Tag: 200-300

In 2022,Omoregie, Helen Oluwatola; Eseola, Abiodun Omokehinde; Akong, Raymond Akong published an article in Journal of Molecular Structure. The title of the article was 《Mixed ligand complexes of copper(II) with benzoyltrifluoroacetone, 1,10-phenanthroline and 2,2′-bipyridine: Structure, spectroscopic and antimicrobial properties》.Quality Control of Cupric bromide The author mentioned the following in the article:

Mixed ligand copper(II) complexes of Benzoyltrifluoroacetone (BTAH) with 1,10-phenanthroline (Phen) and 2,2′-bipyridine (Bipy) were synthesized and characterized. These complexes, namely [Cu(BTA)(Phen)(NO3)] (1), [Cu(BTA)(Phen)Cl] (2), [Cu(BTA)(Bipy)(NO3)] (3), [Cu(BTA)(Bipy)Cl] (4), and [Cu(BTA)(Phen)Br]•H2O (5), were characterized by elemental anal.; spectral; magnetic and molar conductance measurements; mass spectrometry; thermal anal. and antimicrobial susceptibility testing. The structures of 1 and 4 contained square pyramidal copper(II) environments. The microbiostatic activity revealed that the copper complexes showed pronounced activity in all the tested bacteria, except in Klebsiella pneumonia, Escherichia coli and Salmonella enterica in which some of the complexes were moderately active on the bacterial strains. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9Quality Control of Cupric bromide) was used in this study.

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Quality Control of Cupric bromide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

《Hollow PtCu octahedral nanoalloys: Efficient bifunctional electrocatalysts towards oxygen reduction reaction and methanol oxidation reaction by regulating near-surface composition》 was written by Chen, Guorong; Yang, Xiaotong; Xie, Zixuan; Zhao, Fengling; Zhou, Zhiyou; Yuan, Qiang. Related Products of 13395-16-9 And the article was included in Journal of Colloid and Interface Science in 2020. The article conveys some information:

In response to the scarcity of precious metals, the development of precious-metal-saving electrocatalysts exhibiting high mass activity (MA) and durability towards oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) for both proton-exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) has aroused increasing attention. In this study, octahedral Cu-rich PtCu alloy is seeded to fabricate near-surface composition-tunable PtCu hollow octahedral nanoparticles (HONs) with the wall thickness of ∼2.1 nm. Due to both the alloying effects of near surface and the special hollow octahedral structure, the PtCu/C HONs exhibit significantly higher MA and durability than com. Pt/C towards both ORR in alk. medium and MOR in sulfuric acid electrolyte. The ORR MA of Pt44.1Cu55.9/C HONs are up to 2.60 A mg-1Pt that is 18.5-fold enhancement compared with that of Pt/C. Besides, after 10,000 voltage cycles, the MA of Pt44.1Cu55.9/C HONs remains to be 1.61 A mg-1Pt, a datum 53.7 times that of Pt/C. The in situ CO polarization curves exhibit that the Pt44.1Cu55.9 HONs/C own high resistance to CO poisoning. For MOR in sulfuric acid electrolyte, the optimum SA/MA of PtCu/C HONs is 5.33 mA cm-2/1.94 A mg-1Pt, which is 10.25/5.87 times higher than that of Pt/C. This study provides effective bifunctional cathode and anode electrocatalysts for both PEMFCs and DMFCs. The experimental part of the paper was very detailed, including the reaction process of Bis(acetylacetone)copper(cas: 13395-16-9Related Products of 13395-16-9)

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.Related Products of 13395-16-9

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

In 2019,Russian Journal of Physical Chemistry A included an article by Koledina, K. F.; Gubaidullin, I. M.; Koledin, S. N.; Baiguzina, A. R.; Gallyamova, L. I.; Khusnutdinov, R. I.. Product Details of 7789-45-9. The article was titled 《Kinetics and Mechanism of the Synthesis of Benzylbutyl Ether in the Presence of Copper-Containing Catalysts》. The information in the text is summarized as follows:

The reaction of the synthesis of benzylbutyl ether via the intermol. dehydration of benzyl and Bu alcs. under the action of copper-containing catalysts is studied by math. means. The mechanism of the reaction was proposed, and the values of kinetic parameters are determined A comparative anal. of the activation energies of possible stages of chem. conversions is performed, and possible routes of the reactions and the catalytic cycles of reactions are determined Variations in stage rates and the concentrations of all substances participating in the reaction are analyzed. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Product Details of 7789-45-9)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Product Details of 7789-45-9

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

In 2019,Macromolecular Chemistry and Physics included an article by Zaborniak, Izabela; Chmielarz, Pawel. Application In Synthesis of Cupric bromide. The article was titled 《Temporally Controlled Ultrasonication-Mediated Atom Transfer Radical Polymerization in Miniemulsion》. The information in the text is summarized as follows:

Due to the increasing requirement for more environmentally and industrially relevant approaches in macromols. synthesis, ultrasonication-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is applied for the first time to obtain precisely defined poly(Bu acrylate) (PBA) and poly(Me methacrylate) (PMMA) homopolymers, and poly(Bu acrylate)-block-poly(tert-Bu acrylate) (PBA-b-PtBA) and poly(Bu acrylate)-block-poly(Bu acrylate) (PBA-b-PBA) copolymers. It is demonstrated in the reaction setup with strongly hydrophilic catalyst copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) responsible for two principal mechanisms – interfacial and ion-pair catalysis reflecting single-catalyst approach. This solution turns out to be an excellent tool in controlled preparation of well-defined polymers with narrow mol. weight distribution (up to ETH = 1.28) and preserves chain-end functionality (DCF = 0.02% to 0.32%). Temporal control over the polymer chain growth is successfully conducted by turning the ultrasonication on/off. Taking into consideration long OFF stage (92.5 h) during ultrasonication-induced polymerization in miniemulsion, synthesis is efficiently reinitiated without any influence on controlled characteristics maintaining the precise structure of received PBA homopolymers, confirmed by narrow mol. weight distribution (ETH = 1.26) and high retention of chain-end functionality (DCF = 0.01%). This procedure constitutes an excellent simple and eco-friendly approach in preparation of functional polymeric materials.Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide) was used in this study.

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Application In Synthesis of Cupric bromide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

COA of Formula: C10H16CuO4In 2020 ,《Thermoelasticity of Flexible Organic Crystals from Quasi-harmonic Lattice Dynamics: The Case of Copper(II) Acetylacetonate》 was published in Journal of Physical Chemistry Letters. The article was written by Maul, Jefferson; Ongari, Daniele; Moosavi, Seyed Mohamad; Smit, Berend; Erba, Alessandro. The article contains the following contents:

A computationally affordable approach, based on quasi-harmonic lattice dynamics, is presented for the quantum-mech. calculation of thermoelastic moduli of flexible, stimuli-responsive, organic crystals. The methodol. relies on the simultaneous description of structural changes induced by thermal expansion and strain. The complete thermoelastic response of the mech. flexible metal-organic Cu(II) acetylacetonate crystal is determined and discussed in the temperature range 0-300 K. The elastic moduli do not just shrink with temperature but they do so anisotropically. The present results clearly indicate the need for an explicit account of thermal effects in the simulation of mech. properties of elastically flexible organic materials. Indeed, predictions from standard static calculations on this flexible metal-organic crystal are off by up to 100%. In the experiment, the researchers used many compounds, for example, Bis(acetylacetone)copper(cas: 13395-16-9COA of Formula: C10H16CuO4)

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.COA of Formula: C10H16CuO4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Li, Menggang; Zhao, Zhonglong; Xia, Zhonghong; Luo, Mingchuan; Zhang, Qinghua; Qin, Yingnan; Tao, Lu; Yin, Kun; Chao, Yuguang; Gu, Lin; Yang, Weiwei; Yu, Yongsheng; Lu, Gang; Guo, Shaojun published an article in 2021. The article was titled 《Exclusive Strain Effect Boosts Overall Water Splitting in PdCu/Ir Core/Shell Nanocrystals》, and you may find the article in Angewandte Chemie, International Edition.Recommanded Product: 13395-16-9 The information in the text is summarized as follows:

Core/shell nanocatalysts are a class of promising materials, which achieve the enhanced catalytic activities through the synergy between ligand effect and strain effect. However, it has been challenging to disentangle the contributions from the two effects, which hinders the rational design of superior core/shell nanocatalysts. Herein, we report precise synthesis of PdCu/Ir core/shell nanocrystals, which can significantly boost oxygen evolution reaction (OER) via the exclusive strain effect. The heteroepitaxial coating of four Ir at. layers onto PdCu nanoparticle gives a relatively thick Ir shell eliminating the ligand effect, but creates a compressive strain of ca. 3.60%. The strained PdCu/Ir catalysts can deliver a low OER overpotential and a high mass activity. D. functional theory (DFT) calculations reveal that the compressive strain in Ir shell downshifts the d-band center and weakens the binding of the intermediates, causing the enhanced OER activity. The compressive strain also boosts hydrogen evolution reaction (HER) activity and the strained nanocrystals can be served as excellent catalysts for both anode and cathode in overall water-splitting electrocatalysis. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: 13395-16-9)

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.Recommanded Product: 13395-16-9

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Liu, Youxing; Wei, Yanan; Liu, Minghui; Bai, Yichao; Liu, Guocai; Wang, Xinyu; Shang, Shengcong; Gao, Wenqiang; Du, Changsheng; Chen, Jianyi; Liu, Yunqi published an article in 2021. The article was titled 《Two-Dimensional Metal-Organic Framework Film for Realizing Optoelectronic Synaptic Plasticity》, and you may find the article in Angewandte Chemie, International Edition.COA of Formula: C10H16CuO4 The information in the text is summarized as follows:

2D metal-organic framework (MOF) film as the active layer show promising application prospects in various fields including sensors, catalysis, and electronic devices. However, exploring the application of 2D MOF film in the field of artificial synapses has not been implemented yet. In this work, we fabricated a novel 2D MOF film (Cu-THPP, THPP=5,10,15,20-Tetrakis(4-hydroxyphenyl)-21H,23H-porphine), and further used it as an active layer to explore the application in the simulation of human brain synapses. It shows excellent light-stimulated synaptic plasticity properties, and exhibits the foundation function of synapses such as long-term plasticity (LTP), short-term plasticity (STP), and the conversion of STP to LTP. Most critically, the MOF based artificial synaptic device exhibits an excellent stability in atm. This work opens the door for the application of 2D MOF film in the simulation of human brain synapses. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9COA of Formula: C10H16CuO4)

Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. COA of Formula: C10H16CuO4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

《Enhanced oxygen reduction activity of PtCu nanoparticles by morphology tuning and transition-metal doping》 was published in International Journal of Hydrogen Energy in 2020. These research results belong to Wu, Dengfeng; Yang, Yang; Dai, Changqing; Cheng, Daojian. Formula: C10H16CuO4 The article mentions the following:

Developing active and durable electrocatalysts for oxygen reduction reaction (ORR) is of great significance in proton exchange membrane fuel cells (PEMFCs). Herein, a facile strategy is developed to synthesize PtCu nanoparticles with enhanced ORR performance through morphol. tuning and transition-metal doping. Two distinct PtCu nanoparticles, namely nanooctahedrons (NOs) and nanospheres (NSs), are selectively synthesized in presence or absence of W(CO)6 via a facile one-pot method. Furthermore, by introducing a small amount of third transition metal, M-doped (M = Sc, Y, La, Gd, Fe) PtCu NOs are obtained. Electrocatalytic results suggest that the ORR performance of PtCu NOs is better than that of PtCu NSs due to the morphol. advantages. And the ORR performance of PtCuM NOs is further promoted since the doping effect of transition metals compared to that of PtCu NOs. Particularly, PtCuSc NOs exhibit remarkable mass activity (1.652 mA μg-1Pt) and specific activity (2.093 mA cm-2), which are 9.9 and 7.2 times higher than that of com. Pt/C catalysts at 0.8 V (vs. RHE). Moreover, after accelerated stability tests, the loss of mass activity for PtCuSc NOs is only 9.2%, which is much lower than that of PtCu NOs (16.5%) and com. Pt/C (44.3%). This work provides a feasible idea to boost the ORR performances of Pt-based nanoparticles. The experimental process involved the reaction of Bis(acetylacetone)copper(cas: 13395-16-9Formula: C10H16CuO4)

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.Formula: C10H16CuO4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The author of 《Thermodynamic modeling of the solubility of acetylacetonate-type metal precursors in supercritical carbon dioxide using the PC-SAFT equation of state》 were Ushiki, Ikuo; Sato, Yoshiyuki; Takishima, Shigeki; Inomata, Hiroshi. And the article was published in Journal of Chemical Engineering of Japan in 2019. Related Products of 13395-16-9 The author mentioned the following in the article:

Thermodn. modeling of the solubilities of various acetylacetonate-type metal precursors in supercritical carbon dioxide was performed using the PC-SAFT (perturbed-chain statistical associating fluid theory) equation of state. Pure component parameters for the metal precursors (segment number, segment diameter, and dispersion energy) were determined by fitting to solubility data obtained from the literature. The PC-SAFT equation of state could correlate the literature data over wide temperature and pressure ranges for various precursors. The pure component PC-SAFT parameters obtained from these correlations were found to vary systematically with changes in the properties of the metal precursors, such as the molar masses of the precursors and of the metal centers, which could be generalized based on the phys. meaning of each parameter. The generalized PC-SAFT parameters could reproduce the solubilities of the metal precursors in supercritical carbon dioxide to within 30% average relative deviation under almost all conditions, especially at temperature below 393 K. The results came from multiple reactions, including the reaction of Bis(acetylacetone)copper(cas: 13395-16-9Related Products of 13395-16-9)

Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. Related Products of 13395-16-9

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Safety of Cupric bromideIn 2020 ,《Synthesis of sugar-based macromolecules via sono-ATRP in miniemulsion》 was published in Polymers for Advanced Technologies. The article was written by Zaborniak, Izabela; Surmacz, Karolina; Chmielarz, Pawel. The article contains the following contents:

Ultrasound-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is used for the first time for the preparation of complex macromol. architectures by a facile two-step synthetic route. Initially, esterification reaction of sucrose or lactulose with α-bromoisobutyryl bromide (BriBBr) is conducted to receive multifunctional ATRP macroinitiators with 8 initiation sites, followed by polymerization of Bu acrylate (BA) forming arms of the star-like polymers. The brominated lactulose-based mol. was examined as an ATRP initiator by determining the activation rate constant (ka) of the catalytic process in the presence of a copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) catalyst in both organic solvent and for the first time in miniemulsion media, resulting in ka = (1.03 ± 0.01) × 104 M-1s-1 and ka = (1.16 ± 0.56) × 103 M-1s-1, resp. Star-like macromols. with a sucrose or lactulose core and poly(Bu acrylate) (PBA) arms were successfully received using different catalyst concentration Linear kinetics and a well-defined structure of synthesized polymers reflected by narrow mol. weight distribution (Mw/Mn = 1.46) indicated 105 ppm weight of catalyst loading as concentration to maintain controlled manner of polymerization process. 1H NMR anal. confirms the formation of new sugar-inspired star-shaped polymers. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Safety of Cupric bromide)

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Safety of Cupric bromide

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”