Synthesis, Structural Properties and Complex Corrosion Inhibition Cu (II) With Amino Acid (DL-a-Alanine)

Gharda, N.; Galai, M.; Saqalli, L.; Ouakki, M.; Habbadi, Nouzha; Ghailane, Rachida; Souizi, Abdelaziz; Touhami, M. Ebn; Peres-Lucchese, Yolande

doi:10.13005/ojc/330410

Cited by 14 publications

(2 citation statements)

References 23 publications

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“…Therefore, a pH of ∼10 is essential to ensure that both these groups are deprotonated, hence available for complexing with Cu(II) ions supplied from the precursor. Upon addition of l -alanine to Cu(II), a light blue solution is formed, which turns into an intense deep blue color when the pH is gradually increased to 10, resulting in the formation of a bidentate complex with l -alanine . Subsequently, upon introducing l -ascorbic acid into the reaction mixture, copper is gradually reduced to Cu(I) and finally to Cu(0).…”

Section: Resultsmentioning

confidence: 99%

Low-Temperature Sintering of l-Alanine-Functionalized Metallic Copper Particles Affording Conductive Films with Excellent Oxidative Stability

Pereira

Killalea

Amabilino

2022

ACS Appl. Electron. Mater.

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Here, the alpha amino acid l -alanine is employed as both a capping and stabilizing agent in the aqueous synthesis of submicron-sized metallic copper particles under ambient atmospheric conditions. The reduction of the copper(II) precursor is achieved using l -ascorbic acid (vitamin C) as the reducing agent. The nature of the complex formed between l -alanine and the copper(II) precursor, pH of the medium, temperature, and the relative proportion of capping agent are found to play a significant role in determining the size, shape, and oxidative stability of the resulting particles. The adsorbed l -alanine is shown to act as a barrier imparting excellent thermal stability to capped copper particles, delaying the onset of temperature-induced aerial oxidation. The stability of the particles is complemented by highly favorable sintering conditions, rendering the formation of conductive copper films at significantly lower temperatures ( T ≤ 120 °C) compared to alternative preparation methods. The resulting copper films are well-passivated by residual surface l -alanine molecules, promoting long-term stability without hindering the surface chemistry of the copper film as evidenced by the catalytic activity. Contrary to the popular belief that ligands with long carbon chains are best for providing stability, these findings demonstrate that very small ligands can provide highly effective stability to copper without significantly deteriorating its functionality while facilitating low-temperature sintering, which is a key requirement for emerging flexible electronic applications.

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Section: Resultsmentioning

confidence: 99%

Low-Temperature Sintering of l-Alanine-Functionalized Metallic Copper Particles Affording Conductive Films with Excellent Oxidative Stability

Pereira

Killalea

Amabilino

2022

ACS Appl. Electron. Mater.

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“…The study of amino acid metal complexes is becoming an interesting field in recent times as they consider environmentally friendly due to their chemical and physical properties . These complexes have a wide range of applications such antimicrobials, anti‐breast cancer, corrosion inhibitors and catalysts . The catalytic behavior of these chelates was studied for oxidation organic compounds which considered eco‐friendly, nontoxic catalyst.…”

Section: Introductionmentioning

confidence: 99%

Nano‐sized metal complexes of azo L‐histidine: Synthesis, characterization and their application for catalytic oxidation of 2‐amino phenol

El-Wakiel

2018

Applied Organom Chemis

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A novel azo dye ligand formed by the coupling of L-histidine with 2-hydroxy-1naphthaldyhide(H 2 L) and its Ru 3+ , Pd 2+ and Ni 2+ nano-sized complexes were obtained and described by elemental analysis, TGA, magnetic moment measurements, molar conductance, UV-Vis, ESR, X-ray powder diffraction, IR, SEM, TEM, 1 H-nmr, 13 C-nmr, and EI-mass spectral studies. The analytical results and spectral studies detected that the H 2 L ligand acts as dibasic tetradentate via aldehyde oxygen, azo nitrogen and deprotonated OH and COOH groups. The data showed the paramagnetic Ru 3+ complex has octahedral geometry while Pd 2+ and Ni 2+ have square planar structures. The molar conductance measurements display all complexes are nonelectrolyte. The crystallinity, morphology and average particle size data revealed the prepared complexes were formed in the Nano scale. The average particle size as calculated from TEM images are found to be 13.72, 64.52 and 115.00 nm for Ru 3+ , Pd 2+ and Ni 2+ chelates, respectively. The catalytic activities of these compounds were checked for oxidation of 2-amino phenol to 2-amino-3Hphenoxazine-3-one as heterogeneous catalysts. A 96, 31 and 21% catalytic conversion are found when using Ru(III), Pd(II) and Ni(II) complexes respectively.

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Enantioselective inorganic nanomaterials with near-infrared circular-polarized-activated photothermal response

Wang

et al. 2023

Chemical Engineering Journal

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Synthesis, Structural Properties and Complex Corrosion Inhibition Cu (II) With Amino Acid (DL-a-Alanine)

Cited by 14 publications

References 23 publications

Low-Temperature Sintering of l-Alanine-Functionalized Metallic Copper Particles Affording Conductive Films with Excellent Oxidative Stability

Low-Temperature Sintering of l-Alanine-Functionalized Metallic Copper Particles Affording Conductive Films with Excellent Oxidative Stability

Nano‐sized metal complexes of azo L‐histidine: Synthesis, characterization and their application for catalytic oxidation of 2‐amino phenol

Enantioselective inorganic nanomaterials with near-infrared circular-polarized-activated photothermal response

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