Tag: 200-300

Application of 7789-45-9In 2019 ,《Controlled Growth of Ultra-Thick Polymer Brushes via Surface-Initiated Atom Transfer Radical Polymerization with Active Polymers as Initiators》 appeared in Macromolecular Rapid Communications. The author of the article were Zeng, Yiyang; Xie, Lei; Chi, Fangting; Liu, Dejian; Wu, Haoyan; Pan, Ning; Sun, Guangai. The article conveys some information:

Polymer brushes exhibit functionalities useful for a large number of applications. Often these functionalities only emerge when the polymer brushes have a desired thickness. Here, a significant breakthrough is achieved in the synthesis of ultra-thick polymer brushes using polymer initiators in the approach of surface-initiated atom transfer radical polymerization, yielding polymer brushes with a controllable thickness up to 15.1 μm. This is reportedly the thickest polymer brush ever synthesized. This approach is applicable for several monomers such as acrylonitrile, Me acrylate, and styrene, and for other types of polymer substrates such as fibers. In the experiment, the researchers used many compounds, for example, Cupric bromide(cas: 7789-45-9Application 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.Application of 7789-45-9

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

Pesesse, Antoine; Carenco, Sophie published an article in 2021. The article was titled 《Influence of the copper precursor on the catalytic transformation of oleylamine during Cu nanoparticle synthesis》, and you may find the article in Catalysis Science & Technology.Application In Synthesis of Bis(acetylacetone)copper The information in the text is summarized as follows:

For optimal use of copper nanoparticles in catalysis, in-depth understanding of the reaction mechanisms and fine characterization of final products are equally relevant. Indeed, both have a direct impact on the nanoparticle core and surface. So far, most insights come from characterization techniques focusing on the inorganic component, i.e. the nanoparticle core. Mol. techniques are often overlooked and the reactions alongside the reduction of the copper precursor are not properly understood. Such understanding is mandatory to properly interpret the nanoparticle behavior in catalytic processes. Here, copper nanoparticle synthesis was studied by thorough characterization of the organic reactions happening during the synthesis, quant. by 1H NMR and qual. by infra-red spectroscopy (IR) and electrospray ionisation-mass spectrometry (ESI-MS). The reduction of copper(II) acetate (Cu(OAc)2) by oleylamine resulted in a high amount of water and few byproducts while the reduction of copper(II) acetylacetonate (Cu(acac)2) resulted in a low amount of water and many products. The resulting nanoparticles showed different abilities to further dehydrogenate and transaminate oleylamine in the synthesis reaction pot. This was explained by the presence of a copper oxide phase in the nanoparticles prepared from copper acetate. In the experiment, the researchers used Bis(acetylacetone)copper(cas: 13395-16-9Application In Synthesis of Bis(acetylacetone)copper)

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.Application In Synthesis of Bis(acetylacetone)copper

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

Li, Jiaxiong; Ren, Chao; Sun, Zhijian; Ren, Yanjuan; Lee, Haksun; Moon, Kyoung-sik; Wong, Ching-Ping published an article in 2021. The article was titled 《Melt Processable Novolac Cyanate Ester/Biphenyl Epoxy Copolymer Series with Ultrahigh Glass-Transition Temperature》, and you may find the article in ACS Applied Materials & Interfaces.SDS of cas: 13395-16-9 The information in the text is summarized as follows:

The rapid progress in silicon carbide (SiC)-based technol. for high-power applications expects an increasing operation temperature (up to 250°C) and awaits reliable packaging materials to unleash their full power. Epoxy-based encapsulant materials failed to provide satisfactory protection under such high temperatures due to the intrinsic weakness of epoxy resins, despite their unmatched good adhesion and processability. Herein, we report a series of copolymers made by melt blending novolac cyanate ester and tetramethylbiphenyl epoxy (NCE/EP) that have demonstrated much superior high-temperature stability over current epoxies. Benefited from the aromatic, rigid backbone and the highly functional nature of the monomers, the highest values achieved for the copolymers are as follows: glass-transition temperature (Tg) above 300°C, decomposition onset above 400°C, and char yield above 45% at 800°C, which are among the highest of the known epoxy chem. by far. Moreover, the high-temperature aging (250°C) experiments showed much reduced mass loss of these copolymers compared to the traditional high-temperature epoxy and even the pure NCE in the long term by suppressing hydrolysis degradation mechanisms. The copolymer composition, i.e., NCE to EP ratio, has found to have profound impacts on the resin flowability, thermomech. properties, moisture absorption, and dielec. properties, which are discussed in this paper with in-depth anal. on their structure-property relationships. The outstanding high-temperature stability, preferred and adjustable processability, and the dielec. properties of the reported NCE/EP copolymers will greatly stimulate further research to formulating robust epoxy molding compounds (EMCs) or underfill for packaging next-generation high-power electronics. In the experiment, the researchers used Bis(acetylacetone)copper(cas: 13395-16-9SDS of cas: 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. SDS of cas: 13395-16-9

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

《Low Pt-Content Ternary PtNiCu Nanoparticles with Hollow Interiors and Accessible Surfaces as Enhanced Multifunctional Electrocatalysts》 was written by Wu, Dengfeng; Zhang, Wei; Lin, Aijun; Cheng, Daojian. Category: copper-catalyst And the article was included in ACS Applied Materials & Interfaces in 2020. The article conveys some information:

Developing highly active and durable electrocatalysts with low levels of Pt content toward some crucial reactions including O reduction reaction, H evolution reaction, and MeOH oxidation reaction in an acidic electrolyte environment are desirable but still an open challenge for clean and efficient energy conversion. Herein, the authors present a facile route to synthesize low Pt-content ternary PtNiCu nanostructures with hollow interior and accessible surfaces (H-PtNiCu-AAT NPs) as enhanced multifunctional electrocatalysts. The galvanic replacement reaction and at. diffusion between in situ preformed CuNi nanocrystals and Pt species should be responsible for the formation of hollow PtNiCu NPs. Continuous activation by acid picking and annealing treatments were performed to leach out the excessive Cu and Ni on the surfaces and to enrich Pt-content on the surface. H-PtNiCu-AAT NPs exhibit excellent activity and durability toward HER, ORR, and MOR due to the rational integration of multiple structural advantages. Strikingly, the mass activity and specific activity of H-PtNiCu-AAT NPs (0.977 A mgPt-1 and 1.458 mA cm-2) is 7.1 and 6.9 times higher than that of com. Pt/C (0.138 A mgPt-1 and 0.212 mA cm-2) toward ORR at 0.9 V (vs. RHE), resp. This present work provides an efficient strategy for the design of low Pt-content trimetallic electrocatalysts with excellent activity and durability. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Category: copper-catalyst)

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.Category: copper-catalyst

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

《Promoting Effects of Au Submonolayer Shells on Structure-Designed Cu-Pd/Ir Nanospheres: Greatly Enhanced Activity and Durability for Alkaline Ethanol Electro-Oxidation》 was written by Luo, Liuxuan; Fu, Cehuang; Yan, Xiaohui; Shen, Shuiyun; Yang, Fan; Guo, Yangge; Zhu, Fengjuan; Yang, Lijun; Zhang, Junliang. Related Products of 13395-16-9 And the article was included in ACS Applied Materials & Interfaces in 2020. The article conveys some information:

Rationally engineering the surface physicochem. properties of nanomaterials can improve their activity and durability for various electrocatalytic and energy conversion applications. Cu-Pd/Ir (CPI) nanospheres (NSs) anchored on N-doped porous graphene (NPG) [(CPI NSs/NPG)] have been recently demonstrated as a promising electrocatalyst for the alk. ethanol oxidation reaction (EOR); to further enhance their electrocatalytic performance, the NPG-supported CPI NSs are coated with Au submonolayer (SML) shells (SMSs), through which their surface physicochem. properties can be tuned. CPI NSs/NPG is prepared by the previously developed method and possesses the special structures of composition-graded Cu1Pd1 and surface-doped Ir0.03. The Au SMSs with designed surface coverages are formed via an electrochem. technol. involving incomplete Cu underpotential deposition (UPD) and Au3+ galvanic replacement. A distinctive volcano-type relation between the EOR electrocatalytic activity and the Au-SMS surface coverage for CPI@AuSML NSs/NPG is revealed, and the optimal CPI@Au1/6ML NSs/NPG greatly surpasses com. Pd/C and CPI NSs/NPG in electrocatalytic activity and noble metal utilization. More importantly, its electrocatalytic durability in 1 h chronoamperometric and 500-cycle potential cycling degradation tests is also significantly improved. According to detailed physicochem. characterizations, electrochem. analyses, and d. functional theory calculations, the promoting effects of the Au SMS for enhancing the EOR electrocatalytic activity and durability of CPI NSs/NPG can be mainly attributed to the greatly weakened carbonaceous intermediate bonding and properly increased surface oxidation potential. This work also proposes a versatile and effective strategy to tune the surface physicochem. properties of metal-based nanomaterials via incomplete UPD and metal-cation galvanic replacement for advancing their electrocatalytic and energy conversion performance. 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) 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,Inorganic Chemistry Communications included an article by Beloglazkina, Elena K.; Yudina, Anna V.; Pasanaev, Egor A.; Salimova, Irina A.; Tafeenko, Viktor A.; Mironov, Andrei V.; Moiseeva, Anna A.; Pergushov, Vladimir I.; Zyk, Nikolai V.; Majouga, Alexander G.. Electric Literature of C10H16CuO4. The article was titled 《Binuclear copper complexes with CuICuI and Cu+1.5Cu+1.5 core structures formed in the reactions of 3-(2-methylbutyl)-5-pyridylmethylene-2-thiohydantoin with copper(II) acetylacetonate and copper(II) chloride》. The information in the text is summarized as follows:

A treatment of the ligands, 3-(2-methylbutyl)-5-pyridylmethylene-substituted 2-thio-3,5-dihydro-4H-imidazole-4-one (L) with CuCl2·2H2O in MeOH/CH2Cl2 or Cu(acac)2 in MeOH/CH2Cl2 affords to binuclear complexes with the [L-H]2Cu+1.5Cu+1.5Cl or [L-H]2CuICuI composition, resp. X-ray crystallog. demonstrated close Cu-Cu interaction for the first complex and the absence of Cu-Cu bonding for the second one. In the experimental materials used by the author, we found Bis(acetylacetone)copper(cas: 13395-16-9Electric Literature of 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. Electric Literature of C10H16CuO4

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

The author of 《Mechanomagnetics in Elastic Crystals: Insights from [Cu(acac)2]》 were Kenny, Elise P.; Jacko, Anthony C.; Powell, Ben J.. And the article was published in Angewandte Chemie, International Edition in 2019. Recommanded Product: Bis(acetylacetone)copper The author mentioned the following in the article:

We predict that the magnetic properties of [Cu(acac)2], an elastically flexible crystal, change drastically when the crystal is bent. It is found that unbent [Cu(acac)2] is an almost perfect Tomonaga-Luttinger liquid Broken-symmetry d.-functional calculations reveal that the magnetic exchange interactions along the chains are an order of magnitude larger than the interchain exchange. The geometrically frustrated interchain interactions cannot magnetically order the material at any exptl. accessible temperature The ordering temperature (TN), calculated from the chain-RPA, increases by 24 orders of magnitude when the material is bent. We demonstrate that geometric frustration both suppresses TN and enhances the sensitivity of TN to bending. In [Cu(acac)2], TN is extremely sensitive to bending but remains too low for practical applications, even when bent. Partially frustrated materials could achieve the balance of high TN and good sensitivity to bending required for practical applications of mechanomagnetic elastic crystals. The results came from multiple reactions, including the reaction of Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: Bis(acetylacetone)copper)

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. Recommanded Product: Bis(acetylacetone)copper

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

The author of 《Measuring the mechanical properties of flexible crystals using bi-modal atomic force microscopy》 were Dupont, Madeleine F.; Elbourne, Aaron; Mayes, Edwin; Latham, Kay. And the article was published in Physical Chemistry Chemical Physics in 2019. Application In Synthesis of Bis(acetylacetone)copper The author mentioned the following in the article:

Flexible crystals are an emerging class of material with unique properties and a range of potential applications. Their relatively recent development means that mech. characterization protocols have not yet been widely established. There is a lack of quant. flexibility measurements, such as the elastic modulus (Young’s modulus), reported in the literature. In this work, we investigate amplitude modulated-frequency modulated at. force microscopy (AM-FM AFM) as a fast, versatile method for measuring the elastic modulus of single flexible crystals. Specifically, the elastic modulus of single crystals of copper(II) acetylacetonate (Cu(acac)2) was measured. The elastic modulus for Cu(acac)2 was found to be 4.79 ± 0.16 GPa. Importantly, this technique was able to map the variation in mech. properties over the surface of the material with nanoscale resolution, showing some degree of correlation between surface morphol. and elastic modulus. Addnl., the distribution of elastic modulus values can be measured at different locations on the crystal, giving a statistically robust distribution, which cannot be achieved using other methods. After reading the article, we found that the author used Bis(acetylacetone)copper(cas: 13395-16-9Application In Synthesis of Bis(acetylacetone)copper)

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.Application In Synthesis of Bis(acetylacetone)copper

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

《Catalytic Synthesis of Phosphorus-Containing Extractant: Tributyl Phosphate》 was written by Bishimbaeva, G. K.; Nalibaeva, A. M.; Polimbetova, G. S.; Borangazieva, A. K.; Ibraimova, Zh. U.; Zhanabaeva, A. K.. HPLC of Formula: 13395-16-9This research focused ontributyl phosphate catalytic phosphorus extractant. The article conveys some information:

By kinetics, volumetry, gas chromatog., elemental anal., IR, NMR spectroscopy the oxidative alkoxylation of yellow phosphorus to phosphorus esters in alc. solutions of copper and iron salts was studied using oxygen as an oxidant. The effect of temperature, oxygen partial pressure, nature and concentration of reagents was investigated on the phosphorus conversion. The novelty and relevance of research is associated with the development of “”chlorine-free”” direct syntheses of esters of phosphorus acids from phosphorus and alcs. It was established that copper halides are characterized by the highest catalytic activity at a 5-10 optimal ratio of CuX2/P4 and a temperature of 60°C. The partial pressure of oxygen does not significantly affect the yield of phosphorus acid esters. Enlarged laboratory tests of the catalytic synthesis of tri-Bu phosphate from yellow phosphorus and butanol were carried out under optimal conditions, in which the amount of phosphorus added to the reaction was increased 20-40 times as compared with exptl. studies. After reading the article, we found that the author used Bis(acetylacetone)copper(cas: 13395-16-9HPLC of Formula: 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. HPLC of Formula: 13395-16-9

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

HPLC of Formula: 7789-45-9In 2021 ,《Distinct Sustainable Carbon Nanodots Enable Free Radical Photopolymerization, Photo-ATRP and Photo-CuAAC Chemistry》 was published in Angewandte Chemie, International Edition. The article was written by Kuetahya, Ceren; Zhai, Yingxiang; Li, Shujun; Liu, Shouxin; Li, Jian; Strehmel, Veronika; Chen, Zhijun; Strehmel, Bernd. The article contains the following contents:

Carbon nanodots (CDs) originating from different biomass result in different activities to sensitize photo-ATRP and photo-CuAAC reaction protocols with visible light. Free radical polymerization of tri(propylene glycol)diacrylate also exhibited a good efficiency using CDs in combination with an iodonium salt employing LEDs emitting either at 405 nm, 525 nm or 660 nm. Photo-ATRP experiments confirmed controlled polymerization conditions using CuII at the ppm scale resulting in dispersities between 1.06 to 1.10. Chain end fidelity was successfully provided by chain extension and block copolymerization addnl. approving the living feature of polymerization using a CD synthesized from lac dye comprising olefinic moieties in the originating biomass. By global anal., time resolved fluorescence measurements indicated the appearance of several emitting species contributing to the reactivity of the excited states. Different cytotoxic response appeared following the answer of MCF-10A cells in a flow cytometry assay; that is 400μg mL-1. Thus, cell viability was greater 80% in the case of CD-2-CD-5 while that of CD-1 was close to 70%. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9HPLC of Formula: 7789-45-9) 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.HPLC of Formula: 7789-45-9

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