1
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Imato K, Hino T, Kaneda N, Imae I, Shida N, Inagi S, Ooyama Y. Wireless Electrochemical Gel Actuators. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305067. [PMID: 37858925 DOI: 10.1002/smll.202305067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/29/2023] [Indexed: 10/21/2023]
Abstract
Soft actuators generate motion in response to external stimuli and are indispensable for soft robots, particularly future miniature robots with complex structure and motion. Similarly to conventional hard robots, electricity is suitable for the stimulation. However, previous electrochemical soft actuators require a tethered connection to a power supply, limiting their size, structure, and motion. Here, wireless electrochemical soft actuators composed of hydrogels and driven by bipolar electrochemistry are reported. Viologen, which dimerizes by one-electron reduction and dissociates by one-electron oxidation, is incorporated in the side chains of the gel networks and works as a reversible cross-link. Wireless and reversible electrochemical actuation of the hydrogels, i.e., muscle-like shrinking and swelling, is demonstrated at microscopic and even macroscopic scales.
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Affiliation(s)
- Keiichi Imato
- Applied Chemistry Program Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, 739-8527, Japan
| | - Taichi Hino
- Applied Chemistry Program Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, 739-8527, Japan
| | - Naoki Kaneda
- Applied Chemistry Program Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, 739-8527, Japan
| | - Ichiro Imae
- Applied Chemistry Program Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, 739-8527, Japan
| | - Naoki Shida
- Department of Chemistry and Life Science Graduate School of Engineering Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Shinsuke Inagi
- Department of Chemical Science and Engineering School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan
| | - Yousuke Ooyama
- Applied Chemistry Program Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, 739-8527, Japan
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2
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Arnaboldi S. Wireless electrochemical actuation of soft materials towards chiral stimuli. Chem Commun (Camb) 2023; 59:2072-2080. [PMID: 36748650 PMCID: PMC9933456 DOI: 10.1039/d2cc06630k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Different areas of modern chemistry, require wireless systems able to transfer chirality from the molecular to the macroscopic event. The ability to recognize the enantiomers of a chiral analyte is highly desired, since in the majority of cases such molecules present different physico-chemical properties that could lead, eventually, to dangerous or harmful interactions with the environment or the human body. From an electrochemical point of view, enantiomers have the same electrochemical behavior except when they interact in a chiral environment. In this Feature Article, different approaches for the electrochemical recognition of chiral information based on the actuation of conducting polymers are described. Such a dynamic behavior of π-conjugated materials is based on an electrochemically induced shrinking/swelling transition of the polymeric matrix. Since all the systems, described so far in the literature, are achiral and require a direct connection to a power supply, new strategies will be presented in the manuscript, concerning the implementation of chirality in electrochemical actuators and their use in a wireless manner through bipolar electrochemistry. Herein, the synergy between the wireless unconventional actuation and the outstanding enantiorecognition of inherent chiral oligomers is presented as an easy and straightforward read out of chiral information in solution. This approach presents different advantages in comparison to classic electrochemical systems such as its wireless nature and the possible real-time data acquisition.
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Affiliation(s)
- Serena Arnaboldi
- Università degli Studi di Milano, Dipartimento di Chimica, Via Golgi 19, 20133, Milano, Italy.
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3
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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] [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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4
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Gupta B, Suchomski P, Ashwin Melvin A, Linfield S, Opallo M, Nogala W. Optical readout of moisture in sand employing bipolar electrochemistry. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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5
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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] [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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6
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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 MEASUREMENT SCIENCE 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] [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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7
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Direct dynamic read-out of molecular chirality with autonomous enzyme-driven swimmers. Nat Chem 2021; 13:1241-1247. [PMID: 34650234 DOI: 10.1038/s41557-021-00798-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 08/24/2021] [Indexed: 11/08/2022]
Abstract
A key approach for designing bioinspired machines is to transfer concepts from nature to man-made structures by integrating biomolecules into artificial mechanical systems. This strategy allows the conversion of molecular information into macroscopic action. Here, we describe the design and dynamic behaviour of hybrid bioelectrochemical swimmers that move spontaneously at the air-water interface. Their motion is governed by the diastereomeric interactions between immobilized enantiopure oligomers and the enantiomers of a chiral probe molecule present in solution. These dynamic bipolar systems are able to convert chiral information present at the molecular level into enantiospecific macroscopic trajectories. Depending on the enantiomer in solution, the swimmers will move clockwise or anticlockwise; the concept can also be used for the direct visualization of the degree of enantiomeric excess by analysing the curvature of the trajectories. Deciphering in such a straightforward way the enantiomeric ratio could be useful for biomedical applications, for the read-out of food quality or as a more general analogue of polarimetric measurements.
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8
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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] [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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9
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Bouffier L, Zigah D, Sojic N, Kuhn A. Bipolar (Bio)electroanalysis. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2021; 14:65-86. [PMID: 33940930 DOI: 10.1146/annurev-anchem-090820-093307] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This contribution reviews a selection of the most recent studies on the use of bipolar electrochemistry in the framework of analytical chemistry. Despite the fact that the concept is not new, with several important studies dating back to the middle of the last century, completely novel and very original approaches have emerged over the last decade. This current revival illustrates that scientists still (re)discover some exciting virtues of this approach, which are useful in many different areas, especially for tackling analytical challenges in an unconventional way. In several cases, this "wireless" electrochemistry strategy enables carrying out measurements that are simply not possible with classic electrochemical approaches. This review will hopefully stimulate new ideas and trigger scientists to integrate some aspects of bipolar electrochemistry in their work in order to drive the topic into yet unexplored and eventually completely unexpected directions.
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Affiliation(s)
- Laurent Bouffier
- Bordeaux INP, Institute of Molecular Science, and CNRS UMR 5255, University of Bordeaux, 33607 Pessac, France; , , ,
| | - Dodzi Zigah
- Bordeaux INP, Institute of Molecular Science, and CNRS UMR 5255, University of Bordeaux, 33607 Pessac, France; , , ,
| | - Neso Sojic
- Bordeaux INP, Institute of Molecular Science, and CNRS UMR 5255, University of Bordeaux, 33607 Pessac, France; , , ,
| | - Alexander Kuhn
- Bordeaux INP, Institute of Molecular Science, and CNRS UMR 5255, University of Bordeaux, 33607 Pessac, France; , , ,
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10
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Ismail A, Voci S, Descamps L, Buhot A, Sojic N, Leroy L, Bouchet-Spinelli A. Bipolar Electrochemiluminescence Imaging: A Way to Investigate the Passivation of Silicon Surfaces. Chemphyschem 2021; 22:1094-1100. [PMID: 33826213 DOI: 10.1002/cphc.202100112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/17/2021] [Indexed: 11/09/2022]
Abstract
This work depicts the original combination of electrochemiluminescence (ECL) and bipolar electrochemistry (BPE) to map in real-time the oxidation of silicon in microchannels. We fabricated model silicon-PDMS microfluidic chips, optionally containing a restriction, and monitored the evolution of the surface reactivity using ECL. BPE was used to remotely promote ECL at the silicon surface inside microfluidic channels. The effects of the fluidic design, the applied potential and the resistance of the channel (controlled by the fluidic configuration) on the silicon polarization and oxide formation were investigated. A potential difference down to 6 V was sufficient to induce ECL, which is two orders of magnitude less than in classical BPE configurations. Increasing the resistance of the channel led to an increase in the current passing through the silicon and boosted the intensity of ECL signals. Finally, the possibility of achieving electrochemical reactions at predetermined locations on the microfluidic chip was investigated using a patterning of the silicon oxide surface by etched micrometric squares. This ECL imaging approach opens exciting perspectives for the precise understanding and implementation of electrochemical functionalization on passivating materials. In addition, it may help the development and the design of fully integrated microfluidic biochips paving the way for development of original bioanalytical applications.
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Affiliation(s)
- Abdulghani Ismail
- IRIG-SYMMES, University Grenoble Alpes, CEA, CNRS, 17 Avenue des Martyrs, 38054, Grenoble, France
| | - Silvia Voci
- ISM, UMR CNRS 5255, University of Bordeaux, Bordeaux INP, 351 Cours de la Libération, 33405, Talence, France
| | - Lucie Descamps
- IRIG-SYMMES, University Grenoble Alpes, CEA, CNRS, 17 Avenue des Martyrs, 38054, Grenoble, France
| | - Arnaud Buhot
- IRIG-SYMMES, University Grenoble Alpes, CEA, CNRS, 17 Avenue des Martyrs, 38054, Grenoble, France
| | - Neso Sojic
- ISM, UMR CNRS 5255, University of Bordeaux, Bordeaux INP, 351 Cours de la Libération, 33405, Talence, France
| | - Loïc Leroy
- IRIG-SYMMES, University Grenoble Alpes, CEA, CNRS, 17 Avenue des Martyrs, 38054, Grenoble, France
| | - Aurélie Bouchet-Spinelli
- IRIG-SYMMES, University Grenoble Alpes, CEA, CNRS, 17 Avenue des Martyrs, 38054, Grenoble, France
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11
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Gupta B, Zhang L, Melvin AA, Goudeau B, Bouffier L, Kuhn A. Designing tubular conducting polymer actuators for wireless electropumping. Chem Sci 2020; 12:2071-2077. [PMID: 34163970 PMCID: PMC8179276 DOI: 10.1039/d0sc05885h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Rational design and shaping of soft smart materials offer potential applications that cannot be addressed with rigid systems. In particular, electroresponsive elastic materials are well-suited for developing original active devices, such as pumps and actuators. However, applying the electric stimulus requires usually a physical connection between the active part and a power supply. Here we report about the design of an electromechanical system based on conducting polymers, enabling the actuation of a wireless microfluidic pump. Using the electric field-induced asymmetric polarization of miniaturized polypyrrole tubes, it is possible to trigger simultaneously site-specific chemical reactions, leading to shrinking and swelling in aqueous solution without any physical connection to a power source. The complementary electrochemical reactions occurring at the opposite extremities of the tube result in a differential change of its diameter. In turn, this electromechanical deformation allows inducing highly controlled fluid dynamics. The performance of such a remotely triggered electrochemically active soft pump can be fine-tuned by optimizing the wall thickness, length and inner diameter of the material. The efficient and fast actuation of the polymer pump opens up new opportunities for actuators in the field of fluidic or microfluidic devices, such as controlled drug release, artificial organs and bioinspired actuators. Tubular conducting polymer actuators are used for developing a wireless electropumping device. Bipolar electrochemistry, allowing symmetry breaking in terms of polarization and electrochemical reactions, is the key ingredient for efficient pumping. ![]()
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Affiliation(s)
- Bhavana Gupta
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France .,National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Kaifeng 475004 China
| | - Lin Zhang
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France .,National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University Kaifeng 475004 China
| | - Ambrose Ashwin Melvin
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Bertrand Goudeau
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Laurent Bouffier
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
| | - Alexander Kuhn
- Univ. Bordeaux, ISM, CNRS UMR 5255, Bordeaux INP, ENSCBP 16 Avenue Pey Berland 33607 Pessac France
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12
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Salinas G, Pavel I, Sojic N, Kuhn A. Electrochemistry‐Based Light‐Emitting Mobile Systems. ChemElectroChem 2020. [DOI: 10.1002/celc.202001104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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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13
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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] [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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14
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Arnaboldi S, Gupta B, Benincori T, Bonetti G, Cirilli R, Kuhn A. Absolute Chiral Recognition with Hybrid Wireless Electrochemical Actuators. Anal Chem 2020; 92:10042-10047. [DOI: 10.1021/acs.analchem.0c01817] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Serena Arnaboldi
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Bhavana Gupta
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng 475004, China
| | - Tiziana Benincori
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Giorgia Bonetti
- Dipartimento di Scienza e Alta Tecnologia, Università 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
| | - Alexander Kuhn
- Univ. Bordeaux, CNRS UMR 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607 Pessac, France
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15
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Remote Actuation of a Light‐Emitting Device Based on Magnetic Stirring and Wireless Electrochemistry. Chemphyschem 2020; 21:600-604. [DOI: 10.1002/cphc.202000019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 01/31/2020] [Indexed: 12/16/2022]
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16
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Kuhn A. Physical Chemistry, a Discipline in Its Golden Age. Chemphyschem 2020; 21:7-8. [PMID: 31621173 DOI: 10.1002/cphc.201900932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Alexander Kuhn is Full Professor at the Institute of Molecular Science (University Bordeaux, CNRS, Bordeaux INP) as well as Adjunct Professor at VISTEC (Thailand) and Henan University (China). He currently serves as a chair of the ChemPhysChem Editorial Board.
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Affiliation(s)
- Alexander Kuhn
- Univ. Bordeaux, ISM UMR CNRS 5255, Bordeaux INP, ENSCBP, 16 avenue Pey Berland, 33607, Pessac, France
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