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Panicker S, Ahmady IM, Almehdi AM, Workie B, Sahle-Demessie E, Han C, Chehimi MM, Mohamed AA. Gold-Aryl nanoparticles coated with polyelectrolytes for adsorption and protection of DNA against nuclease degradation. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4803] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ahmad AAL, Panicker S, Chehimi MM, Monge M, Lopez-de-Luzuriaga JM, Mohamed AA, Bruce AE, Bruce MRM. Synthesis of water-soluble gold–aryl nanoparticles with distinct catalytic performance in the reduction of the environmental pollutant 4-nitrophenol. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01402k] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In-depth kinetic insight into the catalytic reduction of nitrophenol pollutant using gold–carbon nanoparticles is described.
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Mohamed AA, Neal SN, Atallah B, AlBab ND, Alawadhi HA, Pajouhafsar Y, Abdou HE, Workie B, Sahle-Demessie E, Han C, Monge M, Lopez-de-Luzuriaga JM, Reibenspies JH, Chehimi MM. Synthesis of gold organometallics at the nanoscale. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.07.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Jacques A, Saad A, Chehimi MM, Poleunis C, Delcorte A, Delhalle J, Mekhalif Z. Nitinol Modified by In Situ Generated Diazonium Salts as Adhesion Promoters for Photopolymerized Pyrrole. ChemistrySelect 2018. [DOI: 10.1002/slct.201802209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Jlassi K, Radwan AB, Sadasivuni KK, Mrlik M, Abdullah AM, Chehimi MM, Krupa I. Anti-corrosive and oil sensitive coatings based on epoxy/polyaniline/magnetite-clay composites through diazonium interfacial chemistry. Sci Rep 2018; 8:13369. [PMID: 30190528 PMCID: PMC6127100 DOI: 10.1038/s41598-018-31508-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/10/2018] [Indexed: 11/16/2022] Open
Abstract
Epoxy polymer nanocomposites filled with magnetite (Fe3O4) clay (B), named (B-DPA-PANI@Fe3O4) have been prepared at different filler loading (0.1, 0.5, 1, 3, 5 wt. %). The surface modification of clay by polyaniline (PANI) is achieved in the presence of 4-diphenylamine diazonium salt (DPA). The effects of the nanofiller loading on Tensile, mechanical and dielectric properties were systematically studied. Improved properties was highlighted for all reinforced samples. The addition of only 3 wt. % of the filler enhanced the tensile strength of the composites by 256%, and the glass transition temperature Tg by 37%. The dielectric spectra over a broad frequency showed a robust interface between the hybrid (B-DPA-PANI@Fe3O4) fillers and epoxy matrix. The results showed most significant improvement in corrosion inhibition using electrochemical impedance spectroscopy (EIS) in 3.5 wt % NaCl, as well as a significant response in oil sensing test. High charge transfer resistance of 110 × 106 Ω.cm2 using 3-wt % of filler was noted compared to 0.35 × 106 Ω.cm2 for the pure epoxy. The results obtained herein will open new routes for the preparation of efficient anticorrosion sensor coatings.
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Lo M, Diaw AKD, Gningue-Sall D, Aaron JJ, Oturan MA, Chehimi MM. Tracking metal ions with polypyrrole thin films adhesively bonded to diazonium-modified flexible ITO electrodes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:20012-20022. [PMID: 29744780 DOI: 10.1007/s11356-018-2140-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Adhesively bonded polypyrrole thin films doped with benzene sulfonic acid (BSA) were electrodeposited on aminobenzenediazonium-modified flexible ITO electrodes and further employed for the detection of Pb2+, Cu2+, and Cd2+ metal ions in aqueous medium. The aminophenyl (AP) adhesive layer was grafted to ITO by electroreduction of the in situ generated parent diazonium compound. Polypyrrole (PPy) thin films exhibited remarkable adhesion to aminophenyl (ITO-AP). The strongly adherent polypyrrole films exhibited excellent electroactivity in the doped state with BSA which itself served to chelate the metal ions in aqueous medium. The surface of the resulting, modified flexible electrode was characterized by XPS, SEM, and electrochemical methods. The ITO-AP-PPy electrodes were then used for the simultaneous detection of Cu2+, Cd2+, and Pb2+ by differential pulse voltammetry (DPV). The detection limits were 11.1, 8.95, and 0.99 nM for Cu2+, Cd2+, and Pb2+, respectively. In addition, the modified electrodes displayed a good reproducibility, making them suitable for the determination of heavy metals in real wastewater samples.
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Snoussi Y, Bastide S, Abderrabba M, Chehimi MM. Sonochemical synthesis of Fe 3O 4@NH 2-mesoporous silica@Polypyrrole/Pd: A core/double shell nanocomposite for catalytic applications. ULTRASONICS SONOCHEMISTRY 2018; 41:551-561. [PMID: 29137786 DOI: 10.1016/j.ultsonch.2017.10.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 10/22/2017] [Accepted: 10/22/2017] [Indexed: 05/18/2023]
Abstract
There is a growing interest in sonochemistry for either the controlled design of nanostructured materials or for the synthesis of polymers and polymer composites. It is fast and highly efficient method that provides materials with exceptional and enhanced structural and chemical properties. Herein, we take advantage of the versatile sonochemical process in order to design core/double layered shell nanocomposite denoted by Fe3O4@NH2-mesoporous silica@ PPy/Pd. This magnetic, multicomponent material was designed in a three-step sono-process: (i) synthesis of magnetic core, (ii) cure of mesoporous silica, and (iii) sonochemical deposition of PPy/Pd. This last step was achieved within 1 h, a much shorter duration compared to conventional routes which usually take several hours to few days. The final nanocomposite can be recovered with a simple magnetic stick. X-ray diffraction patterns highlighted the presence of zerovalent palladium on the surface of the magnetic nanocomposite. The catalytic activity of the solid support was investigated by the study of the p-nitrophenol (p-NP) reduction and the Methyl Orange (MO) degradation in aqueous media. Results showed a very high catalytic efficiency, a high conversion yield of p-NP into 4-aminophenol (more than 94%) and an almost entire degradation of MO (99%) with a fast kinetics fitting to the first order model. This work demonstrates conclusively the benefits of sonochemistry in the design of metal nanoparticle-decorated inorganic/polymer hybrid system with outstanding performances.
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Hamouma O, Oukil D, Omastová M, Chehimi MM. Flexible paper@carbon nanotube@polypyrrole composites: The combined pivotal roles of diazonium chemistry and sonochemical polymerization. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Gosecka M, Chehimi MM, Basinska T, Slomkowski S, Makowski T. Adsorption and covalent binding of fibrinogen as a method for probing the chemical composition of poly(styrene/α-tert-butoxy-ω-vinylbenzyl-polyglycidol) microsphere surfaces. Colloids Surf B Biointerfaces 2017; 160:438-445. [DOI: 10.1016/j.colsurfb.2017.09.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 09/21/2017] [Accepted: 09/24/2017] [Indexed: 11/24/2022]
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Abid M, Bouattour S, Ferraria AM, Conceição DS, Carapeto AP, Vieira Ferreira LF, Botelho do Rego AM, Chehimi MM, Rei Vilar M, Boufi S. Facile functionalization of cotton with nanostructured silver/titania for visible-light plasmonic photocatalysis. J Colloid Interface Sci 2017; 507:83-94. [DOI: 10.1016/j.jcis.2017.07.109] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/21/2017] [Accepted: 07/28/2017] [Indexed: 11/15/2022]
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Saad A, Cabet E, Lilienbaum A, Hamadi S, Abderrabba M, Chehimi MM. Polypyrrole/Ag/mesoporous silica nanocomposite particles: Design by photopolymerization in aqueous medium and antibacterial activity. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.09.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Belbekhouche S, Kebe SI, Mahouche-Chergui S, Guerrouache M, Carbonnier B, Jaziri M, Chehimi MM. Aryl diazonium-modified olive waste: A low cost support for the immobilization of nanocatalysts. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Chehimi MM, Pigois-Landureau E, Delamar M. Characterization of conducting polymers by inverse gas chromatography. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1992891173] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Msaadi R, Ammar S, Chehimi MM, Yagci Y. Diazonium-based ion-imprinted polymer/clay nanocomposite for the selective extraction of lead (II) ions in aqueous media. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guselnikova OA, Postnikov PS, Fitl P, Tomecek D, Sajdl P, Elashnikov R, Kolska Z, Chehimi MM, Švorčík V, Lyutakov O. Tuning of PEDOT:PSS Properties Through Covalent Surface Modification. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24282] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gosecka M, Slomkowski S, Basinska T, Chehimi MM. Size-Controlled 3D Colloidal Crystals Formed in an Aqueous Suspension of Polystyrene/Polyglycidol Microspheres with Covalently Bound l-DOPA. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12848-12855. [PMID: 27802044 DOI: 10.1021/acs.langmuir.6b03497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Stable three-dimensional colloidal crystals were fabricated in an aqueous suspension of Tris buffer at pH > 8. The basic building blocks of the crystals were submicron-sized polystyrene-polyglycidol core-shell particles (Dn(SEM) = 270 ± 18 nm) with covalently bound 3,4-dihydroxyphenylalanine (l-DOPA). The growth of the crystals was triggered by a thermodynamically favorable arrangement of particles leading to their close packing and by the formation of covalent cross-links between the individual particles. Under alkaline conditions, molecules of l-DOPA are oxidized, which allows their participation in cross-linking, necessary for the stabilization of the formed colloidal crystals. The average size of the fabricated colloidal crystals is determined by their weight, density of the suspending medium, and the energy of their Brownian motion. Crystals generated during the suspension of particles fall down after reaching the critical weight. Therefore, crystals of similar dimensions are deposited at the bottom of the vessel. The described system is the first example of the formation of stable colloidal crystals in a suspension.
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Sandomierski M, Strzemiecka B, Chehimi MM, Voelkel A. Reactive Diazonium-Modified Silica Fillers for High-Performance Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11646-11654. [PMID: 27726385 DOI: 10.1021/acs.langmuir.6b02891] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe a simple way of modification of three silica-based fillers with in situ generated 4-hydroxymethylbenzenediazonium salt (+N2-C6H4-CH2OH). The rationale for using a hydroxyl-functionalized diazonium salt is that it provides surface-functionalized fillers that can react with phenolic resins. The modification of silica by diazonium salts was assessed using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). FTIR spectroscopy permitted the tracking of benzene ring breathing and C-C. The absence of the characteristic N≡N stretching vibration in the 2200-2300 cm-1 range indicates the loss of the diazonium group. XPS results indicate a higher C/Si atomic ratio after the diazonium modification of fillers and the presence of π-π* C1s satellite peaks characteristic of the surface-tethered aromatic species. Adhesion of aryl layers to the silicas is excellent because they withstand harsh thermal and organic solvent treatments. Phenolic resins (used, for example, as binders in abrasive products) were filled with diazonium-modified silicas at 10-25 wt %. The reactivity of the fillers toward phenolic resins was evaluated by the determination of the flow distance. After annealing at 180 °C, the diazonium-modified silica/phenolic resin composites were mechanically tested using the three-point flexural method. The flexural strength was found to be up to 35% higher than that of the composites prepared without any diazonium salts. Diazonium-modified silica with surface-bound -CH2-OH groups is thus ideal reactive filler for phenolic resins. Such filler ensures interfacial chemical reactions with the matrix and imparts robust mechanical properties to the final composites. This specialty diazonium-modified silica will find potential application as fillers in the composites for the abrasive industry. More generally, aryl diazonium salts are a unique new series of compounds for tailoring the surface properties of fillers and tuning the physicochemical and mechanical properties of polymer composites.
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Bakas I, Yilmaz G, Ait-Touchente Z, Lamouri A, Lang P, Battaglini N, Carbonnier B, Chehimi MM, Yagci Y. Diazonium salts for surface-confined visible light radical photopolymerization. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28241] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Saad A, Abderrabba M, Chehimi MM. X-ray induced degradation of surface bound azido groups during XPS analysis. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.6113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Varenne F, Botton J, Merlet C, Vachon JJ, Geiger S, Infante IC, Chehimi MM, Vauthier C. Erratum to “Standardization and validation of a protocol of zeta potential measurements by electrophoretic light scattering for nanomaterial characterization” [Colloids Surf. A: Physicochem. Eng. Aspects 486 (2015) 218–231]. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.02.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ayadi H, Mekhalif T, Salmi Z, Carbonnier B, Djazi F, Chehimi MM. Molecularly imprinted PVC beads for the recognition of proteins. J Appl Polym Sci 2016. [DOI: 10.1002/app.43694] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Jlassi K, Chandran S, Poothanari MA, Benna-Zayani M, Thomas S, Chehimi MM. Clay/Polyaniline Hybrid through Diazonium Chemistry: Conductive Nanofiller with Unusual Effects on Interfacial Properties of Epoxy Nanocomposites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3514-24. [PMID: 26963747 DOI: 10.1021/acs.langmuir.5b04457] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The concept of conductive network structure in thermoset matrix without sacrificing the inherent mechanical properties of thermoset polymer (e.g., epoxy) is investigated here using "hairy" bentonite fillers. The latter were prepared through the in situ polymerization of aniline in the presence of 4-diphenylamine diazonium (DPA)-modified bentonite (B-DPA) resulting in a highly exfoliated bentonite-DPA/polyaniline (B-DPA/PANI). The nanocomposite filler was mixed with diglycidyl ether of bisphenol A (DGEBA), and the curing agent (4,4'-diaminodiphenylsulfone) (DDS) at high temperature in order to obtain nanocomposites through the conventional melt mixing technique. The role of B-DPA in the modification of the interface between epoxy and B-DPA/polyaniline (B-DPA/PANI) is investigated and compared with the filler B/PANI prepared without any diazonium modification of the bentonite. Synergistic improvement in dielectric properties and mechanical properties points to the fact that the DPA aryl groups from the diazonium precursor significantly modify the interface by acting as an efficient stress transfer medium. In DPA-containing nanocomposites, unique fibril formation was observed on the fracture surface. Moreover, dramatic improvement (210-220%) in fracture toughness of epoxy composite was obtained with B-DPA/PANI filler as compared to the weak improvement of 20-30% noted in the case of the B/PANI filler. This work shows that the DPA diazonium salt has an important effect on the improvement of the interfacial properties and adhesion of DGEBA and clay/PANI nanofillers.
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Mekki A, Ait-Touchente Z, Samanta S, Singh A, Mahmoud R, Chehimi MM, Aswal DK. Polyaniline-Wrapped ZnO Nanorod Composite Films on Diazonium-Modified Flexible Plastic Substrates. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201500430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Msaadi R, Gharsalli A, Mahouche-Chergui S, Nowak S, Salmi H, Carbonnier B, Ammar S, Chehimi MM. Reactive and functional clay through UV-triggered thiol-ene interfacial click reaction. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.5925] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Salmi-Mani H, Ait-Touchente Z, Lamouri A, Carbonnier B, Caron JF, Benzarti K, Chehimi MM. Diazonium salt-based photoiniferter as a new efficient pathway to clay–polymer nanocomposites. RSC Adv 2016. [DOI: 10.1039/c6ra14713e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Diazonium salts were used to prepare clay–polymer nanocomposites by living free radical photopolymerization of glycidyl methacrylate. The resulting intercalated nanocomposites have an organic mass loading of ∼41 wt% and a polymer-rich surface.
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