Electrografting of stainless steel by the diazonium salt of 4-aminobenzylphosphonic acid

Le, Xuan Tuan; Zeb, Gul; Jégou, Pascale; Berthelot, Thomas

doi:10.1016/j.electacta.2012.03.076

Cited by 26 publications

(38 citation statements)

References 33 publications

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“…While the spectrum of the pristine one presents a typical behavior of TiN substrate with a small peak of unavoidable carbon contamination, 1,27 an increase in the intensity of the C1s peak clearly indicates the presence of an organic layer on the modified surface. 28 Indeed, TiN substrate is contaminated by organic materials containing COO (288.3 eV), C-O (286.2 eV) and C-C (284.6 eV) ( Figure 2). With respect to the functionalized surface, the C peak of C-C bonds at 284.6 eV increases significantly as a phenyl layer was grafted on the surface.…”

Section: Spontaneous Grafting Of Aminophenylene Film Onto Tin Surfacementioning

confidence: 99%

“…Notwithstanding the low intensity, this weak C 1s signal is, however, really important as it was interpreted in the literature as an evidence of the covalent metal-carbon bond between the metal surface and phenyl groups grafted through the diazonium route. 26,28,29 Indeed, bringing out the proof of covalent bonding between the substrates and the grafted layers is still an open subject within the field of organic coating through diazonium chemistry. 26,28,[30][31][32][33] The C 1s peak found at around 283.0 ± 0.5 eV which corresponds to a carbide carbon was reported to be a direct proof for the existence of a covalent bond between aryl group and different substrates, e.g., iron, 29 nickel, 26 and stainless steel.…”

Section: Spontaneous Grafting Of Aminophenylene Film Onto Tin Surfacementioning

confidence: 99%

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On the chemical grafting of titanium nitride by diazonium chemistry

et al. 2015

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Current research directions with the aim of extending the applications of titanium nitride (TiN) in areas of microelectronics, electrocatalysis, biosensors etc. require identifying new and efficient methods to modify this durable material with desired organic functionalities. We have clearly demonstrated in this work that diazonium chemistry can be considered for surface modification of titanium nitride. Indeed, a near-monolayer of aminophenylene has been reported to be spontaneously grafted onto the TiN surface by simple immersion of the substrates into an acidic solution of the corresponding diazonium cations. X-ray photoelectron spectroscopy measurements strongly suggested a covalent coating of aminophenyl groups on titanium nitride. Surface functionalization with aminophenylene layers was also investigated in presence of hypophosphorous acid and iron powder. Effect of these homogeneous and heterogeneous reducing agents with respect to the formation of aryl layers at different thicknesses was discussed in detail on the basis of conventional hemolytic dediazoniation mechanism in combination with the XPS results.The reduction of diazonium cations can be achieved by different ways such as electrochemical reduction, ultrasonication, photochemistry, microwave heating etc.

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Section: Spontaneous Grafting Of Aminophenylene Film Onto Tin Surfacementioning

confidence: 99%

Section: Spontaneous Grafting Of Aminophenylene Film Onto Tin Surfacementioning

confidence: 99%

On the chemical grafting of titanium nitride by diazonium chemistry

et al. 2015

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“…The C-M component was previously reported to be a direct proof for the existence of a covalent bond between the aryl group and different substrates (i.e. iron 48 and stainless steel 49 ).…”

Section: +/2+mentioning

confidence: 97%

Surface modification of CoCr alloys by electrochemical reduction of diazonium salts

et al. 2018

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“…15 In this work, we exploited electrodeposition to functionalize stainless steel and provide support for the subsequent covalent attachment of the active material. 16,17 Modification of stainless steel The reaction occurred in water in which the starting diazonium salt is soluble. As in previous reports on the electrografting of diazonium salts, 13,14,18 a small negative potential on the first scan (0.04 V vs. SCE) identifies the one electron reduction potential.…”

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confidence: 99%

“…15 In this work, we exploited electrodeposition to functionalize stainless steel and provide support for the subsequent covalent attachment of the active material. 16,17 Modification of stainless steel In order to form an OH layer on the surface via a sustainable and easily accessible method, a layer of p-diazonium salt of † Electronic supplementary information (ESI) available: General procedures; methods and materials; description of experiments. See…”

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A contact active bactericidal stainless steel via a sustainable process utilizing electrodeposition and covalent attachment in water

et al. 2015

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A contact active bactericidal stainless steel was synthesized in water utilizing phenol electrodeposition, followed by covalent attachment of quaternary ammonium salts. The approach minimizes the amount of the antimicrobial agent and avoids its release into the environment. Gram negative and Gram positive bacteria were inactivated upon contact with the modified surface.Bacterial build up on steel surfaces is a serious problem in a number of industries, including food storage and processing devices, medical instruments, and ship hulls. 1 Contact active antimicrobial materials provide a new, promising approach for reducing bacterial adhesion and proliferation. 2,3 The approach involves a durable (usually covalent) linkage of an antimicrobial moiety to a material's surface. Unlike superhydrophobic surfaces that do not allow for the attachment of bacteria and have proven to be an elegant solution in some recent reports, 4 contact active materials can be used in applications where the physical elimination of pathogens is necessary. Being surface linked, the antimicrobial agent is not readily released into the bulk material that would be in contact with the coated surfaces, and is not released into the environment. The modified materials often retain their antimicrobial activity after multiple usages. In addition, the approach minimizes the amount of active material needed to achieve antimicrobial protection. Due to these environmental and operational advantages that satisfy an important green chemistry criterion, contact active antimicrobial materials are of high research and applicative interest for their possible use in a large number of innovative and non-toxic products. 5,6 Quaternary ammonium salts (QAS) have long been recognized as a general solution for disrupting the membranes of a large range of bacteria. 7 Their attachment to surfaces is a strategy for the synthesis of non-leaching antibacterial materials that minimize both the evolution of bacterial resistance and mammalian toxicity. 8 Recently, a number of techniques were developed for conferring antibacterial activity to stainless steel. 9 However, usually such modifications require expensive substrates such as peptides or hyperbranched polymers, a good number of steps to synthesize and/or attach the active substrate, and the use of organic solvents. Activation of stainless steel by non-synthetic methods was also reported. 10,11 For instance, an interesting report on creating QAS surfaces on steel with cold plasma led to excellent antimicrobial activity, however several modification steps were required. 10 An additional interesting approach suggested a vapour polymerization of active materials. 11 In the present report, we aimed at conferring antibacterial activity to steel by surface modification with QAS, with as few synthetic steps as possible that utilized water as the solvent in order to address cost and environmental concerns, thus satisfying a green chemistry criterion in industrial applications. 12 The QAS salt can be modified with a trialkoxysily...

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Electrografting of stainless steel by the diazonium salt of 4-aminobenzylphosphonic acid

Cited by 26 publications

References 33 publications

On the chemical grafting of titanium nitride by diazonium chemistry

On the chemical grafting of titanium nitride by diazonium chemistry

Surface modification of CoCr alloys by electrochemical reduction of diazonium salts

A contact active bactericidal stainless steel via a sustainable process utilizing electrodeposition and covalent attachment in water

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