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3. Single-molecule DNA sensing via plasmon enhanced fluorescence

Author

Vincenzo Lamberti, Mathias Dolci, and Peter Zijlstra

Abstract

We demonstrate a single-molecule DNA sensor that employs plasmon-enhanced fluorescence combined with a sandwich assay. We quantify the dynamic range and detection limit of this new sensor, and discuss future applications.

Published
2022
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4. Effect of Dipolar Interactions on the Assembly Process of Iron Oxide Nanoparticles Promoted by the CuAAC 'Click' Chemistry Reaction

Author

Yu-ting Lei, Céline Kiefer, Benoit P. Pichon, Mathias Dolci, Lise-Marie Lacroix, Sylvie Begin-Colin, Cédric Leuvrey, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), and Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Kinetics, Iron oxide, Nanoparticle, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Cycloaddition, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Nanomaterials, chemistry.chemical_compound, General Energy, chemistry, Click chemistry, Magnetic nanoparticles, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Physical and Theoretical Chemistry, 0210 nano-technology, Iron oxide nanoparticles
Abstract

Nanoparticle assemblies are very attractive because they allow the fine-tuning of magnetic properties by taking advantage of collective behavior ruled by interparticle interactions. Nevertheless, great efforts to control the spatial arrangement of nanoparticles still have to be developed in order to integrate such nanomaterials in devices for applications in fields such as sensors and recording media. Herein, we report on the assembly of iron oxide magnetic nanoparticles promoted by copper-catalyzed alkyne-azide cycloaddition (CuAAC) “click” reaction. Azido-terminated nanoparticles were assembled onto alkyne-terminated gold substrates. The assembly mechanism was investigated by monitoring the density of nanoparticles as a function of their size and concentration. The kinetics of the assembly process is exponential and is favored by the increase of the nanoparticle size and of the concentration. We show that the assembly of nanoparticles is controlled by the random sequential adsorption (RSA) mechanism below a critical size. In contrast, large nanoparticles allow strong dipolar interactions which participate actively in the assembly process, thus they avoid the RSA pathway. These two different mechanism pathways have a significant influence on the spatial arrangement of nanoparticles. The RSA results in rather isolated small nanoparticles at the earliest reaction times which become gradually a discontinuous monolayer. In contrast, the dipolar interaction assisted RSA mechanism (DIA-RSA) favors linear or 2D small assemblies which quickly grow in tight-packed monolayers of nanoparticles. Finally, the magnetic collective properties of these assemblies are markedly favored by the increase of the nanoparticle size.

Published
2019
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5. Colorimetric detection of chromium (VI) ion using poly(N-phenylglycine) nanoparticles acting as a peroxidase mimetic catalyst

Author

Farnoush Faridbod, Alexandre Barras, Sabine Szunerits, Abir Swaidan, Rabah Boukherroub, Sena Ghayyem, Mathias Dolci, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), NanoBioInterfaces - IEMN (NBI - IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), and Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA)

Subjects
Chromium, Glycine, Nanoparticle, chemistry.chemical_element, 02 engineering and technology, Poly(N-phenylglycine) nanoparticles, 01 natural sciences, Analytical Chemistry, Catalysis, Absorbance, chemistry.chemical_compound, [SPI]Engineering Sciences [physics], Hexavalent chromium, Hydrogen peroxide, Chromium(VI) ion, Peroxidase, Detection limit, 010401 analytical chemistry, Substrate (chemistry), Hydrogen Peroxide, 021001 nanoscience & nanotechnology, Peroxidase-like activity, 0104 chemical sciences, Peroxidases, chemistry, Heavy metals ion, Nanoparticles, Colorimetry, 0210 nano-technology, Colorimetric detection, Nuclear chemistry
Abstract

International audience; This paper reports on enzyme-like catalytic properties of polyethylene glycol-functionalized poly(N-phenylglycine) (PNPG-PEG) nanoparticles, which have not been explored to date. The developed nanoparticles have the ability to display great inherent peroxidase-like activity at very low concentrations, and are able to catalyze the oxidation of 3,3',5,5'tetramethylbenzidine (TMB) substrate in presence of hydrogen peroxide (H2O2). The oxidized product of TMB has a deep blue color with a maximum absorbance at ~655 nm. The PNPG-PEG nanoparticles exhibit Km values of 0.2828 for TMB and 0.0799 for H2O2, indicating that TMB oxidation takes place at lower concentration of H2O2 in comparison to other nanozymes. Based on the known mechanism of H2O2 oxidation by hexavalent chromium [Cr(VI)] ions to generate hydroxyl radicals (.OH), these nanoparticles were successfully applied for the colorimetric sensing of Cr(VI) ions. The sensor achieved good performance for Cr(VI) sensing with detection limits of 0.012 μM (0.01-0.1 μM linear range) and 0.52 μM (0.05-12.5 μM linear range). The detection scheme was highly selective, and successfully applied for the detection of Cr(VI) in real water samples.

Published
2021
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6. Investigation of the structure of iron oxide nanoparticle assemblies in order to optimize the sensitivity of surface plasmon resonance-based sensors

Author

Grégory Barbillon, Mathias Dolci, Benoit P. Pichon, Cédric Leuvrey, Julien Moreau, Sylvie Begin-Colin, Jean-François Bryche, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Laboratoire Charles Fabry / Biophotonique, Laboratoire Charles Fabry (LCF), Institut d'Optique Graduate School (IOGS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Féminine-Sceaux 92330 (EPF), Institut Universitaire de France (IUF), and Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)

Subjects
Streptavidin, Materials science, Iron oxide, General Physics and Astronomy, Nanoparticle, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, chemistry.chemical_compound, Thin film, Surface plasmon resonance, ComputingMilieux_MISCELLANEOUS, chemistry.chemical_classification, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Biomolecule, Surface plasmon, Surfaces and Interfaces, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Surfaces, Coatings and Films, chemistry, 0210 nano-technology, Biosensor
Abstract

Surface plasmon resonance (SPR) biosensors based on metal thin films are very attractive for detection of biomolecules. Nanoparticle assemblies were recently demonstrated to significantly enhance sensitivity. Here, we show that the fine control of the structure of nanoparticle assemblies is critical to optimize the sensitivity. Iron oxide (Fe3-δO4) nanoparticles were assembled onto a gold thin film by performing the Copper Catalyzed Alkyne-Azide cycloaddition (CuAAC) “click” reaction. A biotin derivative was grafted by CuAAC at the surface of nanoparticle assemblies in order to detect streptavidin (SA). The fine control of the size and of the density of nanoparticles allowed tuning the surface plasmon waves at the surface of the gold thin film in order to optimize the response of the sensors. The accessibility of biotin at the nanoparticle surface to SA was also investigated as a function of the interparticle distance. We show that the interplay between the volume fraction of iron oxide and the accessibility of biotin at the nanoparticle surface is critical to enhance the sensitivity of SPR sensors.

Published
2020
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7. High-performance flexible hybrid supercapacitor based on NiAl layered double hydroxide as a positive electrode and nitrogen-doped reduced graphene oxide as a negative electrode

Author

Mathias Dolci, Alexandre Barras, Pascal Roussel, Rabah Boukherroub, Min Li, Sabine Szunerits, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, NanoBioInterfaces - IEMN (NBI - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), The authors gratefully acknowledge financial support from the Centre National de la Recherche Scientifique (CNRS), the University of Lille, and the Hauts-de-France region. Min Li thanks Chinese government for the China Scholarship Council fellowship., Renatech Network, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut d’Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520 (IEMN), Ecole Centrale de Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Laboratoire International associé sur les phénomènes Critiques et Supercritiques en électronique fonctionnelle, acoustique et fluidique (LIA LICS/LEMAC), Ecole Centrale de Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Ecole Centrale de Lille-Université de Lille-Université Polytechnique Hauts-de-France (UPHF)-Université Polytechnique Hauts-de-France (UPHF), Université de Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN], and Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Subjects
Nial, Materials science, General Chemical Engineering, Oxide, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010402 general chemistry, Electrochemistry, 7. Clean energy, 01 natural sciences, law.invention, chemistry.chemical_compound, law, NiAl LDHs, Carbon spheres, Nickel foam, Flexible supercapacitors, ComputingMilieux_MISCELLANEOUS, computer.programming_language, Supercapacitor, Graphene, Layered double hydroxides, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nickel, Chemical engineering, chemistry, Electrode, engineering, 0210 nano-technology, [CHIM.OTHE]Chemical Sciences/Other, computer
Abstract

International audience; Herein, we investigated the influence of Fe, Cr and Al incorporation in Ni-based layered double hydroxides (LDHs) supported on nickel foam (NF) electrodes, prepared through a one-step hydrothermal, on their electrochemical performance. The resulting NiFe, NiCr and NiAl (LDHs) were further coated on carbon spheres (CS) supported on NF using a facile two-step hydrothermal process to produce NiFe LDHs@CS/NF, NiCr LDHs@CS/NF and NiAl LDHs@CS/NF. The performance of the prepared materials as binder-free electrodes in supercapacitors was assessed. Among all the prepared electrodes, NiAl LDHs@CS/NF electrode material achieved the largest areal capacity (1042.2 mC cm−2 at 1 mA cm−2), as compared to the areal capacity values attained by NiFe LDHs@CS/NF (705.8 mC cm−2) and NiCr LDHs@CS/NF (814.9 mC cm−2) at 1 mA cm−2. Therefore, a hybrid supercapacitor device comprising NiAl LDHs@CS/NF as the positive electrode and N-doped reduced graphene/NF as the negative electrode was successfully fabricated. The device exhibited favorable flexibility, good mechanical properties and stability; the areal capacity remained ∼75% and ∼67% of the original value after 5000 and 10,000 cycles, respectively. The hybrid supercapacitor attained an energy density of 43 μWh cm−2 at a power density of 0.805 mW cm−2 and was applied successfully to operate a home-made windmill device continuously for 32 s. Moreover, two flexible NiAl LDHs@CS/NF//N-rGO/NF hybrid supercapacitors, connected in series, were able to light up a green, a red and a yellow LED in parallel, lasting for 37 s, 542 s and 199 s, respectively, indicating their potential application for flexible energy storage devices.

Published
2020
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8. Investigation of the Collective Properties in Monolayers of Exchange-Biased Fe3−δO4@CoO Core–Shell Nanoparticles

Author

Xiaojie Liu, Yu Liu, Sylvie Begin-Colin, Mathias Dolci, Dominique Begin, Elodie Pardieu, Alain Derory, Benoit P. Pichon, Cédric Leuvrey, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, [PHYS.PHYS]Physics [physics]/Physics [physics], Nanoparticle, Context (language use), 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Magnetic anisotropy, General Energy, Exchange bias, Chemical physics, Ferrimagnetism, 0103 physical sciences, Monolayer, Antiferromagnetism, Physical and Theoretical Chemistry, 010306 general physics, 0210 nano-technology, Anisotropy
Abstract

Owing to its potential to enhance the effective magnetic anisotropy energy of nanoparticles, exchange bias has been extensively studied during the last few years. Although most of studies have been conducted in the powder state, the effect of the dimensionality of nanoparticle assemblies has been scarcely investigated. In this context, we report on the study of the collective properties of monolayers of exchange-biased nanoparticles with different core–shell structures. Nanoparticles consist in a ferrimagnetic Fe3−δO4 core coated with an antiferromagnetic CoO shell. They were assembled in monolayers with local order by using the Langmuir–Blodgett technique. Exchange bias is significantly altered in 2D assemblies in comparison to powder samples which can be assimilated to 3D random assemblies. We show that exchange bias in Fe3−δO4@CoO nanoparticles is directly influenced by dipolar interactions between Fe3−δO4 cores, which are enhanced by shape anisotropy of 2D assemblies. Besides the dramatic influence of...

Published
2018
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9. Magneto-Optical Surface Plasmon Resonance Biosensors with Uni-Axial Magnetic Anisotropy

Author

Mathias Dolci, Xiaokun Ding, Yannick Dusch, Sabine Szunerits, Rabah Boukherroub, Philippe PERNOD, Nicolas Tiercelin, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN (AIMAN-FILMS - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), NanoBioInterfaces - IEMN (NBI - IEMN), ANR-17-CE09-0043,2DPS,Méta-surfaces à base de nanomatériaux 2D pour une détection plasmonique ultrasensible(2017), and Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA)

Subjects
[SPI]Engineering Sciences [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

10. NiMnCr layered double hydroxide-carbon spheres modified Ni foam: An efficient positive electrode for hybrid supercapacitors

Author

Rabah Boukherroub, Min Li, Pascal Roussel, Mu. Naushad, Sabine Szunerits, Mathias Dolci, Ahmed Addad, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), NanoBioInterfaces - IEMN (NBI - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, General Chemical Engineering, Composite number, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Industrial and Manufacturing Engineering, chemistry.chemical_compound, Environmental Chemistry, ComputingMilieux_MISCELLANEOUS, Supercapacitor, Layered double hydroxides, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nickel, chemistry, Chemical engineering, Electrode, engineering, Hydroxide, Nanorod, 0210 nano-technology, Carbon
Abstract

New electrode composite materials, consisting of NiMnCr layered double hydroxides (LDHs) coated on carbon spheres (CS) supported on nickel foam (NiMnCr LDHs@CS/NF), were synthesized using a two step hydrothermal process. The obtained binder-free NiMnCr LDHs@CS/NF composite was investigated as a positive electrode for supercapacitors and achieved a high specific capacity of 569 C g−1 at 3 A g−1; this value was ~6.5 times that of CS/NF (87.9 C g−1 at 3 A g−1) and ~3.3 times that of NiMnCr LDHs/NF composite (173.2 C g−1 at 3 A g−1). The NiMnCr LDHs@CS/NF composite retained ~76% of its original capacity after 10,000 cycles, much better than ~54% achieved by NiMnCr LDHs/NF composite, suggesting good reversibility and stability. Furthermore, a hybrid supercapacitor was fabricated using NiMnCr LDHs@CS/NF as the positive electrode and FeOOH nanorods deposited on NF (FeOOH/NF) as the negative electrode. The hybrid supercapacitor displayed an energy density of 48 Wh kg−1 at a power density of 402.7 W kg−1. A home-designed windmill device was successfully driven by the as-fabricated supercapacitor device for about 25 s. Additionally, two as-fabricated hybrid supercapacitor cells in series were used to light up a yellow LED and a red LED in parallel for ~111 s and ~343 s, respectively. Taken together, these results indicate that the developed electrodes hold a promising potential in energy storage application.

Published
2020
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11. Nanoparticle Assembling through Click Chemistry Directed by Mixed SAMs for Magnetic Applications

Author

Monica Calatayud, Delphine Toulemon, Mathias Dolci, J. L. Bubendorff, Zaineb Chaffar, Frederik Tielens, Sylvie Begin-Colin, Spyridon Zafeiratos, Benoit P. Pichon, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé (LCMCP-SMiLES), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Departement of General Chemistry (ALGC) (ALG), Université libre de Bruxelles (ULB), Laboratoire de chimie théorique (LCT), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), GENCI-[CCRT/CINES/IDRIS] (Grants 2016-[x2016082022] and 2017- x2017082131), CCRE of Université Pierre et Marie Curie, Direction générale de l’armement (DGA), Région Alsace, ANR-10-IDEX-0002,UNISTRA,Par-delà les frontières, l'Université de Strasbourg(2010), Laurent, Guillaume, Initiative d'excellence - Par-delà les frontières, l'Université de Strasbourg - - UNISTRA2010 - ANR-10-IDEX-0002 - IDEX - VALID, Chemistry, Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, Materials science, thiol molecule, theoretical modeling, Nanoparticle, Nanotechnology, collective properties, 02 engineering and technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, defect mediated replacement, click chemistry, Click chemistry, General Materials Science, structure, 0210 nano-technology, phase segregation
Abstract

International audience; "Click" chemistry, used to promote nanoparticle assemblies, is a powerful strategy which has emerged very recently to control the spatial arrangement of nanoparticles onto surfaces. Such a strategy may be of high interest for applications such as magnetic recording media or magnetic sensors which are based on the fine control of the collective properties of nanoparticles. Nevertheless, self-assembly driven by clickable functional groups still remains to be understood. Mixed self-assembled monolayers (SAMs) of alkane−thiol molecules were used to control the spatial arrangement of nanoparticles onto gold substrates. This approach was combined with click chemistry in order to control the immobilization of nanoparticles on selective areas through specific copper catalyzed alkyne−azide cycloaddition (CuAAC) reaction. Mixed SAMs consist of co-adsorbed 11-(undec-1-ynyl)thiol (S-CC) and 12-(dodecane)thiol (S-CH 3) molecules. The variation of the molar ratio between both molecules resulted in significant modulation of the structure of nanoparticle assemblies. The spatial arrangement of nanoparticles revealed the very complex structure of alkyne/methylene terminated mixed SAMs. Alkyne terminal groups could not be only studied by the usual characterization surface techniques such as PM-IRRAS and XPS. Therefore, azido-terminated nanoparticles acted as probing agents to determine the spatial distribution of alkyne groups at the surface of mixed SAMs. This approach was combined with scanning tunneling microscopy (STM) and DFT calculations to get a deeper insight into the structure of mixed SAMs of S-CC and S-CH 3 molecules. Gold substrate topography, chemical affinity of molecules, intermolecular interactions and length of alkyl chains were found to be critical parameters that rule the SAM structure.

Published
2019
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12. Robust clicked assembly based on iron oxide nanoparticles for a new type of SPR biosensor

Author

Mathias Dolci, Spyridon Zafeiratos, Jean-François Bryche, Simon Gree, Benoit P. Pichon, Cédric Leuvrey, Sylvie Begin-Colin, Grégory Barbillon, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institut d'électronique fondamentale (IEF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique

Subjects
chemistry.chemical_classification, Streptavidin, Materials science, High-refractive-index polymer, Biomolecule, Nanoparticle, Nanotechnology, 02 engineering and technology, General Chemistry, Dielectric, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Materials Chemistry, [CHIM]Chemical Sciences, Thin film, 0210 nano-technology, Biosensor, Iron oxide nanoparticles, ComputingMilieux_MISCELLANEOUS
Abstract

We present a novel strategy to create an original nanostructured SPR biosensor with enhanced sensitivity. Our approach consists of using high refractive index dielectric materials to increase the sensitivity factor of a gold thin film despite its large evanescent electromagnetic field decay lengths. Iron oxide nanoparticles were grafted onto a gold thin film and were easily functionalized by biomolecular receptors through a two step copper catalyzed alkyne–azide cycloaddition (CuAAC) “click” reaction. This strategy allowed us to prepare a highly stable and robust nanostructured biosensor. We selected the very-well known biotin–streptavidin couple to demonstrate the efficiency of our strategy toward the enhancement of the detection of biomolecules without using any labelling of the target molecules. High refractive index nanoparticles were demonstrated to enhance markedly the sensitivity to the detection of streptavidin by increasing the sensitivity factor of the gold thin film and the accessibility of biotin groups (reduction of steric hindrance).

Published
2018
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13. Exploring Exchange Bias Coupling in Fe3-O4@CoO Core-Shell Nanoparticle 2D Assemblies

Author

Xiaojie Liu, Mathias Dolci, Yu Liu, Dominique Begin, Alain Derory, Cédric Leuvrey, Sylvie Begin-Colin, Benoit P. Pichon, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Nanoparticle, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, [SPI.MAT]Engineering Sciences [physics]/Materials, Biomaterials, Coupling (electronics), Core shell, Magnetic anisotropy, Exchange bias, Chemical physics, Monolayer, Electrochemistry, Click chemistry, 0210 nano-technology
Abstract

Core-shell ferro(i)magnetic@antiferromagnetic (F(i)M@AFM) nanoparticles exhibiting exchange bias coupling are very promising to push back the superparamagnetic limits. However, their intrinsic magnetic properties can be strongly affected by interparticle interactions. This work reports on the collective properties of Fe3-dO4@CoO core-shell nanoparticles as function of the structure of their assembly. The structure of nanoparticle assembly is controlled by a copper (I) catalyzed alkyne-azide cycloaddition (CuAAC) click reaction between complementary functional groups located at the surface of both substrates and nanoparticles. 2D arrays of nanoparticles with tunable sizes ranging from clusters of few nanoparticles to a dense and homogenous monolayer were prepared. The spatial arrangement of nanoparticles strongly influences the exchange bias coupling which is significantly enhanced for large 2D nanoparticle assemblies and, even more in 3D assemblies such as powder, which favour weak and random dipolar interactions.

Published
2018
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14. Hybrid layer-by-layer composites based on a conducting polyelectrolyte and Fe 3 O 4 nanostructures grafted onto graphene for supercapacitor application

Author

Elodie Pardieu, Mathias Dolci, Sylvie Begin-Colin, Dominique Begin, Thierry Dintzer, Pierre Schaaf, Fouzia Boulmedais, Cuong Pham-Huu, Sergey Pronkin, Benoit P. Pichon, Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Biomatériaux et Bioingénierie (BB), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), and Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Supercapacitor, Materials science, Renewable Energy, Sustainability and the Environment, Graphene, Layer by layer, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Capacitance, 0104 chemical sciences, Dielectric spectroscopy, law.invention, PEDOT:PSS, law, General Materials Science, Cyclic voltammetry, Composite material, 0210 nano-technology, Hybrid material
Abstract

International audience; Using the layer-by-layer process, we developed a new and original ternary hybrid material based on magnetite iron oxide raspberry nanostructures, 250–300 nm in size, synthesized directly on few layer graphene (Fe3O4@FLG) alternated with conducting poly(3,4-ethylenedioxy thiophene):poly(styrene sulfonate) (PEDOT:PSS) as the electrode material for supercapacitors. Magnetite based nanostructures were used as electroactive materials. Graphene and PEDOT:PSS ensured the electrical conductivity. PEDOT:PSS also plays the role of a binder conferring cohesion to the hybrid material. Using spin-coating, the step-by-step buildup leads to very regular and well controlled film properties such as the film thickness and the content of iron oxide. The electrochemical properties of the so-obtained hybrid material were investigated in 0.5 M Na2SO3 aqueous electrolyte by cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry. In contradiction with the reported poor capacitance and poor cycling stability of iron oxide based supercapacitors, hybrid Fe3O4@FLG/PEDOT:PSS multilayers provide a high specific capacitance (153 F g−1 at 0.1 A g−1) and a high structural and cycling stability (114% retention after 3500 cycles). This hybrid developed system opens the route for even higher specific capacitance using other types of metal oxides.

Published
2015
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