Compact Metal–Organic Frameworks for Anti‐Corrosion Applications: New Binary Linear Saturated Carboxylates of Zinc

Mesbah, Adel; Jacques, S.; Rocca, Emmanuel; François, Michel; Steinmetz, J.

doi:10.1002/ejic.201001024

Cited by 44 publications

(23 citation statements)

References 24 publications

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“…The diffractogram was measured in step mode from 1 ı to 40 ı , 2™ (step size: 0.02 ı , count time: 1 s). A single set of long spacing lines, mid-way between those of zinc palmitate and zinc stearate were obtained, consistent with the published data for this compound (Mesbah et al 2011).…”

Section: Discussionsupporting

confidence: 80%

Section: Ftirmentioning

confidence: 99%

“…It has been shown that when a 1:1 mixture of palmitic acid and stearic acid react to form a zinc salt, the binary salt Zn(C16)(C18) is thermodynamically favoured and will form (Mesbah et al 2011). This binary salt has a bridging bidentate structure in which each zinc atom is coordinated to two C16 carboxylate ions and two C18 carboxylate ions (Mesbah et al 2011). When the palmitate-stearate ratio is greater than one, a mixture of zinc palmitate Zn(C16) 2 and a binary salt of the general formula Zn(C16) 2x (C18) 2 2x is formed (where x represents the relative amounts of stearic and palmitic acid available for reaction; x D 0 for pure stearic acid and x D 1 for pure palmitic acid).…”

Section: Ftirmentioning

confidence: 99%

“…The polymeric sheets are stacked perpendicular to the longer axis and linked by Van der Waals interactions. The distance between the zinc atom planes (also called the interlayer distance) has been found to increase linearly with chain length (Mesbah et al 2011). The crystal symmetry and stacking of the lamellar sheets varies, depending on the length of the hydrocarbon chain (Mesbah et al 2007).…”

Section: Introductionmentioning

confidence: 97%

See 3 more Smart Citations

Conservation Issues in Several Twentieth-Century Canadian Oil Paintings: The Role of Zinc Carboxylate Reaction Products

Helwig¹,

Poulin²,

Corbeil³

et al. 2014

Issues in Contemporary Oil Paint

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In an on-going study of the materials and techniques of twentieth-century Canadian painters, similar conservation issues in oil paintings by various artists have been noted. These include delamination and lifting paint, zinc soap protrusions and surface efflorescence or accretions. Examples of these phenomena are presented. Delamination in an oil painting from 1956 was found to be related to an underlayer with a high concentration of zinc fatty acid salts (zinc soaps). In two paintings that date from 1936 and 1937, zinc soaps have aggregated and formed protrusions that have broken through the paint surface. The protrusions were analysed using a combination of SEM-EDX, GCMS and FTIR. The FTIR spectra were compared to those of synthetic zinc palmitate, stearate, azelate and oleate. The combined GCMS and FTIR results indicate that the protrusions contain primarily zinc palmitate and stearate. Peak splitting in the FTIR spectrum, which is not observed in synthetic zinc palmitate, stearate or binary palmitate-stearate salts, is likely due to structural distortion. The final example describes a disfiguring surface accretion on a 1952-1954 painting caused by the reaction of zinc with a low molecular weight carboxylic acid (2-hydroxypropanoic or lactic acid).

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Section: Discussionsupporting

confidence: 80%

Section: Ftirmentioning

confidence: 99%

Section: Ftirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Conservation Issues in Several Twentieth-Century Canadian Oil Paintings: The Role of Zinc Carboxylate Reaction Products

Helwig¹,

Poulin²,

Corbeil³

et al. 2014

Issues in Contemporary Oil Paint

View full text Add to dashboard Cite

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“…Although less attention has been focused on this topic, hydrophobic MOFs have showed potential in the anticorrosion of metals when they are grown on metallic surfaces. [285] Zhang et al reported the coating of a Zn-Al alloy with a layer of ZIF-90 crystals, which improved the corrosion resistance of the Zn-Al alloy in a 3.5 wt% NaCl aqueous solution. [286] The ZIF-90 film was prepared by placing a Zn-Al sheet in the solvothermal reaction solution for ZIF-90.…”

Section: Anticorrosionmentioning

confidence: 99%

Hydrophobic Metal–Organic Frameworks: Assessment, Construction, and Diverse Applications

et al. 2020

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Tens of thousands of metal–organic frameworks (MOFs) have been developed in the past two decades, and only ≈100 of them have been demonstrated as porous and hydrophobic. These hydrophobic MOFs feature not only a rich structural variety, highly crystalline frameworks, and uniform micropores, but also a low affinity toward water and superior hydrolytic stability, which make them promising adsorbents for diverse applications, including humid CO2 capture, alcohol/water separation, pollutant removal from air or water, substrate‐selective catalysis, energy storage, anticorrosion, and self‐cleaning. Herein, the recent research advancements in hydrophobic MOFs are presented. The existing techniques for qualitatively or quantitatively assessing the hydrophobicity of MOFs are first introduced. The reported experimental methods for the preparation of hydrophobic MOFs are then categorized. The concept that hydrophobic MOFs normally synthesized from predesigned organic ligands can also be prepared by the postsynthetic modification of the internal pore surface and/or external crystal surface of hydrophilic or less hydrophobic MOFs is highlighted. Finally, an overview of the recent studies on hydrophobic MOFs for various applications is provided and suggests the high versatility of this unique class of materials for practical use as either adsorbents or nanomaterials.

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Design and synthesis of novel thiourea metal complexes with controllable antibacterial properties

Rakhshani

Rezvani

Dušek

et al. 2018

Applied Organom Chemis

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A new bidentate O,S donor thiourea ligand (L 1 ), namely N-(2-hydroxyethyl)-N′-2-chlorobenzoylthiourea, and its oxazolidine derivative (L 2 ) were synthesized.Derivative L 2 was used for the preparation of Ni(L 2 ) 2 and Cu(L 2 ) 2 complexes. The compounds were investigated using X-ray crystallography and Fourier transform infrared, 1 H NMR and UV-visible spectroscopies. Single-crystal Xray analysis showed strong hydrogen bonding interactions between carbonyl oxygen and N(10) ─ H in the L 1 ligand. In addition, the antibacterial activities of these compounds were evaluated against Gram-positive and Gram-negative bacteria, measured using the colony count method. The Cu(L 2 ) 2 complex exhibited a significant antibacterial activity while the activity of the other compounds was much lower. Finally, the relationship between the structure and antibacterial properties of these compounds was investigated using highest occupied and lowest unoccupied molecular orbital energies calculated by density functional theory method based on the 6-31G*/LANL2DZ basis set.

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Compact Metal–Organic Frameworks for Anti‐Corrosion Applications: New Binary Linear Saturated Carboxylates of Zinc

Cited by 44 publications

References 24 publications

Conservation Issues in Several Twentieth-Century Canadian Oil Paintings: The Role of Zinc Carboxylate Reaction Products

Conservation Issues in Several Twentieth-Century Canadian Oil Paintings: The Role of Zinc Carboxylate Reaction Products

Hydrophobic Metal–Organic Frameworks: Assessment, Construction, and Diverse Applications

Design and synthesis of novel thiourea metal complexes with controllable antibacterial properties

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