1
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Gao R, Beladi-Mousavi M, Salinas G, Zhang L, Kuhn A. Synthesis of Multi-Functional Graphene Monolayers via Bipolar Electrochemistry. Chemphyschem 2024:e202400257. [PMID: 38757220 DOI: 10.1002/cphc.202400257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/16/2024] [Accepted: 05/16/2024] [Indexed: 05/18/2024]
Abstract
Graphene has gained substantial research interest in many fields due to its remarkable properties among many other two-dimensional materials. In this study, we propose a wireless electrochemical approach, bipolar electrochemistry, for the precise modification of single layers of graphene at predefined locations, such as distinct edges or corners, with a variety of metals or polymers, thus enabling the elaboration of multi-functional monolayer graphene sheets. We illustrate the concept e.g. by depositing multiple metals, or platinum and a catalyst-containing porous polymer on the same graphene sheet, but at separate corners. This configuration allows activating chemiluminescence on the polymer spot, and simultaneously generates the driving force for autonomous motion on the Pt side through the catalytic decomposition of hydrogen peroxide into oxygen bubbles. This integration of different chemical features on the same object, exemplified by these proof-of-principle experiments, enhances the functionality of two-dimensional materials, paving the way for the use of these hybrid materials for a variety of applications, ranging from sensing and catalysis to targeted delivery.
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Affiliation(s)
- Ruchao Gao
- University of Bordeaux, Institut of Molecular Science, FRANCE
| | | | - Gerardo Salinas
- University of Bordeaux, Institut of Molecular Science, FRANCE
| | - Lin Zhang
- Henan University, Engineering Research Center for Nanomaterials, CHINA
| | - Alexander Kuhn
- University of Bordeaux, Institute of Molecular Science, 16 avenue Pey Berland, 33607, Pessac, FRANCE
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2
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Malacarne F, Grecchi S, Niamlaem M, Bonczak B, Salinas G, Arnaboldi S. Unconventional approaches for chiral resolution. Anal Bioanal Chem 2024:10.1007/s00216-024-05329-2. [PMID: 38755462 DOI: 10.1007/s00216-024-05329-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/26/2024] [Accepted: 05/06/2024] [Indexed: 05/18/2024]
Abstract
Chirality is a fundamental and ubiquitous property of nature involved in multiple fields of science. In particular, the possible resolution of the enantiomeric forms of a molecule is crucial in the pharmaceutical, food, and agrochemical industries. The search for efficient, broad-spectrum, and yet simple methods for obtaining enantiomerically pure substances is a current challenge. Enantioselective resolution methods rely on an asymmetric environment that allows the two antipodes of a chiral molecule to be distinguished. In addition to enantiomeric separation techniques, such as chromatography and electrophoresis, new promising approaches involving out-of-the-scheme synergistic effects between chiral selectors (CS) and external stimuli are emerging. This Trends article discusses different enantioselective mechanisms triggered by unconventional physicochemical stimuli for the design of avant-garde approaches that could offer novel perspectives in the field of chiral resolution.
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Affiliation(s)
| | - Sara Grecchi
- Dip. Di Chimica, Università degli Studi di Milano, Milan, Italy
| | | | | | - Gerardo Salinas
- Université de Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
| | - Serena Arnaboldi
- Dip. Di Chimica, Università degli Studi di Milano, Milan, Italy.
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3
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Liu M, Arias-Aranda LR, Li H, Bouffier L, Kuhn A, Sojic N, Salinas G. Wireless multimodal light-emitting arrays operating on the principles of LEDs and ECL. Chemphyschem 2024:e202400133. [PMID: 38624189 DOI: 10.1002/cphc.202400133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/17/2024]
Abstract
Electrochemistry-based light-emitting devices have gained considerable attention in different applications such as sensing and optical imaging. In particular, such systems are an interesting alternative for the development of multimodal light-emitting platforms. Herein we designed a multicolor light-emitting array, based on the electrochemical switch-on of light-emitting diodes (LEDs) with a different intrinsic threshold voltage. Thermodynamically and kinetically favored coupled redox reactions, i.e. the oxidation of Mg and the reduction of protons on Pt, act as driving force to power the diodes. Moreover, this system enables to trigger an additional light emission based on the interfacial reductive-oxidative electrochemiluminescence (ECL) mechanism of the Ru(bpy)32+/S2O82- system. The synergy between these light-emission pathways offers a multimodal platform for the straightforward optical readout of physico-chemical information based on composition changes of the solution.
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Affiliation(s)
| | | | - Haidong Li
- Yangzhou University College of Chemistry and Chemical Engineering, college of chemistry and chemical engineering, CHINA
| | | | | | | | - Gerardo Salinas
- Bordeaux INP ENSCBP, University of Bordeaux, ENSCBP, Bordeaux INP, F-33607, 33607, Pessac, FRANCE
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4
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Boukarkour Y, Reculusa S, Sojic N, Kuhn A, Salinas G. Wireless Light-Emitting Electrode Arrays for the Evaluation of Electrocatalytic Activity. Chemistry 2024:e202400078. [PMID: 38470292 DOI: 10.1002/chem.202400078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/13/2024]
Abstract
Water splitting has become a sustainable and clean alternative for hydrogen production. Commonly, the efficiency of such reactions is intimately related to the physico-chemical properties of the catalysts that constitute the electrolyzer. Thus, the development of simple and fast methods to evaluate the electrocatalytic efficiency of an electrolyzer is highly required. In this work, we present an unconventional method based on the combination of bipolar electrochemistry and light-emitting diodes, which allows the evaluation of the electrocatalytic performance of the two types of catalysts, composing an electrolyzer, namely for oxygen and hydrogen evolution reactions, respectively. The integrated light emission of the diode acts as an optical readout of the electrocatalytic information, which simultaneously depends on the composition of the anode and the cathode. The electrocatalytic activity of Au, Pt, and Ni electrodes, connected to the LED in multiple anode/cathode configurations, towards the water splitting reactions has been evaluated. The efficiency of the electrolyzer can be represented in terms of the onset electric field (ϵonset) for light emission, obtaining variations that are in agreement with data reported with conventional electrochemistry. This work introduces a straightforward method for evaluating electrocatalysts and underscores the importance of material characterization in developing efficient electrolyzers for hydrogen production.
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Affiliation(s)
| | - Stephane Reculusa
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607, Pessac, France
| | - Neso Sojic
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607, Pessac, France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607, Pessac, France
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607, Pessac, France
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5
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Tieriekhov K, Sojic N, Bouffier L, Salinas G, Kuhn A. Wireless Magnetoelectrochemical Induction of Rotational Motion. Adv Sci (Weinh) 2024; 11:e2306635. [PMID: 38126582 PMCID: PMC10916613 DOI: 10.1002/advs.202306635] [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] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Electromagnetically induced rotation is a key process of many technological systems that are used in daily life, especially for energy conversion. In this context, the Lorentz force-induced deviation of charges is a crucial physical phenomenon to generate rotation. Herein, they combine the latter with the concept of bipolar electrochemistry to design a wireless magnetoelectrochemical rotor. Such a device can be considered as a wet analog of a conventional electric motor. The main driving force that propels this actuator is the result of the synergy between the charge-compensating ion flux along a bipolar electrode and an external magnetic field applied orthogonally to the surface of the object. The trajectory of the wirelessly polarized rotor can be controlled by the orientation of the magnetic field relative to the direction of the global electric field, producing a predictable clockwise or anticlockwise motion. Fine-tuning of the applied electric field allows for addressing conducting objects having variable characteristic lengths.
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Affiliation(s)
| | - Neso Sojic
- University of BordeauxCNRSBordeaux INPISM, UMR 5255Talence33400France
| | - Laurent Bouffier
- University of BordeauxCNRSBordeaux INPISM, UMR 5255Talence33400France
| | - Gerardo Salinas
- University of BordeauxCNRSBordeaux INPISM, UMR 5255Talence33400France
| | - Alexander Kuhn
- University of BordeauxCNRSBordeaux INPISM, UMR 5255Talence33400France
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6
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Salinas G, Arnaboldi S, Garrigue P, Bonetti G, Cirilli R, Benincori T, Kuhn A. Magnetic field-enhanced redox chemistry on-the-fly for enantioselective synthesis. Faraday Discuss 2023; 247:34-44. [PMID: 37470179 DOI: 10.1039/d3fd00041a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Chemistry on-the-fly is an interesting concept, extensively studied in recent years due to its potential use for recognition, quantification and conversion of chemical species in solution. In this context, chemistry on-the-fly for asymmetric synthesis is a promising field of investigation, since it can help to overcome mass transport limitations, present for example in conventional organic electrosynthesis. Herein, the synergy between a magnetic field-enhanced self-electrophoretic propulsion mechanism and enantioselective redox chemistry on-the-fly is proposed as an efficient method to boost stereoselective conversion. We employ Janus swimmers as redox-active elements, exhibiting a well-controlled clockwise or anticlockwise motion with a speed that can be increased by one order of magnitude in the presence of an external magnetic field. While moving, these bifunctional objects convert spontaneously on-the-fly a prochiral molecule into a specific enantiomer with high enantiomeric excess. The magnetic field-enhanced self-mixing of the swimmers, based on the formation of local magnetohydrodynamic vortices, leads to a significant improvement of the reaction yield and the conversion rate.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607 Pessac, France.
| | - Serena Arnaboldi
- Dip. Di Chimica, Univ. degli Studi di Milano, 20133 Milan, Italy
| | - Patrick Garrigue
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607 Pessac, France.
| | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, 22100 Como, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, 00161 Rome, Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, 22100 Como, Italy
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, 33607 Pessac, France.
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7
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Arnaboldi S, Salinas G, Bichon S, Gounel S, Mano N, Kuhn A. Bi-enzymatic chemo-mechanical feedback loop for continuous self-sustained actuation of conducting polymers. Nat Commun 2023; 14:6390. [PMID: 37828004 PMCID: PMC10570360 DOI: 10.1038/s41467-023-42153-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023] Open
Abstract
Artificial actuators have been extensively studied due to their wide range of applications from soft robotics to biomedicine. Herein we introduce an autonomous bi-enzymatic system where reversible motion is triggered by the spontaneous oxidation and reduction of glucose and oxygen, respectively. This chemo-mechanical actuation is completely autonomous and does not require any external trigger to induce self-sustained motion. The device takes advantage of the asymmetric uptake and release of ions on the anisotropic surface of a conducting polymer strip, occurring during the operation of the enzymes glucose oxidase and bilirubin oxidase immobilized on its surface. Both enzymes are connected via a redox polymer at each extremity of the strip, but at the opposite faces of the polymer film. The time-asymmetric consumption of both fuels by the enzymatic reactions produces a double break of symmetry of the film, leading to autonomous actuation. An additional break of symmetry, introduced by the irreversible overoxidation of one extremity of the polymer film, leads to a crawling-type motion of the free-standing polymer film. These reactions occur in a virtually unlimited continuous loop, causing long-term autonomous actuation of the device.
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Affiliation(s)
| | - Gerardo Salinas
- University Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607, Pessac, France
| | - Sabrina Bichon
- Centre de Recherche Paul Pascal, University Bordeaux, CNRS, UMR 5031, Pessac, France
| | - Sebastien Gounel
- Centre de Recherche Paul Pascal, University Bordeaux, CNRS, UMR 5031, Pessac, France
| | - Nicolas Mano
- Centre de Recherche Paul Pascal, University Bordeaux, CNRS, UMR 5031, Pessac, France
| | - Alexander Kuhn
- University Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607, Pessac, France.
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8
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Liu M, Salinas G, Yu J, Cornet A, Li H, Kuhn A, Sojic N. Endogenous and exogenous wireless multimodal light-emitting chemical devices. Chem Sci 2023; 14:10664-10670. [PMID: 37829015 PMCID: PMC10566513 DOI: 10.1039/d3sc03678b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/18/2023] [Accepted: 09/04/2023] [Indexed: 10/14/2023] Open
Abstract
Multimodal imaging is a powerful and versatile approach that integrates and correlates multiple optical modalities within a single device. This concept has gained considerable attention due to its potential applications ranging from sensing to medicine. Herein, we develop several wireless multimodal light-emitting chemical systems by coupling two light sources based on different physical principles: electrochemiluminescence (ECL) occurring at the electrode interface and a light-emitting diode (LED) switched on by an electrochemically triggered electron flow. Endogenous (thermodynamically spontaneous redox process) and exogenous (requiring an external power source) bipolar electrochemistry acts as a driving force to trigger both light emissions at different wavelengths. The results presented here interconnect optical imaging and electrochemical reactions, providing a novel and so far unexplored alternative to design autonomous hybrid systems with multimodal and multicolor optical readouts for complex bio-chemical systems.
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Affiliation(s)
- Miaoxia Liu
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
| | - Gerardo Salinas
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
| | - Jing Yu
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
| | - Antoine Cornet
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
| | - Haidong Li
- College of Chemistry and Chemical Engineering, Yangzhou University 225002 Yangzhou China
| | - Alexander Kuhn
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
| | - Neso Sojic
- Univ. Bordeaux, Bordeaux INP, ISM, UMR 5255 CNRS, Site ENSMAC 33607 Pessac France
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9
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Gao R, Beladi-Mousavi SM, Salinas G, Garrigue P, Zhang L, Kuhn A. Spatial Precision Tailoring the Catalytic Activity of Graphene Monolayers for Designing Janus Swimmers. Nano Lett 2023; 23:8180-8185. [PMID: 37642420 DOI: 10.1021/acs.nanolett.3c02314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Graphene monolayers have interesting applications in many fields due to their intrinsic physicochemical properties, especially when they can be postmodified with high precision. Herein, we describe the highly site-selective functionalization of freestanding graphene monolayers with platinum (Pt) clusters by bipolar electrochemistry. The deposition of such metal spots leads to catalytically active hybrid two-dimensional (2D) nanomaterials. Their catalytic functionality is illustrated by the spatially controlled decomposition of hydrogen peroxide, inducing motion at the water/air interface due to oxygen bubble evolution. A series of such 2D Janus structures with Pt deposition at predefined positions (corners and edges) is studied with respect to the generation of autonomous motion. The type and speed of motion can be fine-tuned by controlling the deposition time and location of the Pt clusters. These proof-of-principle experiments indicate that this type of hybrid 2D object opens up interesting perspectives in terms of applications, such as environmental detection or remediation.
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Affiliation(s)
- Ruchao Gao
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | | | - Gerardo Salinas
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | - Patrick Garrigue
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
| | - Lin Zhang
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
| | - Alexander Kuhn
- Engineering Research Center for Nanomaterials, Henan University, 475000 Kaifeng, China
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607 Pessac, France
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10
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Salinas G, Kuhn A, Arnaboldi S. Self-Sustained Rotation of Lorentz Force-Driven Janus Systems. J Phys Chem C Nanomater Interfaces 2023; 127:14704-14710. [PMID: 37554549 PMCID: PMC10405271 DOI: 10.1021/acs.jpcc.3c01597] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/12/2023] [Indexed: 08/10/2023]
Abstract
Rotation is an interesting type of motion that is currently involved in many technological applications. In this frame, different and sophisticated external stimuli to induce rotation have been developed. In this work, we have designed a simple and original self-propelled bimetallic Janus rotor powered by the synergy between a spontaneous electric and ionic current, produced by two coupled redox reactions, and a magnetic field, placed orthogonal to the surface of the device. Such a combination induces a magnetohydrodynamic vortex at each extremity of the rotor arm, which generates an overall driving force able to propel the rotor. Furthermore, the motion of the self-polarized object can be controlled by the direction of the spontaneous electric current or the orientation of the external magnetic field, resulting in a predictable clockwise or anticlockwise motion. In addition, these devices exhibit directional corkscrew-type displacement, when representing their displacement as a function of time, producing time-space specular behavior. The concept can be used to design alternative self-mixing systems for a variety of (micro)fluidic equipment.
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Affiliation(s)
- Gerardo Salinas
- Université
Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607 Pessac, France
| | - Alexander Kuhn
- Université
Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607 Pessac, France
| | - Serena Arnaboldi
- Dipartimento
di Chimica, Universita degli Studi di Milano, 20133 Milano, Italy
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11
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Nulek T, Arnaboldi S, Salinas G, Bonetti G, Cirilli R, Benincori T, Wattanakit C, Flood AE, Kuhn A. Enantioselective resolution of two model amino acids using inherently chiral oligomer films with uncorrelated molecular structures. Chem Commun (Camb) 2023. [PMID: 37483076 DOI: 10.1039/d3cc02258g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Preferential crystallization induced by chiral surfaces is an interesting alternative to isolate enantiopure antipodes. Herein, we take advantage of the outstanding enantiorecognition capabilities of inherently chiral oligomers to induce an enantioselective crystallization process. We exemplify this strategy with two amino acid model molecules, asparagine and glutamic acid, having a completely uncorrelated structure with respect to the template. This illustrates the versatility of the approach with potential applications in the resolution of pharmaceutical compounds.
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Affiliation(s)
- Thitapond Nulek
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1, Payupnai, Wang Chan, Rayong 21210, Thailand.
| | | | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Pessac, France.
| | - Giorgia Bonetti
- Univ.degli Studi dell'Insubria, Dip. di Scienza e Alta Tecnologia, Via Valleggio 11, Como 22100, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Rome, Italy
| | - Tiziana Benincori
- Univ.degli Studi dell'Insubria, Dip. di Scienza e Alta Tecnologia, Via Valleggio 11, Como 22100, Italy
| | - Chularat Wattanakit
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1, Payupnai, Wang Chan, Rayong 21210, Thailand.
| | - Adrian E Flood
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1, Payupnai, Wang Chan, Rayong 21210, Thailand.
| | - Alexander Kuhn
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 555 Moo 1, Payupnai, Wang Chan, Rayong 21210, Thailand.
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Pessac, France.
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12
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Salinas G, Malacarne F, Bonetti G, Cirilli R, Benincori T, Arnaboldi S, Kuhn A. Wireless electromechanical enantio-responsive valves. Chirality 2023; 35:110-117. [PMID: 36513396 DOI: 10.1002/chir.23521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 12/15/2022]
Abstract
Microfluidic valves based on chemically responsive materials have gained considerable attention in recent years. Herein, a wireless enantio-responsive valve triggered by bipolar electrochemistry combined with chiral recognition is reported. A conducting polymer actuator functionalized with the enantiomers of an inherently chiral oligomer was used as bipolar valve to cover a tube loaded with a dye and immersed in a solution containing chiral analytes. When an electric field is applied, the designed actuator shows a reversible cantilever-type deflection, allowing the release of the dye from the reservoir. The tube can be opened and closed by simply switching the polarity of the system. Qualitative results show the successful release of the colorant, driven by chirality and redox reactions occurring at the bipolar valve. The device works well even in the presence of chemically different chiral analytes in the same solution. These systems open up new possibilities in the field of microfluidics, including also controlled drug delivery applications.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Pessac, France
| | | | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Rome, Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | | | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Pessac, France
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13
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Salinas G, Malacarne F, Bonetti G, Cirilli R, Benincori T, Arnaboldi S, Kuhn A. Cover Image, Volume 35, Issue 2. Chirality 2023. [DOI: 10.1002/chir.23533] [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: 01/19/2023]
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14
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Beladi-Mousavi SM, Salinas G, Bouffier L, Sojic N, Kuhn A. Wireless electrochemical light emission in ultrathin 2D nanoconfinements. Chem Sci 2022; 13:14277-14284. [PMID: 36545138 PMCID: PMC9749134 DOI: 10.1039/d2sc04670a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/20/2022] [Indexed: 11/22/2022] Open
Abstract
Spatial confinement of chemical reactions or physical effects may lead to original phenomena and new properties. Here, the generation of electrochemiluminescence (ECL) in confined free-standing 2D spaces, exemplified by surfactant-based air bubbles is reported. For this, the ultrathin walls of the bubbles (typically in the range of 100-700 nm) are chosen as a host where graphene sheets, acting as bipolar ECL-emitting electrodes, are trapped and dispersed. The proposed system demonstrates that the required potential for the generation of ECL is up to three orders of magnitude smaller compared to conventional systems, due to the nanoconfinement of the potential drop. This proof-of-concept study demonstrates the key advantages of a 2D environment, allowing a wireless activation of ECL at rather low potentials, compatible with (bio)analytical systems.
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Affiliation(s)
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP33607 PessacFrance
| | - Laurent Bouffier
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP33607 PessacFrance
| | - Neso Sojic
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP33607 PessacFrance
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP33607 PessacFrance
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15
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Salinas G, Villegas-Barron AA, Tadeo-Leon J, Frontana-Uribe BA. Electrochemical polymerization, characterization and spectroelectrochemical studies of a N-substituted-2,5-dithienil-pyrrole bearing an aniline moiety for cross-linking (TPTBA). Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141673] [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: 12/05/2022]
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16
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Arnaboldi S, Salinas G, Bonetti G, Garrigue P, Cirilli R, Benincori T, Kuhn A. Autonomous Chiral Microswimmers with Self‐mixing Capabilities for Highly Efficient Enantioselective Synthesis. Angew Chem Int Ed Engl 2022; 61:e202209098. [DOI: 10.1002/anie.202209098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Serena Arnaboldi
- Univ. Bordeaux CNRS, Bordeaux INP, ISM UMR 5255 33607 Pessac France
- Dip. Di Chimica Univ. degli Studi di Milano 20133 Milan Italy
| | - Gerardo Salinas
- Univ. Bordeaux CNRS, Bordeaux INP, ISM UMR 5255 33607 Pessac France
| | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia Univ. degli Studi dell'Insubria 22100 Como Italy
| | - Patrick Garrigue
- Univ. Bordeaux CNRS, Bordeaux INP, ISM UMR 5255 33607 Pessac France
| | - Roberto Cirilli
- Istituto Superiore di Sanità Centro Nazionale per il Controllo e la Valutazione dei Farmaci 00161 Rome Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia Univ. degli Studi dell'Insubria 22100 Como Italy
| | - Alexander Kuhn
- Univ. Bordeaux CNRS, Bordeaux INP, ISM UMR 5255 33607 Pessac France
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17
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Salinas G, Beladi-Mousavi SM, Gerasimova L, Bouffier L, Kuhn A. Wireless Imaging of Transient Redox Activity Based on Bipolar Light-Emitting Electrode Arrays. Anal Chem 2022; 94:14317-14321. [PMID: 36190826 DOI: 10.1021/acs.analchem.2c02872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bipolar electrochemistry (BE) is a wireless electrochemical technique, which enables asymmetric electroactivity on the surface of conducting objects. This technique has been extensively studied for different electrochemical applications, including synthesis, separation, sensing, and surface modification. Here, we employ BE for imaging the transient electrochemical activity of different redox species with high accuracy via an array of light-emitting diodes having different lengths. Such a gradient allows the differentiation of redox systems due to their intrinsic difference in thermodynamic potential and the evaluation of their diffusional behavior based on the intensity of light emission. The result is an instantaneous optical readout of analytical information, equivalent to classic electrochemical scanning techniques, such as linear sweep voltammetry.
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Affiliation(s)
- Gerardo Salinas
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac, France
| | | | - Liubov Gerasimova
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac, France
| | - Laurent Bouffier
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac, France
| | - Alexander Kuhn
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac, France
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18
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Arnaboldi S, Salinas G, Bonetti G, Cirilli R, Benincori T, Kuhn A. Bipolar electrochemical rotors for the direct transduction of molecular chiral information. Biosens Bioelectron 2022; 218:114740. [PMID: 36179630 DOI: 10.1016/j.bios.2022.114740] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/25/2022] [Accepted: 09/15/2022] [Indexed: 11/27/2022]
Abstract
Efficient monitoring of chiral information of bioactive compounds has gained considerable attention, due to their involvement in different biochemical processes. In this work, we propose a novel dynamic system for the easy and straightforward recognition of chiral redox active molecules and its possible use for the efficient measurement of enantiomeric excess in solution. The approach is based on the synergy between the localized enantioselective oxidation of only one of the two antipodes of a chiral molecule and the produced charge-compensating asymmetric proton flux along a bipolar electrode. The resulting clockwise or anticlockwise rotation is triggered only when the probe with the right chirality is present in solution. The angle of rotation shows a linear correlation with the analyte concentration, enabling the quantification of enantiomeric ratios in mixtures where the two antipodes are present in solution. This device was successfully used to simultaneously measure different ratios of the enantiomers of 3,4-dihydroxyphenylalanine and tryptophan. The versatility of the proposed approach opens up the possibility to use such a dynamic system as a straightforward (bio)analytical tool for the qualitative and quantitative discrimination of different redox active chiral probes.
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Affiliation(s)
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607, Pessac, France
| | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Rome, Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33607, Pessac, France.
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19
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Salinas G, Niamlaem M, Kuhn A, Arnaboldi S. Recent Advances in Electrochemical Transduction of Chiral Information. Curr Opin Colloid Interface Sci 2022. [DOI: 10.1016/j.cocis.2022.101626] [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: 11/30/2022]
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20
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Arnaboldi S, Salinas G, Bonetti G, Garrigue P, Cirilli R, Benincori T, Kuhn A. Autonomous Chiral Microswimmers with Self‐mixing Capabilities for Highly Efficient Enantioselective Synthesis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Serena Arnaboldi
- University of Milan–Bicocca: Universita degli Studi di Milano-Bicocca Di Chimica ITALY
| | - Gerardo Salinas
- University of Bordeaux: Universite de Bordeaux Institute of Molecular Science FRANCE
| | - Giorgia Bonetti
- Insubria University - Como Campus: Universita degli Studi dell'Insubria - Sede di Como di Scienza e Alta Tecnologia ITALY
| | - Patrick Garrigue
- University of Bordeaux: Universite de Bordeaux Institute of Molecular Science FRANCE
| | - Roberto Cirilli
- Instituto superiore di santa Centro nazionale per il controlo e la valutazione dei Farmaci ITALY
| | - Tiziana Benincori
- Insubria University - Como Campus: Universita degli Studi dell'Insubria - Sede di Como di chimica ITALY
| | - Alexander Kuhn
- Bordeaux INP Chemistry ENSCBP 16 avenue Pey Berland 33607 Pessac FRANCE
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21
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Kassahun GS, Farias ED, Benizri S, Mortier C, Gaubert A, Salinas G, Garrigue P, Kuhn A, Zigah D, Barthélémy P. Electropolymerizable Thiophene-Oligonucleotides for Electrode Functionalization. ACS Appl Mater Interfaces 2022; 14:26350-26358. [PMID: 35649248 DOI: 10.1021/acsami.2c02993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Inserting complex biomolecules such as oligonucleotides during the synthesis of polymers remains an important challenge in the development of functionalized materials. In order to engineer such a biofunctionalized interface, a single-step method for the covalent immobilization of oligonucleotides (ONs) based on novel electropolymerizable lipid thiophene-oligonucleotide (L-ThON) conjugates was employed. Here, we report a new thiophene phosphoramidite building block for the synthesis of modified L-ThONs. The biofunctionalized material was obtained by direct electropolymerization of L-ThONs in the presence of 2,2'-bithiophene (BTh) to obtain a copolymer film on indium tin oxide electrodes. In situ electroconductance measurements and microstructural studies showed that the L-ThON was incorporated in the BTh copolymer backbone. Furthermore, the covalently immobilized L-ThON sequence showed selectivity in subsequent hybridization processes with a complementary target, demonstrating that L-ThONs can directly be used for manufacturing materials via an electropolymerization strategy. These results indicate that L-ThONs are promising candidates for the development of stable ON-based bioelectrochemical platforms.
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Affiliation(s)
- Getnet S Kassahun
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Eliana D Farias
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Sebastien Benizri
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Claudio Mortier
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Alexandra Gaubert
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
| | - Gerardo Salinas
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Patrick Garrigue
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Alexander Kuhn
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
| | - Dodzi Zigah
- University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, 33607 Pessac Cedex, France
- Université de Poitiers, IC2MP UMR-CNRS 7285, 86073 Poitiers Cedex 9, France
| | - Philippe Barthélémy
- ARNA Laboratory, University of Bordeaux, UMR CNRS 5320, INSERM U121, 33076 Bordeaux, France
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22
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Salinas G, Bonetti G, Cirilli R, Benincori T, Kuhn A, Arnaboldi S. Wireless light-emitting device for the determination of chirality in real samples. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140494] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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23
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Salinas G, Arnaboldi S, Bouffier L, Kuhn A. Cover Feature: Recent Advances in Bipolar Electrochemistry with Conducting Polymers (ChemElectroChem 1/2022). ChemElectroChem 2022. [DOI: 10.1002/celc.202101571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
| | - Serena Arnaboldi
- Dip. Di Chimica Univ. degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Laurent Bouffier
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
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24
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Salinas G, Arnaboldi S, Bouffier L, Kuhn A. Recent Advances in Bipolar Electrochemistry with Conducting Polymers. ChemElectroChem 2022. [DOI: 10.1002/celc.202101234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
| | - Serena Arnaboldi
- Dip. Di Chimica Univ. degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Laurent Bouffier
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux ISM UMR 5255 CNRS, Bordeaux INP 33607 Pessac France
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25
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Arnaboldi S, Salinas G, Bonetti G, Cirilli R, Benincori T, Kuhn A. Bipolar Electrochemical Measurement of Enantiomeric Excess with Inherently Chiral Polymer Actuators. ACS Meas Sci Au 2021; 1:110-116. [PMID: 34939074 PMCID: PMC8679086 DOI: 10.1021/acsmeasuresciau.1c00011] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Indexed: 05/11/2023]
Abstract
Straightforward enantioselective analytical methods are very important for drug safety, considering that in certain cases one of the two enantiomers of a chiral molecule might be harmful for humans. In this work, we propose a simple system for the direct and easy read-out of the enantiomeric excess of 3,4-dihydroxyphenylalanine (DOPA) as a model analyte. A conducting oligomer, i.e. oligo-(3,3'-dibenzothiophene), bearing inherently chiral features, is electrogenerated on a polypyrrole film. The resulting freestanding hybrid material is used as a wireless enantioselective actuator in a bipolar electrochemical cell. Combining in a single setup two individual actuators with opposite chiral features allows a direct visual read-out of enantiomeric excess, as the bending amplitude of each of the two actuators is directly correlated with the concentration of the corresponding stereoisomer of the analyte. Optimization of the experimental parameters results in efficient bending, giving access to the percentage values of the enantiomeric excess in mixtures containing different ratios of the antipodes, thus opening the way to potential applications for chiral in situ analysis.
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Affiliation(s)
- Serena Arnaboldi
- Université
de Bordeaux, CNRS UMR 5255, Bordeaux INP,
ENSCBP, 16 avenue Pey
Berland, 33607 Pessac, France
- Dipartimento
di Chimica, Universita degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Gerardo Salinas
- Université
de Bordeaux, CNRS UMR 5255, Bordeaux INP,
ENSCBP, 16 avenue Pey
Berland, 33607 Pessac, France
| | - Giorgia Bonetti
- Dipartimento
di Scienza e Alta Tecnologia, Universita
degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Roberto Cirilli
- Centro
Nazionale per il Controllo e la Valutazione dei Farmaci, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Roma, Italy
| | - Tiziana Benincori
- Dipartimento
di Scienza e Alta Tecnologia, Universita
degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Alexander Kuhn
- Université
de Bordeaux, CNRS UMR 5255, Bordeaux INP,
ENSCBP, 16 avenue Pey
Berland, 33607 Pessac, France
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26
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Salinas G, Arnaboldi S, Bonetti G, Cirilli R, Benincori T, Kuhn A. Featured Cover. Chirality 2021. [DOI: 10.1002/chir.23398] [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: 11/11/2022]
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27
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Nicolini T, Marquez AV, Goudeau B, Kuhn A, Salinas G. In Situ Spectroelectrochemical-Conductance Measurements as an Efficient Tool for the Evaluation of Charge Trapping in Conducting Polymers. J Phys Chem Lett 2021; 12:10422-10428. [PMID: 34672581 DOI: 10.1021/acs.jpclett.1c03108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In situ UV-vis-NIR spectroelectrochemistry has been intensively used to evaluate the electronic transitions during the charging/discharging process of π-conjugated polymers. However, the type of charge carrier and the mechanisms of their transport, remains still a point of discussion. Herein, the coupling between UV-vis-NIR spectroscopy and in situ electrochemical-conductance measurements is proposed to compare the doping process of three different thiophene-based conducting polymers. The simultaneous monitoring of electrical and absorption properties, associated with low energy electronic transitions characteristic for polarons and bipolarons, was achieved. In addition, this method allows evaluating the reversible charge trapping mechanism of poly-3,4-o-xylendioxythiophene (PXDOT), caused by the formation of σ-dimers, making it a very useful tool to determine relevant physicochemical properties of conductive materials.
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Affiliation(s)
- Tommaso Nicolini
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, F-33607 Pessac, France
| | | | - Bertrand Goudeau
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, F-33607 Pessac, France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, F-33607 Pessac, France
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, ENSCBP, F-33607 Pessac, France
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28
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Salinas G, Arnaboldi S, Bonetti G, Cirilli R, Benincori T, Kuhn A. Hybrid light-emitting devices for the straightforward readout of chiral information. Chirality 2021; 33:875-882. [PMID: 34617330 DOI: 10.1002/chir.23370] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 11/11/2022]
Abstract
Bipolar electrochemistry has gained increasing attention in recent years as an attractive transduction concept in analytical chemistry in general and, more specifically, in the frame of chiral recognition. Herein, we use this concept of wireless electrochemistry, based on the combination of the enantioselective oxidation of a chiral probe with the emission of light from a light-emitting diode (LED), as an alternative for an easy and straightforward readout of the presence of chiral molecules in solution. A hybrid polymer-microelectronic device was designed, using an inherently chiral oligomer, that is, oligo-(3,3'-dibenzothiophene) and a polypyrrole strip as the anode and cathode of a miniaturized LED. The wireless induced redox reactions trigger light emission when the probe with the right chirality is present in solution, whereas no light emission is observed for the opposite enantiomer. The average light intensity shows a linear correlation with the analyte concentration, and the concept opens the possibility to quantify the enantiomeric excess in mixtures of the molecular antipodes.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France
| | - Serena Arnaboldi
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France.,Dip. Di Chimica, Univ. degli Studi di Milano, Milan, Italy
| | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Rome, Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Alexander Kuhn
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France
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29
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Boehmer L, Roy U, Schrag J, Martin N, Salinas G, Coleman B, Howson A, Shivakumar L. OA10.01 Perceptions of Biomarker Testing for Underserved Patients With Lung Cancer: A Mixed-Methods Survey of Us-Based Oncology Clinicians. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Abstract
Autonomous swimmers have been intensively studied in recent years due to their numerous potential applications in many areas ranging from biomedicine to environmental remediation. Their motion is based either on different self-propulsion mechanisms or on the use of various external stimuli. Herein, the synergy between the ion flux around self-electrophoretic Mg/Pt Janus swimmers and an external magnetic field is proposed as an efficient alternative mechanism to power swimmers on the basis of the resulting Lorentz force. A strong magnetohydrodynamic effect is observed due to the orthogonal combination of magnetic field and spontaneous ionic currents, leading to an increase of the swimmer speed by up to 2 orders of magnitude. Furthermore, the trajectory of the self-propelled swimmers can be controlled by the orientation of the magnetic field, due to the presence of an additional torque force caused by a horizontal cation flux along the swimmer edges, resulting in predictable clockwise or anticlockwise motion. In addition, this effect is independent of the swimmer size, since a similar type of rotational motion is observed for macro- and microscale objects.
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Affiliation(s)
- Gerardo Salinas
- Bordeaux INP, ISM, UMR 5255, University of Bordeaux, CNRS, F-33607 Pessac, France
| | | | - Patrick Garrigue
- Bordeaux INP, ISM, UMR 5255, University of Bordeaux, CNRS, F-33607 Pessac, France
| | - Neso Sojic
- Bordeaux INP, ISM, UMR 5255, University of Bordeaux, CNRS, F-33607 Pessac, France
| | - Laurent Bouffier
- Bordeaux INP, ISM, UMR 5255, University of Bordeaux, CNRS, F-33607 Pessac, France
| | - Alexander Kuhn
- Bordeaux INP, ISM, UMR 5255, University of Bordeaux, CNRS, F-33607 Pessac, France
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31
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Pavel I, Salinas G, Mierzwa M, Arnaboldi S, Garrigue P, Kuhn A. Front Cover: Cooperative Chemotaxis of Magnesium Microswimmers for Corrosion Spotting (ChemPhysChem 13/2021). Chemphyschem 2021. [DOI: 10.1002/cphc.202100444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Maciej Mierzwa
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Serena Arnaboldi
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Patrick Garrigue
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
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32
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Pavel IA, Salinas G, Mierzwa M, Arnaboldi S, Garrigue P, Kuhn A. Cooperative Chemotaxis of Magnesium Microswimmers for Corrosion Spotting. Chemphyschem 2021; 22:1321-1325. [PMID: 33939868 DOI: 10.1002/cphc.202100236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/03/2021] [Indexed: 01/02/2023]
Abstract
Numerous artificial micro- and nanomotors, as well as various swimmers have been inspired by living organisms that are able to move in a coordinated manner. Their cooperation has also gained a lot of attention because the resulting clusters are able to adapt to changes in their environment and to perform complex tasks. However, mimicking such a collective behavior remains a challenge. In the present work, magnesium microparticles are used as chemotactic swimmers with pronounced collective features, allowing the gradual formation of macroscopic agglomerates. The formed clusters act like a single swimmer able to follow pH gradients. This dynamic behavior can be used to spot localized corrosion events in a straightforward way. The autonomous docking of the swimmers to the corrosion site leads to the formation of a local protection layer, thus increasing corrosion resistance and triggering partial self-healing.
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Affiliation(s)
| | - Gerardo Salinas
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
| | - Maciej Mierzwa
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
| | - Serena Arnaboldi
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
| | - Patrick Garrigue
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France
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Wolk K, Brembach T, Šimaitė D, Bartnik E, Cucinotta S, Pokrywka A, Irmer M, Triebus J, Witte‐Händel E, Salinas G, Leeuw T, Volk H, Ghoreschi K, Sabat R. Activity and components of the granulocyte colony‐stimulating factor pathway in hidradenitis suppurativa*. Br J Dermatol 2021; 185:164-176. [DOI: 10.1111/bjd.19795] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2020] [Indexed: 12/12/2022]
Affiliation(s)
- K. Wolk
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
- Inflammation and Regeneration of Skin BIH Center for Regenerative Therapies Charité – Universitätsmedizin Berlin Berlin Germany
| | - T.‐C. Brembach
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
- University of PotsdamInstitute of Nutritional ScienceDepartment of Food Chemistry Potsdam Germany
| | - D. Šimaitė
- Data and Data Sciences Sanofi‐Aventis Deutschland GmbH FrankfurtGermany
| | - E. Bartnik
- Immunology and Inflammation Research Sanofi‐Aventis Deutschland GmbH Frankfurt Germany
| | - S. Cucinotta
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
| | - A. Pokrywka
- Department of Dermatology, Venereology and Allergology Charité – Universitätsmedizin Berlin Germany
| | - M.L. Irmer
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
| | - J. Triebus
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
| | - E. Witte‐Händel
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
| | - G. Salinas
- Transcriptome and Genome Core Unit University Medical Center Göttingen Göttingen Germany
| | - T. Leeuw
- Immunology and Inflammation Research Sanofi‐Aventis Deutschland GmbH Frankfurt Germany
| | - H.‐D. Volk
- BIH Center for Regenerative Therapies Charité – Universitätsmedizin Berlin Berlin Germany
- Institute of Medical Immunology Charité – Universitätsmedizin Berlin Germany
| | - K. Ghoreschi
- Department of Dermatology, Venereology and Allergology Charité – Universitätsmedizin Berlin Germany
| | - R. Sabat
- Psoriasis Research and Treatment Centre Charité – Universitätsmedizin Berlin Berlin Germany
- Interdisciplinary group Molecular Immunopathology Dermatology/Medical Immunology Charité – Universitätsmedizin Berlin Berlin Germany
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Salinas G, Pavel I, Sojic N, Kuhn A. Cover Feature: Electrochemistry‐Based Light‐Emitting Mobile Systems (ChemElectroChem 24/2020). ChemElectroChem 2020. [DOI: 10.1002/celc.202001422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | | | - Neso Sojic
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | | | - Neso Sojic
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS Bordeaux INP, ISM, UMR 5255 33607 Pessac France
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36
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Salinas G, Villarroel Marquez A, Idir M, Shinde S, Frontana‐Uribe BA, Raoux M, Lang J, Cloutet E, Kuhn A. Sodium‐Ion Selectivity Study of a Crown‐Ether‐Functionalized PEDOT Analog. ChemElectroChem 2020. [DOI: 10.1002/celc.202000693] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux ISM, CNRS UMR 5255 Bordeaux INP, F 33607 Pessac France
| | - Ariana Villarroel Marquez
- Univ. Bordeaux LCPO, CNRS UMR 5629 Bordeaux INP F-33615 Pessac France
- Univ. Bordeaux CBMN, CNRS UMR 5248 Bordeaux INP F-33600 Pessac France
| | - Maël Idir
- Univ. Bordeaux LCPO, CNRS UMR 5629 Bordeaux INP F-33615 Pessac France
| | - Shekhar Shinde
- Univ. Bordeaux LCPO, CNRS UMR 5629 Bordeaux INP F-33615 Pessac France
| | - Bernardo A. Frontana‐Uribe
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM Km 14.5 Carretera Toluca-Atlacomulco 50200 Toluca México
- Instituto de Química, UNAM Circuito Exterior Ciudad Universitaria 04510 CDMX, México
| | - Matthieu Raoux
- Univ. Bordeaux CBMN, CNRS UMR 5248 Bordeaux INP F-33600 Pessac France
| | - Jochen Lang
- Univ. Bordeaux CBMN, CNRS UMR 5248 Bordeaux INP F-33600 Pessac France
| | - Eric Cloutet
- Univ. Bordeaux LCPO, CNRS UMR 5629 Bordeaux INP F-33615 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux ISM, CNRS UMR 5255 Bordeaux INP, F 33607 Pessac France
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37
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Salinas G, Dauphin AL, Voci S, Bouffier L, Sojic N, Kuhn A. Asymmetry controlled dynamic behavior of autonomous chemiluminescent Janus microswimmers. Chem Sci 2020; 11:7438-7443. [PMID: 34123025 PMCID: PMC8159428 DOI: 10.1039/d0sc02431g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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] [Indexed: 12/28/2022] Open
Abstract
Asymmetrically modified Janus microparticles are presented as autonomous light emitting swimmers. The localized dissolution of hybrid magnesium/polymer objects allows combining chemiluminescence with the spontaneous production of H2 bubbles, and thus generating directed motion. These light-emitting microswimmers are synthesized by using a straightforward methodology based on bipolar electromilling, followed by indirect bipolar electrodeposition of an electrophoretic paint. An optimization of the experimental parameters enables in the first step the formation of well-defined isotropic or anisotropic Mg microparticles. Subsequently, they are asymmetrically modified by wireless deposition of an anodic paint. The degree of asymmetry of the resulting Janus particles can be fine-tuned, leading to a controlled directional motion due to anisotropic gas formation. This autonomous motion is coupled with the emission of bright orange light when Ru(bpy)32+ and S2O82− are present in the solution as chemiluminescent reagents. The light emission is based on an original process of interfacial redox-induced chemiluminescence, thus allowing an easy visualization of the swimmer trajectories. Asymmetrically modified Janus microparticles are presented as autonomous light emitting swimmers with shape-controlled trajectories.![]()
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alice L Dauphin
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Silvia Voci
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Laurent Bouffier
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Neso Sojic
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP 33607 Pessac France
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38
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Villarroel Marquez A, Salinas G, Abarkan M, Idir M, Brochon C, Hadziioannou G, Raoux M, Kuhn A, Lang J, Cloutet E. Design of Potassium‐Selective Mixed Ion/Electron Conducting Polymers. Macromol Rapid Commun 2020. [DOI: 10.1002/marc.202070030] [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: 11/10/2022]
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39
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Villarroel Marquez A, Salinas G, Abarkan M, Idir M, Brochon C, Hadziioannou G, Raoux M, Kuhn A, Lang J, Cloutet E. Design of Potassium‐Selective Mixed Ion/Electron Conducting Polymers. Macromol Rapid Commun 2020; 41:e2000134. [DOI: 10.1002/marc.202000134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/07/2020] [Accepted: 04/20/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Ariana Villarroel Marquez
- University of BordeauxCNRS, Bordeaux INP LCPO, UMR 5629 Pessac F‐33615 France
- Prof. J. LangUniversity of BordeauxCNRS, Bordeaux INP CBMN, UMR 5248 Pessac F‐33600 France
| | - Gerardo Salinas
- University of BordeauxCNRS, Bordeaux INP ISM, UMR 5255 Pessac F‐33607 France
| | - Myriam Abarkan
- Prof. J. LangUniversity of BordeauxCNRS, Bordeaux INP CBMN, UMR 5248 Pessac F‐33600 France
| | - Maël Idir
- University of BordeauxCNRS, Bordeaux INP LCPO, UMR 5629 Pessac F‐33615 France
| | - Cyril Brochon
- University of BordeauxCNRS, Bordeaux INP LCPO, UMR 5629 Pessac F‐33615 France
| | | | - Matthieu Raoux
- Prof. J. LangUniversity of BordeauxCNRS, Bordeaux INP CBMN, UMR 5248 Pessac F‐33600 France
| | - Alexander Kuhn
- University of BordeauxCNRS, Bordeaux INP ISM, UMR 5255 Pessac F‐33607 France
| | - Jochen Lang
- Prof. J. LangUniversity of BordeauxCNRS, Bordeaux INP CBMN, UMR 5248 Pessac F‐33600 France
| | - Eric Cloutet
- University of BordeauxCNRS, Bordeaux INP LCPO, UMR 5629 Pessac F‐33615 France
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40
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Salinas G, Dauphin AL, Colin C, Villani E, Arbault S, Bouffier L, Kuhn A. Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alice L. Dauphin
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Camille Colin
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Elena Villani
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Stéphane Arbault
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Laurent Bouffier
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alexander Kuhn
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
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41
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Salinas G, Dauphin AL, Colin C, Villani E, Arbault S, Bouffier L, Kuhn A. Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers. Angew Chem Int Ed Engl 2020; 59:7508-7513. [DOI: 10.1002/anie.201915705] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Gerardo Salinas
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alice L. Dauphin
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Camille Colin
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Elena Villani
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Stéphane Arbault
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Laurent Bouffier
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
| | - Alexander Kuhn
- Univ. BordeauxCNRS UMR 5255Bordeaux INP, Site ENSCBP 33607 Pessac France
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Assavapanumat S, Gupta B, Salinas G, Goudeau B, Wattanakit C, Kuhn A. Chiral platinum-polypyrrole hybrid films as efficient enantioselective actuators. Chem Commun (Camb) 2019; 55:10956-10959. [PMID: 31451809 DOI: 10.1039/c9cc05854k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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
We report the synthesis of a hybrid bilayer, being composed of a free-standing conducting polymer film and a layer of mesoporous metal, encoded with chiral features. The resulting structure constitutes an enantioselective actuator, which can be electrochemically addressed in a wireless way. The controlled discriminatory deformation of the film allows an easy readout of chiral information.
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Affiliation(s)
- Sunpet Assavapanumat
- University of Bordeaux, CNRS, Bordeaux INP, ISM UMR 5255, Site ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France.
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Salinas G, Frontana‐Uribe BA. Cover Feature: Analysis of Conjugated Polymers Conductivity by in situ Electrochemical‐Conductance Method (ChemElectroChem 16/2019). ChemElectroChem 2019. [DOI: 10.1002/celc.201901159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM, UMR 5255Bordeaux INP Site ENSCBP F 33607 Pessac France
| | - Bernardo A. Frontana‐Uribe
- Centro Conjunto de Investigación en Química SustentableUAEM-UNAM Km 14.5 Carretera Toluca-Atlacomulco 50200 Toluca México
- Instituto de Química UNAMCircuito Exterior Ciudad Universitaria 04510, CDMX México
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM, UMR 5255Bordeaux INP Site ENSCBP F 33607 Pessac France
| | - Bernardo A. Frontana‐Uribe
- Centro Conjunto de Investigación en Química SustentableUAEM-UNAM Km 14.5 Carretera Toluca-Atlacomulco 50200 Toluca México
- Instituto de Química UNAMCircuito Exterior Ciudad Universitaria 04510, CDMX México
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Salinas G, Ibanez JG, Vásquez-Medrano R, Frontana-Uribe BA. Analysis of Cu in Mezcal Commercial Samples using Square Wave Anodic Stripping Voltammetry. J ELECTROCHEM SCI TE 2018. [DOI: 10.33961/jecst.2018.9.4.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Salinas G, Frontana-Uribe BA, Reculusa S, Garrigue P, Kuhn A. Highly Ordered Macroporous Poly-3,4- ortho-xylendioxythiophene Electrodes as a Sensitive Analytical Tool for Heavy Metal Quantification. Anal Chem 2018; 90:11770-11774. [PMID: 30251532 DOI: 10.1021/acs.analchem.8b03779] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Highly ordered macroporous electrodes of the conducting polymer poly-3,4- ortho-xylendioxythiophene (PXDOT) are presented as a sensitive analytical tool for heavy metal ion quantification due to a controlled gain in electroactive area. They were designed by using colloidal crystal templates. A direct correlation between the final number of porous layers and the deposition charge ( Qd) employed for electropolymerization is observed. All the electrodes exhibit a surface-templated structure due to an interaction between the radical cation, formed during the electropolymerization, and the surface groups of the silica beads. The voltamperometric response of the macroporous PXDOT electrodes shows a rather fast electron transfer with Δ Ep values between 70 mV and 110 mV. Square wave anodic stripping voltammetric (SWASV) analysis of Cu2+ as a representative heavy metal ion shows a linear response in the subppm range. As a model application, the efficient quantification of Cu2+ in a commercial mezcal sample is validated by the standard addition method and the results correlate adequately with the values obtained by atomic absorption spectroscopy.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Toluca 50200 , Estado de México , México
| | - Bernardo A Frontana-Uribe
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM , Toluca 50200 , Estado de México , México.,Instituto de Química , Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universidad 04510 , Ciudad de México , México
| | - Stéphane Reculusa
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
| | - Patrick Garrigue
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM, UMR 5255, Bordeaux INP, Site ENSCBP, F 33607 Pessac , France.,CNRS, ISM, UMR 5255, F-33400 Talence , France
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Taylor D, Braun G, Engelbrecht F, Salinas G, Sinha K. Use of theLitomosoides sigmodontis- Mouse model in development of anOnchocercavaccine. I - molecular ofO. volvulusantigens. Parasite 2014. [DOI: 10.1051/parasite/199401s1029] [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: 11/14/2022] Open
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Avila L, Barroso A, Rivera G, Salinas G, Aracena B, Cahuana L. Economic and health consequences in women subject to intimate partner abuse. Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040590q.6] [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: 11/03/2022]
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49
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Benitez M, Vazquez J, Vedovato E, Salinas G, Hayetian V, Firpo D, Perrotta M, Coronel A, Coll C. Analisis de la Prevalencia de Diferentes Microorganismos en la Unidad de Terapia Intensiva. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2006.10.016] [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: 11/10/2022]
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Marco M, Baz A, Fernandez C, Gonzalez G, Hellman U, Salinas G, Nieto A. A relevant enzyme in granulomatous reaction, active matrix metalloproteinase-9, found in bovine Echinococcus granulosus hydatid cyst wall and fluid. Parasitol Res 2006; 100:131-9. [PMID: 16858614 DOI: 10.1007/s00436-006-0237-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Accepted: 05/10/2006] [Indexed: 11/28/2022]
Abstract
In addition to the ability of matrix metalloproteinases (MMP) to degrade components of the extracellular matrix and their involvement in pathology-related processes of tissue remodeling, they were recently reported to enhance inflammation by activation of proinflammatory cytokines, or their release from the cell surface. In the work reported here, proteolytic activity previously found for hydatid cysts was further characterized as MMP-9. Active host MMP-9 was found in walls and fluids of bovine hydatid cysts of Echinococcus granulosus in the environment of granulomatous reaction. Pooled walls and fluids of hydatid cysts obtained from infected cattle were processed. Strong proteolytic activity was detected by zymography. The proteolytic fraction was purified by anion exchange and gelatin-agarose affinity chromatography. Major proteinases of the purified fraction were subjected to mass spectrometry and their identities were further confirmed by Western blotting using commercial anti-human MMP-9 monoclonal antibodies. Two proteinases were characterized as latent and active forms of host MMP-9. Using the same antibody for immunoblot, activity was localized, in paraffin-embedded sections of the parasite and the local host environment, to epithelioid and giant multinucleated cells. It is proposed here that MMP-9 is secreted by specialized host cells of monocytic lineage (epithelioid/giant cells) as an effector, in an attempt to digest the persistent foreign body. In vivo activation of MMP-9 suggests its involvement in inflammatory reaction and in the chemotaxis of inflammatory cells to the cyst. However, E. granulosus can deal efficiently with MMP-9. Research is suggested into possible immune evasion mechanisms, including the secretion of an inhibitory molecule.
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Affiliation(s)
- M Marco
- Cátedra de Inmunología, Facultad de Química, Facultad de Ciencias, Instituto de Higiene, Universidad de la República, Av. Alfredo Navarro 3051, Segundo Piso, Montevideo, CP 11600, Uruguay.
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