Month: October 2022

In 2019,Russian Journal of General Chemistry included an article by Makhaev, V. D.; Petrova, L. A.; Shulga, Yu. M.. Application of 13395-16-9. The article was titled 《Mechanically Activated Solid-Phase Reaction of Copper(I) Chloride with Sodium β-Diketonates: Formation of Metallic Copper Nanoparticles》. The information in the text is summarized as follows:

Solid-phase reaction of copper(I) chloride with sodium β-diketonates under mech. activation in a vibration ball mill involves disproportionation of CuCl with the formation of the corresponding copper(II) β-diketonate and highly reactive X-ray amorphous metallic copper nanoparticles. The effect of reaction conditions on the process and some properties of the activated mixtures have been studied. In the experiment, the researchers used Bis(acetylacetone)copper(cas: 13395-16-9Application 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.Application of 13395-16-9

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

《Copper Isolated Sites on N-Doped Carbon Nanoframes for Efficient Oxygen Reduction》 was written by Huang, Cong; Zheng, Lirong; Feng, Wenshuai; Guo, Aimin; Gao, Xiaohui; Long, Zhen; Qiu, Xiaoqing. COA of Formula: C10H16CuO4 And the article was included in ACS Sustainable Chemistry & Engineering in 2020. The article conveys some information:

In recent years, metal isolated site catalysts with the high exposure and maximized availability of metal species provide a new route to boost the oxygen reduction performance. However, in the absence of clusters and nanoparticles, the synthesis of this catalyst with metal high-loading, especially for copper, is still a big challenge. In this work, a metal isolated site catalyst with high copper content (1.12 wt %), copper isolated sites anchored on N-doped carbon materials (donated as Cu ISs/NC-1000), was prepared by the pyrolysis of copper acetylacetone within the metal-organic framework (ZIF-8) at 1000°C. The successful preparation of products can be demonstrated by high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption spectra. With the merits of the atomically dispersed surface metal atoms and abundant ORR-favored copper active sites, the present Cu ISs/NC-1000 exhibits an excellent ORR electrochem. activity with a half-wave potential of 0.855 V (vs RHE) and a limiting c.d. of 5.2 mA cm-2 in the electrochem. tests, superior to the results from com. Pt/C and previously reported Cu-based materials. For the durability, the negligible activity decay after 10,000 continuous potential cycles and good resistance to methanol crossover can be noted. The outstanding catalytic activity from the present Cu ISs/NC-1000 demonstrates the superiority of metal isolated sites as electrocatalytic centers. The excellent ORR activity of Cu ISs/NC catalysts in this work promotes the development of clean and sustainable energy devices. 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”

Guo, Xueyi; Liu, Sheng; Wang, Weijia; Zhu, Congtan; Li, Chongyao; Yang, Ying; Tian, Qinghua; Liu, Yong published their research in Journal of Colloid and Interface Science in 2021. The article was titled 《Enhanced photocatalytic hydrogen production activity of Janus Cu1.94S-ZnS spherical nanoheterostructures》.HPLC of Formula: 13395-16-9 The article contains the following contents:

Photocatalytic hydrogen evolution is one of the most promising approaches for efficient solar energy conversion. The light-harvesting ability and interfacial structure of heterostructured catalysts regulate the processes of photon injection and transfer, which further determines their photocatalytic performances. Here, we report a Janus Cu1.94S-ZnS nano-heterostructured photocatalyst synthesized using a facile stoichiometrically limited cation exchange reaction. Djurleite Cu1.94S and wurtzite ZnS share the anion skeleton, and the lattice mismatch between immiscible domains is ∼1.7%. Attributing to the high-quality interfacial structure, Janus Cu1.94S-ZnS nanoheterostructures (NHs) show an enhanced photocatalytic hydrogen evolution rate of up to 0.918 mmol h-1 g-1 under full-spectrum irradiation, which is ∼38-fold and 17-fold more than those of sole Cu1.94S and ZnS nanocrystals (NCs), resp. The results indicate that cation exchange reaction is an efficient approach to construct well-ordered interfaces in hybrid photocatalysts, and it also demonstrates that reducing lattice mismatch and interfacial defects in hybrid photocatalysts is essential for enhancing their solar energy conversion performance. In the part of experimental materials, we found many familiar compounds, such as 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”

Category: copper-catalystIn 2022 ,《Polymer Grafted Nanoparticle Composites with Enhanced Thermal and Mechanical Properties》 appeared in ACS Applied Materials & Interfaces. The author of the article were Kubiak, Joshua M.; Li, Buxuan; Suazo, Mathew; Macfarlane, Robert J.. The article conveys some information:

The distribution of filler particles within a polymer matrix nanocomposite has a profound influence on the properties and processability of the material. While filler aggregation and percolation can significantly enhance particular functionalities such as thermal and elec. conductivity, the formation of larger filler clusters and networks can also impair mech. properties like strength and toughness and can also increase the difficulty of processing. Here, a strategy is presented for the preparation of functional composites that enhance thermal conductivity over polymer alone, without neg. affecting mech. performance or processability. Thermal crosslinking of self-suspended polymer grafted nanoparticles is used to prepare highly filled (>50 volume %) macroscopic nanocomposites with homogeneously dispersed, non-percolating alumina particles in an organic matrix. The initial composites use low glass transition temperature polymer grafts and thus are flexible and easily shaped by thermoforming methods. However, after thermal aging, the resulting materials display high stiffness (>10 GPa) and enhanced thermal conductivity (>100% increase) and also possess mech. strength similar to commodity plastics. Moreover, the covalent bonding between matrix and filler allows for the significant elevation of thermal conductivity despite the extensive interfacial area in the nanocomposite. The thermal aging of polymer grafted nanoparticles is therefore a promising method for producing easily processable, mech. sturdy, and macroscopic nanocomposites with improved thermal conductivity The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Category: copper-catalyst)

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.Category: copper-catalyst

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

《Lead-free two-dimensional (R-NH3)2MX4 inorganic-organic hybrids: solid-solid phase transitions and broadband emission》 was published in Journal of Physics D: Applied Physics in 2020. These research results belong to Bochalya, Madhu; Kumar, Sunil. Application In Synthesis of Cupric bromide The article mentions the following:

Among the large family of two-dimensional inorganic-organic hybrid material systems, the lead-free ones are significantly important due to their nontoxicity and suitability in energy storage devices, heat management in electronics, optoelectronics, light-emitting and memory devices, low-temperature magnetic refrigeration, and other applications. Thermal stability, solid-solid phase transitions and light emission properties of solution-processed copper- and manganese-based (R-NH3)2MX4 hybrids are reported here. Manganese chloride and long carbon chain-based systems are found to be highly stable as compared to the others. Thermally stable up to temperatures beyond 240 °C, these systems are seen to exhibit multiple solid-solid phase transitions in the temperature range of 30 °C-100 °C. The nature of the phase transitions depends on the length and the conformation of the organic chain, and the metal-halogen network present in them. Owing to the phase-change temperatures being near the room temperature as well as the high-value enthalpy and entropy changes, (C12H25NH3)2MnCl4 is more appropriate for energy storage and release applications. Also, these systems exhibit broadband light emission under ambient conditions to provide a low-cost route to white light-emitting devices. The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Application In Synthesis 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.Application In Synthesis of Cupric bromide

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

Han, Yulian; Hamada, Morihiko; Chang, I-Ya; Hyeon-Deuk, Kim; Kobori, Yasuhiro; Kobayashi, Yoichi published an article in 2021. The article was titled 《Fast T-Type Photochromism of Colloidal Cu-Doped ZnS Nanocrystals》, and you may find the article in Journal of the American Chemical Society.COA of Formula: C10H16CuO4 The information in the text is summarized as follows:

This paper reports on durable and nearly temperature-independent (at 298-328 K) T-type photochromism of colloidal Cu-doped ZnS nanocrystals (NCs). The color of Cu-doped ZnS NC powder changes from pale yellow to dark gray by UV light irradiation, and the color changes back to pale yellow on a time scale of several tens of seconds to minutes after stopping the light irradiation, while the decoloration reaction is accelerated to submillisecond in solutions This decoloration reaction is much faster than those of conventional inorganic photochromic materials. The origin of the reversible photoinduced coloration is revealed to be a strong optical transition involving a delocalized surface hole which survives over a minute after escaping from intraparticle carrier recombination due to electron-hopping dissociation ZnS NCs can be easily prepared in a water-mediated one-pot synthesis and are less toxic. Therefore, they are promising for large-scale photochromic applications such as windows and building materials in addition to conventional photochromic applications. Moreover, the present study demonstrates the importance of excited carrier dynamics and trap depths, resulting in coloration over minutes not only for photochromic nanomaterials but also for various advanced photofunctional materials, such as long persistent luminescent materials and photocatalytic nanomaterials. The experimental part of the paper was very detailed, including the reaction process of 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”

In 2022,Ghosh, Boyli; Banerjee, Ambar; Roy, Lisa; Manna, Rabindra Nath; Nath, Rounak; Paul, Ankan published an article in Angewandte Chemie, International Edition. The title of the article was 《The Role of Copper Salts and O2 in the Mechanism of C≃N Bond Activation for Facilitating Nitrogen Transfer Reactions》.Synthetic Route of Br2Cu The author mentioned the following in the article:

CN bond scission can be a potential avenue for the functionalization of chem. bonds. We have conducted a computational study, using d. functional theory (DFT) and ab initio multireference CASSCF methods, to unravel the intricate mechanistic pathways traversed in the copper-promoted, dioxygen-assisted reaction for the formation of aryl isocyanate species from aryl aldehyde. This aryl isocyanate species acts as an active species for CN bond cleavage of coordinated cyanide anion enabling nitrogen transfer to various aldehydes. Electronic structure anal. revealed that under all the reaction conditions radical-based pathways are operative, which is in agreement with the exptl. findings. The major driving force is a CuII/I redox cycle initiated by single-electron transfer from the carbon center of the nitrile moiety. Our study reveals that the copper salts act as the “”electron pool”” in this unique nitrogen transfer reaction forming an aryl isocyanate species from aryl aldehydes. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu) 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.Synthetic Route of Br2Cu

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

In 2022,Abid Derbel, Marwa; Nasr, Samia; Naili, Houcine; Rekik, Walid published an article in Inorganic Chemistry Communications. The title of the article was 《Thermal behavior and optical properties of a new dimeric 1D mixed halide hybrid material [CuBrCl(C2H8N2)]》.Synthetic Route of Br2Cu The author mentioned the following in the article:

A new organic-inorganic Cu-based hybrid material containing ethylenediamine as organic part and mixed bromide/chloride as halide ions was synthesized and crystallog. characterized. At room temperature, this new compound adopts the monoclinic symmetry (space group P21/m) and presents the following unit-cell parameters: a 6.927(3), b 5.884(3), c 8.399(4) Å, β 94.856(13)° and Z = 2. The 1-dimensional structure of the title compound consists of infinite dimeric chains running along the crystallog. b axis. These chains are constructed from dimeric units [Cu2Br2Cl2(C2H8N2)2] linked together by sharing (Br/Cl) atoms. N-H… Br/Cl H bonds guarantee the connection between the dimeric chains and the cohesion of the structure. The TGA shows that this new hybrid material decomposes in two stages giving rise to the Cu oxide as final residue. The UV-visible absorption shows that the new complex undergoes three optical absorption bands at 238, 317 and 686 nm, resp. From the gap energy value of 2.92 eV the new mixed halide compound is a semiconductor material. The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu)

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.Synthetic Route of Br2Cu

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”

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”