10.1021/jo101468u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guillaume Vives
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Jason M. Guerrero
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Jazmin Godoy
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Saumyakanti Khatua
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Yu-Pu Wang
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - J. L. Kiappes
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Stephan Link
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - James M. Tour
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
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Affiliation(s)
- Jazmin Godoy
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Guillaume Vives
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - James M. Tour
- Department of Chemistry, Department of Mechanical Engineering and Materials Science, Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
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Affiliation(s)
- Guillaume Vives
- Departments of Chemistry and Mechanical Engineering and Materials Science, The R. E. Smalley Institute for Nanoscale Science and Technology, and Department of Electrical and Computer Engineering, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - JungHo Kang
- Departments of Chemistry and Mechanical Engineering and Materials Science, The R. E. Smalley Institute for Nanoscale Science and Technology, and Department of Electrical and Computer Engineering, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - Kevin F. Kelly
- Departments of Chemistry and Mechanical Engineering and Materials Science, The R. E. Smalley Institute for Nanoscale Science and Technology, and Department of Electrical and Computer Engineering, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
| | - James M. Tour
- Departments of Chemistry and Mechanical Engineering and Materials Science, The R. E. Smalley Institute for Nanoscale Science and Technology, and Department of Electrical and Computer Engineering, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005
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Shirai Y, Guerrero JM, Sasaki T, He T, Ding H, Vives G, Yu BC, Cheng L, Flatt AK, Taylor PG, Gao Y, Tour JM. Fullerene/Thiol-Terminated Molecules. J Org Chem 2009; 74:7885-97. [DOI: 10.1021/jo901701j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasuhiro Shirai
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
- ICYS-MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Jason M. Guerrero
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Takashi Sasaki
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Tao He
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Huanjun Ding
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627
| | - Guillaume Vives
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Byung-Chan Yu
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
- Department of Chemistry, Mokwon University, Daejon, 302-729, Republic of Korea
| | - Long Cheng
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Austen K. Flatt
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Priscilla G. Taylor
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - Yongli Gao
- Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627
| | - James M. Tour
- Department of Chemistry, Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
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Gonzàlez M, Ribalta J, Vives G, Iftimie S, Ferré R, Plana N, Guardiola M, Dallinga-Thie G, Masana L, Castro A. Abstract: P924 NMR LIPOPROTEIN SUBCLASSES AND THE APOE GENOTYPE INFLUENCE CAROTID ATHEROSCLEROSIS IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71045-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
The drive to miniaturize devices has led to a variety of molecular machines inspired by macroscopic counterparts such as molecular motors, switches, shuttles, turnstiles, barrows, elevators, and nanovehicles. Such nanomachines are designed for controlled mechanical motion and the transport of nanocargo. As researchers miniaturize devices, they can consider two complementary approaches: (1) the "top-down" approach, which reduces the size of macroscopic objects to reach an equivalent microscopic entity using photolithography and related techniques and (2) the "bottom-up" approach, which builds functional microscopic or nanoscopic entities from molecular building blocks. The top-down approach, extensively used by the semiconductor industry, is nearing its scaling limits. On the other hand, the bottom-up approach takes advantage of the self-assembly of smaller molecules into larger networks by exploiting typically weak molecular interactions. But self-assembly alone will not permit complex assembly. Using nanomachines, we hope to eventually consider complex, enzyme-like directed assembly. With that ultimate goal, we are currently exploring the control of nanomachines that would provide a basis for the future bottom-up construction of complex systems. This Account describes the synthesis of a class of molecular machines that resemble macroscopic vehicles. We designed these so-called nanocars for study at the single-molecule level by scanning probe microscopy (SPM). The vehicles have a chassis connected to wheel-terminated axles and convert energy inputs such as heat, electric fields, or light into controlled motion on a surface, ultimately leading to transport of nanocargo. At first, we used C(60) fullerenes as wheels, which allowed the demonstration of a directional rolling mechanism of a nanocar on a gold surface by STM. However, because of the low solubility of the fullerene nanocars and the incompatibility of fullerenes with photochemical processes, we developed new p-carborane- and ruthenium-based wheels with greater solubility in organic solvents. Although fullerene wheels must be attached in the final synthetic step, p-carborane- and ruthenium-based wheels do not inhibit organometallic coupling reactions, which allows a more convergent synthesis of molecular machines. We also prepared functional nanotrucks for the transport of atoms and molecules, as well as self-assembling nanocars and nanotrains. Although engineering challenges such as movement over long distance and non-atomically flat surfaces remain, the greatest current research challenge is imaging. The detailed study of nanocars requires complementary single molecule imaging techniques such as STM, AFM, TEM, or single-molecule fluorescence microscopy. Further developments in engineering and synthesis could lead to enzyme-like manipulation and assembly of atoms and small molecules in nonbiological environments.
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Affiliation(s)
- Guillaume Vives
- Departments of Chemistry and Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
| | - James M. Tour
- Departments of Chemistry and Mechanical Engineering and Materials Science, The Smalley Institute for Nanoscale Science and Technology, Rice University, MS-222, 6100 Main Street, Houston, Texas 77005
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Khatua S, Guerrero JM, Claytor K, Vives G, Kolomeisky AB, Tour JM, Link S. Micrometer-scale translation and monitoring of individual nanocars on glass. ACS Nano 2009; 3:351-6. [PMID: 19236071 DOI: 10.1021/nn800798a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nanomachines designed to exhibit controlled mechanical motions on the molecular scale present new possibilities of building novel functional materials. Single molecule fluorescence imaging of dye-labeled nanocars on a glass surface at room temperature showed a coupled translational and rotational motion of these nanoscale machines with an activation energy of 42 +/- 5 kJ/mol. The 3 nm-long dye-labeled carborane-wheeled nanocars moved by as much as 2.5 mum with an average speed of 4.1 nm/s. Translation of the nanocars due a wheel-like rolling mechanism is proposed and this is consistent with the absence of movement for a three-wheeled nanocar analogue and the stationary behavior of unbound dye molecules. These findings are an important first step toward the rational design and ultimate control of surface-operational molecular machines.
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Affiliation(s)
- Saumyakanti Khatua
- Department of Chemistry and the Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA
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Vives G, de Rouville HPJ, Carella A, Launay JP, Rapenne G. Prototypes of molecular motors based on star-shaped organometallic ruthenium complexes. Chem Soc Rev 2009; 38:1551-61. [DOI: 10.1039/b804684k] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de Rouville HPJ, Vives G, Tur E, Crassous J, Rapenne G. Synthesis and analytical resolution of chiral pyrazoles derived from (5R)-dihydrocarvone. NEW J CHEM 2009. [DOI: 10.1039/b812123k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vives G, Carella A, Launay JP, Rapenne G. The chemistry of 1,2,3,4,5-pentaphenylcyclopentadienyl hydrotris(indazolyl)borate ruthenium(II) complexes, building blocks for the construction of potential organometallic molecular motors. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2007.09.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vives G, Gonzalez A, Jaud J, Launay JP, Rapenne G. Synthesis of Molecular Motors Incorporatingpara-Phenylene-Conjugated or Bicyclo[2.2.2]octane-Insulated Electroactive Groups. Chemistry 2007; 13:5622-31. [PMID: 17429822 DOI: 10.1002/chem.200700223] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The insulating role of the bicyclo[2.2.2]octane fragment has been theoretically evaluated by comparing the electronic coupling parameter (V(ab)) in 1,4-bis(ferrocenyl)benzene (1) and 1,4-bis(ferrocenyl)bicyclo[2.2.2]octane (2). The geometries were optimized by DFT and an extended Hückel calculation was performed to evaluate V(ab) by the dimer splitting method. The calculations showed a 12-fold decrease of the electronic coupling from 60 meV for 1 to 5 meV for 2. The second part describes the synthesis of two potential molecular motors with one incorporating the insulating bicyclo[2.2.2]octane fragment. These molecules are based on a ruthenium complex bearing a tripodal stator functionalized to be anchored onto surfaces. The ferrocenyl electroactive groups and the cyclopentadienyl (Cp) rotor are connected through a p-phenylene spacer (5) or through a spacer incorporating an insulating bicyclo[2.2.2]octane moiety (6).
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Affiliation(s)
- Guillaume Vives
- NanoSciences Group, CEMES-CNRS, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse Cedex 4, France
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Abstract
Technomimetic molecules are molecules designed to imitate macroscopic objects at the molecular level, also transposing the motions that these objects are able to undergo. This article focuses on technomimetic molecules with motions triggered by electrons. The first part is devoted to our work in the field of molecular switches: after having demonstrated the possibility of controlling an intramolecular electron transfer by photoisomerisation, we are now trying to control the isomerisation, either by electrochemistry, or by embedding the photochromic compound in a self-assembled monolayer and testing the electrical conduction with a STM tip. In a second part, we present our strategy on controlling the rotation in a molecular rotary motor and the family of ruthenium complexes designed to perform such a task. The molecules have a piano-stool structure with a "stator" meant to be grafted on an oxide surface, and a "rotor" bearing redox-active groups, so that addressing the molecule with nano-electrodes would trigger rotation. The electrical control of the charge state of a molecule by a STM tip is developed in a final part.
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Affiliation(s)
- Alexandre Carella
- NanoSciences Group, CEMES-CNRS, 29 rue Jeanne Marvig, BP 94347, F-31055, Toulouse Cedex 4, France
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Carella A, Vives G, Cox T, Jaud J, Rapenne G, Launay J. Synthesis of New Tripodal Tri‐Functionalized Hydrotris(indazol‐1‐yl)borate Ligands and X‐ray Structures of Their Cyclopentadieneruthenium Complexes. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500851] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alexandre Carella
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
| | - Guillaume Vives
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
| | - Tara Cox
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
| | - Joël Jaud
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
| | - Gwénaël Rapenne
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
| | - Jean‐Pierre Launay
- NanoSciences Group, CEMES‐CNRS, 29 rue Jeanne Marvig, BP 94347, 31055 Toulouse Cedex 4, France, Fax: +33‐5‐62257999
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Vives G, Carella A, Launay JP, Rapenne G. A star-shaped ruthenium complex with five ferrocenyl-terminated arms bridged by trans-platinum fragments. Chem Commun (Camb) 2006:2283-5. [PMID: 16718330 DOI: 10.1039/b603508f] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the synthesis of the new heteropolytopic penta(4-ethynylphenyl)cyclopentadiene ligand, its complexation through the Cp ring to ruthenium tris(indazolyl)borate and through the terminal alkyne groups to five ferrocenyl ethynyl platinum units, yielding an undecanuclear heterotrimetallic complex.
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Affiliation(s)
- Guillaume Vives
- NanoSciences Group, Centre d'Elaboration de Matériaux et d'Etudes Structurales-CNRS, 29 rue Jeanne Marvig, BP 94347, F-31055, Toulouse Cedex 4, France
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Vives G, Carella A, Sistach S, Launay JP, Rapenne G. Synthesis of triester-functionalized molecular motors incorporating bis-acetylide trans-platinum insulating fragments. NEW J CHEM 2006. [DOI: 10.1039/b605509e] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Although AIDS is spreading rapidly in minority communities, little is known about attitudes, knowledge, and behavior related to AIDS and HIV in the Asian community. The purpose of this study was to examine these variables in a sample of gay Asian males, as well as to investigate the relationship between knowledge, sources of information, culturally influenced attitudes and high-risk behaviors in this population. Results from a sample of 60 young Asian men who self-identified as "having sex with other men" indicated they were generally knowledgeable about methods of transmission and prevention, and appeared linked to a large information network that included informal sources such as peers and formal sources. However, significant percentages held culturally biased views of AIDS, such as believing race of partner or one's own gender role in the sexual encounter determined level of risk; and one third of the sample did not use condoms regularly. Having been tested for HIV was associated with holding less traditional cultural beliefs and a higher sexual activity level. Open communication about safer sexual practices was associated with monogamous as opposed to multiple relationships and with decreased tendency to engage in alcohol-related unprotected sex. Variance in overall risk was predicted by demographic variables such as education, age, and level of sexual activity, rather than by the attitudinal factors measured. Limitations of this exploratory study include a time-limited subject recruitment period and consequent small sample size, a homogeneous sample weighted toward young, well-educated, and middle-class respondents, and the exclusion of non-English speaking individuals. Nevertheless, study findings suggest that educational outreach targeting Asians who have sex with other men needs to address inaccurate cultural beliefs about HIV/AIDS, emphasize consistent condom use, and encourage models of open communication with partners about safer sexual practices.
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Affiliation(s)
- J Shapiro
- University of California, Irvine College of Medicine, USA.
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Meo T, Vives G, Rijnbeek AM, Miggiano VC, Nabholz M, Shreffler DC. A bipartite interpretation and tentative mapping of H-2-associated MLR determinants in the mouse. Transplant Proc 1973; 5:1339-50. [PMID: 4130053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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