Synthesis and thermal conversions of unsaturated cobalt(II) dicarboxylates as precursors of metallopolymer nanocomposites

Семенов, С. А.; Дробот, Д. В.; Musatova, V. Yu.; Pronin, A. S.; Pomogailo, A. D.; Джардималиева, Г. И.; Попенко, В. И.

doi:10.1134/s0036023615080161

Cited by 14 publications

(3 citation statements)

References 14 publications

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“…In some cases, synthesis of Co 3 O 4 nanoparticles was accompanied by the formation of CoO or metallic cobalt as impurities. Pursuant to XRD results face-centered cubic (space group: F 3 3m) [23], monoclinic (space group: C2/m) [23] and tetragonal [9] crystal systems were reported.…”

Section: Structure and Characterization Of Coo Nanoparticlesmentioning

confidence: 99%

“…The "carboxylate" term includes several organic species that contain at least one carboxyl group, such as oxalate, citrate, etc. Methods for synthesis of cobalt-carboxylates include (i) sol-gel [2,4], (ii) intimate mixing of cobalt ions [6][7][8], (iii) precipitation [9,10], (iv) hot oxidation-redox reaction [11], (v) ball milling [12] and (vi) microemulsion [13]. Reaction of cobalt acetate with a carboxylic acid, for example, leads directly to the synthesis of cobalt-carboxylate, when the carboxylic acid in question is stronger than acetic acid: Co(Ac) 2 + RCOOH → Co(RCOO) 2 + 2 AcH (1).…”

Section: Cobalt and Cobalt Oxide Nanoparticles From Carboxylatesmentioning

confidence: 99%

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Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Smyrnioti¹,

Ioannides²

2017

Cobalt

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Development of efficient and low-cost methods for the production of cobalt and cobalt oxide nanoparticles is of great interest. Such nanoparticles are typically prepared via transformation of precursors under controlled conditions. In the case of organic precursors, the production of said nanoparticles takes place through thermal decomposition of the organic moiety. The decomposition pathway of the precursor is greatly dependent on the type (i.e. inert, reducing or oxidizing) of the gaseous atmosphere prevailing during heating, as well as on the heating schedule itself. The characteristics of the organic group have also an important influence on the structure of the final material. The goal of the current work is to present a comprehensive review of the research work focusing on the synthesis of cobalt-based nanomaterials from activation of organic precursors.

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Section: Structure and Characterization Of Coo Nanoparticlesmentioning

confidence: 99%

Section: Cobalt and Cobalt Oxide Nanoparticles From Carboxylatesmentioning

confidence: 99%

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Smyrnioti¹,

Ioannides²

2017

Cobalt

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“…Although several metal containing-monomers with unsaturated carboxylates exhibit valuable antimicrobial and antitumor properties, none were studied in order to generate polymers, so this research direction represents an open field for scientists. There are several reports concerning the polymerization of such compounds, but this process is performed at higher temperatures when complex decomposition occurs, resulting in either nano-oxide or nanometal particles [104,105]. It may be considered that a polymerization method in mild conditions should perhaps be developed for such species in order to preserve the core of the coordination compound.…”

Section: Further Perspectivesmentioning

confidence: 99%

Coordinative Compounds Based on Unsaturated Carboxylate with Versatile Biological Applications

Vasile Scaeteanu,

Badea,

Olar

2024

Molecules

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This review presents an overview of the biological applications of coordinative compounds based on unsaturated carboxylates accompanied by other ligands, usually N-based heterocyclic species. The interest in these compounds arises from the valuable antimicrobial and antitumor activities evidenced by some species, as well as from their ability to generate metal-containing polymers suitable for various medical purposes. Therefore, we describe the recently discovered aspects related to the synthesis, structure, and biological activity of a wide range of unsaturated carboxylate-containing species and metal ions, originating mostly from 3d series. The unsaturated carboxylates encountered in coordinative compounds are acrylate, methacrylate, fumarate, maleate, cinnamate, ferulate, coumarate, and itaconate. Regarding the properties of the investigated compounds, it is worth mentioning the good ability of some to inhibit the development of resistant strains or microbial biofilms on inert surfaces or, even more, exert antitumor activity against resistant cells. The ability of some species to intercalate into DNA strands as well as to scavenge ROS species is also addressed.

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Conjugated Thermolysis of Metal Chelate Monomers Based on Cobalt Acrylate Complexes with Polypyridyl Ligands and Tribological Performance of Nanomaterials Obtained

et al. 2018

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Over the last decades, conjugated thermolysis of metal chelate monomers (MCMs) has been widely used to produce various metal and metal oxide nanostructures. In the present study, a detailed analysis of the conjugate thermolysis of MCM based on cobalt(II) acrylate (Acr) complexes with 2,2′‐bipyridine (bpy) and 1,10‐phenanthroline (phen) was carried out. The main stages and kinetics features of conjugated thermolysis of MCMs are estimated. Metal‐polymer nanocomposites containing metal nanoparticles (NPs) uniformly distributed in a stabilizing nitrogen‐containing polymer matrix and Co3O4 NPs are obtained depending on the conditions of conjugated thermolysis. The composition, structure and properties of the nanomaterials obtained were studied using X‐ray diffraction (XRD), IR spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDS) and thermal analysis (TA). Analysis of Co3O4 NPs as lubricant additives was carried out in the perspective of their tribological behavior using a pin‐on‐disc tribometer. At an optimum concentration of NPs, the coefficient of friction is the lowest. When the level of NPs increases above the optimum level, the coefficient of friction increases. With an increase in the load to 196 N, the coefficient of friction decreases with increasing concentration.

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Synthesis and thermal conversions of unsaturated cobalt(II) dicarboxylates as precursors of metallopolymer nanocomposites

Cited by 14 publications

References 14 publications

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Synthesis of Cobalt-Based Nanomaterials from Organic Precursors

Coordinative Compounds Based on Unsaturated Carboxylate with Versatile Biological Applications

Conjugated Thermolysis of Metal Chelate Monomers Based on Cobalt Acrylate Complexes with Polypyridyl Ligands and Tribological Performance of Nanomaterials Obtained

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