copper related catalyst

Singh, Vivek published the artcilePrecursor to Gas Sensor: A Detailed Study of the Suitability of Copper Complexes as an MOCVD Precursor and their Application in Gas Sensing, Related Products of copper-catalyst, the publication is Inorganic Chemistry (2021), 60(22), 17141-17150, database is CAplus and MEDLINE.

There are very few p-type semiconductors available compared to n-type semiconductors for pos. sensing response for oxidizing gases and other important electronic applications. Cupric oxide (CuO) is one of the few oxides that show p-type conductivity, useful for sensing oxidizing gases. Many researchers obtained CuO using the chem. and solid-state routes, but uniformity and large-area deposition have been the main issues. Chem. vapor deposition is one such technique that provides control on several deposition parameters, which allow obtaining thin films having crystallinity and uniformity over a large area for the desired application. However, CuO-chem. vapor deposition (CVD) is still unfathomed due to the lack of suitability of copper precursors based on vapor pressure, contamination, and toxicity. Here, to address these issues, we have taken four Cu complexes (copper(II) acetylacetonate, copper(II) bis(2,2,6,6-tetramethyl-3,5-heptanedionato), copper(II) ethylacetoacetate, and copper(II) tert-butylacetoacetate), which are evaluated using thermogravimetry for suitability as a CVD precursor. The decomposition behavior of the complexes was also exptl. confirmed by depositing CuO thin films via CVD. Phase purity, decomposition, volatility, growth rate, and morphol. characteristics of the films are investigated in detail. Anal. suggests that copper(II) tert-butylacetoacetate has the highest vapor pressure and growth rate at a low temperature, making it the most suitable precursor for high-throughput CVD. Further, to investigate the role of these precursors, films deposited using Cu complexes were subjected to gas sensing. The CuO gas sensor fabricated on glass shows pronounced NO₂ sensing. The sensing results of CuO films have been explained from the standpoint of roughness, morphol., and unpassivated bonds present on the surface of films and vapor pressure of precursors. The higher d. of surface state and the lower resistivity of the Cu(tbaoac)₂ film lead to a sensor with higher responsivity and sensitivity (down to 1 ppm). These precursors can probably be utilized to improve the performance of other metal oxide gas sensors, especially Cu₂O and Cu-III-O₂.

Inorganic Chemistry published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is C24H29N5O3, Related Products of copper-catalyst.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Maurya, R. C. published the artcileMixed-ligand complexes of copper(II)-β-diketonate and β-diketoesters with heterocyclic nitrogen donors involving benzimidazole nucleus, Synthetic Route of 14284-06-1, the publication is Journal of the Institution of Chemists (India) (1997), 69(3), 89-91, database is CAplus.

A new series of mixed ligand complexes [Cu(L-L)₂L’₂] where L-L = acac, methylacetoacetate, ethylacetoacetate, and L’ = benzimidazole, 2-methylbenzimidazole were isolated in the solid state. The complexes were characterized by elemental anal.,molar conductance, magnetic measurements, TGA, ESR, electronic and IR spectral studies. A distorted octahedral structure is proposed for these complexes.

Journal of the Institution of Chemists (India) published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Synthetic Route of 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Kondratov, S. A. published the artcileCopper(II)-complex catalysis of ammonolysis of aromatic halogen derivatives, Name: Copper(II) ethylacetoacetate, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (1986), 52(8), 858-60, database is CAplus.

Cu(II) complexes with acetylacetone and Et acetoacetate catalyzed the ammonolysis of Na 2-bromobenzoate although Cu(OAc)₂, CuSO₄, and Cu diglycinate did not. Similar results were obtained for Na 4-bromobenzoate. Both Cu(II) salts and Cu(II) complexes catalyzed the ammonolysis of Na 1-amino-4-bromoanthraquinone-2-sulfonate, but here the real catalysts may have been Cu(II) compounds

Ukrainskii Khimicheskii Zhurnal (Russian Edition) published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Name: Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Kondratov, S. A. published the artcileKinetics and mechanism of the reaction of sodium 2-bromobenzoate with aqueous ammonia catalyzed by copper(II) 1,3-diketonates, Application of Copper(II) ethylacetoacetate, the publication is Kinetika i Kataliz (1987), 28(3), 573-8, database is CAplus.

The title reaction, with Cu acetylacetonate (I) or Cu bis(Et acetoacetate) (II) as catalyst, was 1st order in Na 2-bromobenzoate (III) and in catalyst. When I was used, the reaction was of fractional neg. order in NH₃; with II it was zero order in NH₃. The formation of complexes between III and the catalyst and an inactive NH₃-catalyst complex was discussed.

Kinetika i Kataliz published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Application of Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Kondratov, S. A. published the artcileCatalysis by copper complexes in the reaction of o-nitrochlorobenzene with ammonia, HPLC of Formula: 14284-06-1, the publication is Kinetika i Kataliz (1980), 21(5), 1232-7, database is CAplus.

π-Acceptor ligands having no reducing properties (e.g., 2,2′-bipyridine, 8-quinolinol) lower the catalytic activity of Cu²⁺ in the title reaction. π-Acceptor ligands with reducing properties (e.g., β-diketones, amino acids) reduce Cu²⁺ to Cu⁺ and cause a 15-20-fold increase in the initial rate, although reductive dechlorination occurs as a side reaction. Donor ligands (e.g., ethylenediamine) show a small effect on the activity of Cu²⁺. The title reaction in the presence of CuCl, Cu bis(acetylacetonate) (I) and Cu diglycinate (II) is 1st order in substrate and catalyst. In the case of I the reaction is 0.42 order in NH₃; in the case of II it is zero order in NH₃.

Kinetika i Kataliz published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, HPLC of Formula: 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Mukhopadhyay, Sukanya published the artcileMOCVD of copper films from bis(ethyl-3-oxo-butanoato)copper(II). Experiment and thermodynamic analysis, Safety of Copper(II) ethylacetoacetate, the publication is Proceedings – Electrochemical Society (2003), 1275-1283, database is CAplus.

Thin films of Cu were grown on SiO₂/Si(100) substrates by metalorganic chem. vapor deposition (MOCVD) using the precursor, bis(ethyl-3-oxo-butanoato)Cu(II), and characterized by x-ray diffraction and Auger electron spectroscopy. The anal.-determined composition of Cu films grown by chem. vapor deposition is found to match well with that predicted by thermodn. anal. based on the minimization of the total Gibbs free energy of the expected reaction products. This was based on an enumeration of reaction products using mass spectrometric anal. of the precursor and chem. reasoning. Such thermodn. anal. of metalorganic chem. vapor deposition processes can, therefore, be helpful in determining deposition conditions that yield films of desired quality.

Proceedings – Electrochemical Society published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Safety of Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Mane, Anil published the artcileCVD of thin films of copper and cobalt from different precursors: growth kinetics and microstructure, Synthetic Route of 14284-06-1, the publication is Materials Research Society Symposium Proceedings (2001), G6.11.1-G6.11.6, database is CAplus.

The authors have studied the growth of thin films of Cu and Co by CVD using the β-diketonate complexes of the metals, viz., the resp. acetylacetonates, dipivaloylmethanates, and ketocarboxylates. Film growth rate was measured as a function of CVD parameters such as substrate temperature and reactor pressure. Film microstructure was examined by optical microscopy, XRD, SEM, and STM. Elec. resistivity was measured as a function of temperature and film thickness. Film microstructure is a function of the mol. structure of the precursor and of the other growth parameters. For example, Cu films from Cu(II) ethylacetoacetate comprise uniform, fine grains which result in bulk elec. conductivity at a thickness ≥75nm. Though grown under nearly the same conditions, Cu films from Cu(II) dipivaloylmethanate are porous, with faceted, large crystallites. Co films from Co(II) acetylacetonate are x-ray amorphous even at a deposition temperature of 450°. It is possible, by choosing CVD parameters, to obtain metal films with microstructures appropriate to devices and to structures of very small dimensions.

Materials Research Society Symposium Proceedings published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Synthetic Route of 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Raman, N. published the artcileSynthesis, structural and antimicrobial activities of some phenylhydrazone derivatives of metal β-diketonates/β-ketoesters, Product Details of 0, the publication is Asian Journal of Chemistry (1997), 9(2), 183-186, database is CAplus.

Phenylhydrazone derivatives of Cu(II), Ni(II), Co(II) and Co(III) complexes of β-diketones/β-keto esters were prepared These complexes I [R¹ = R² = Me, M = Cu(II), Co(II); R¹ = OEt, R² = Me, M = Cu(II), Ni(II)] as well as a Co(III) tris(β-diketonate) complex were characterized by elemental analyses, IR, UV spectral data, molar conductance and magnetic susceptibility. The complexes exhibited antimicrobial activity against the gram-pos. Escherichia coli. The complexes had minimal inhibitory concentration (MIC) values < 10 μg/10 μL for their in vitro antifungal activity against candida albicans. The presence of an azomethine moiety and the chelation effect of the ligand with central metal atom enhance the antimicrobial activities.

Asian Journal of Chemistry published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Product Details of 0.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Fera, Daniela published the artcileIdentification and Characterization of Small Molecule Antagonists of pRb Inactivation by Viral Oncoproteins, Related Products of copper-catalyst, the publication is Chemistry & Biology (Oxford, United Kingdom) (2012), 19(4), 518-528, database is CAplus and MEDLINE.

The retinoblastoma protein pRb is essential for regulating many cellular activities through its binding and inhibition of E2F transcription activators, and pRb inactivation leads to many cancers. pRb activity can be perturbed by viral oncoproteins including human papillomavirus (HPV) that share an LxCxE motif. Because there are no treatments for existing HPV infection leading to nearly all cervical cancers and other cancers to a lesser extent, we screened for compounds that inhibit the ability of HPV-E7 to disrupt pRb/E2F complexes. This lead to the identification of thiadiazolidinedione compounds that bind to pRb with mid-high nanomolar dissociation constants, are competitive with the binding of viral oncoproteins containing an LxCxE motif, and are selectively cytotoxic in HPV-pos. cells alone and in mice. These inhibitors provide a promising scaffold for the development of therapies to treat HPV-mediated pathologies.

Chemistry & Biology (Oxford, United Kingdom) published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Related Products of copper-catalyst.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Mun, Yangun published the artcileMetal-containing initiator systems. XXXVI. Synthesis of block copolymer of methyl acrylate and α-methylbenzyl methacrylate with binary initiator system of cobaltocene and bis(ethyl acetoacetato)copper(II), COA of Formula: 0, the publication is Journal of Macromolecular Science, Chemistry (1984), A21(11-12), 1535-46, database is CAplus.

Block copolymerization of Me acrylate (I) and (DL)-α-methylbenzyl methacrylate (II) with a cobaltocene  [1277-43-6]-Cu(AcCH₂CO₂Et)₂  [14284-06-1] initiator system at 25° in MeCN was studied. The mol. weight of I polymer [9011-14-7] increased with time in the early stages of polymerization Although II polymer [25085-84-1] was also prepared, asym. selective polymerization was not induced by the presence of (-)-sparteine. I–II block copolymer [92542-26-2] was prepared in up to 90% yield. I–II block copolymer yield depended on the prepolymerization time of I with this system. The block copolymer was characterized by IR, NMR, and gel-permeation chromatog.

Journal of Macromolecular Science, Chemistry published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, COA of Formula: 0.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”