Category: 7789-45-9

《Giant pressure-enhancement of multiferroicity in CuBr2》 was published in Physical Review Research in 2020. These research results belong to Zhang, J. S.; Xie, Yiqi; Liu, X. Q.; Razpopov, A.; Borisov, V.; Wang, C.; Sun, J. P.; Cui, Y.; Wang, J. C.; Ren, X.; Deng, Hongshan; Yin, Xia; Ding, Yang; Li, Yuan; Cheng, J. G.; Feng, Ji; Valenti, R.; Normand, B.; Yu, Weiqiang. Application In Synthesis of Cupric bromide The article mentions the following:

Type-II multiferroic materials, in which ferroelec. polarization is induced by inversion nonsym. magnetic order, promise new and highly efficient multifunctional applications based on the mutual control of magnetic and elec. properties. Although this phenomenon has to date been limited to low temperatures, here we report a giant pressure dependence of the multiferroic critical temperature in CuBr2. At 4.5 GPa, TC is enhanced from 73.5 to 162 K, to our knowledge the highest value yet reported for a nonoxide type-II multiferroic. This growth shows no sign of saturating and the dielec. loss remains small under these high pressures. We establish the structure under pressure and demonstrate a 60% increase in the two-magnon Raman energy scale up to 3.6 GPa. First-principles structural and magnetic energy calculations provide a quant. explanation in terms of dramatically pressure-enhanced interactions between CuBr2 chains. These large, pressure-tuned magnetic interactions motivate structural control in cuprous halides as a route to applied high-temperature multiferroicity. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide)

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 In Synthesis of Cupric bromide

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

《Giant Single-Crystal Shape Transformation with Wide Thermal Hysteresis Actuated by Synergistic Motions of Molecular Cations and Anions》 was published in Chemistry – A European Journal in 2020. These research results belong to Wang, Xiao-Lei; Xue, Jin-Peng; Sun, Xiao-Peng; Zhao, Yan-Xin; Wu, Shu-Qi; Yao, Zi-Shuo; Tao, Jun. Safety of Cupric bromide The article mentions the following:

Manipulating the collective mol. movements to implement macroscopic mech. response of bulk material is attractive and challenging. Here, an organic-inorganic hybrid single crystal is synthesized, which exhibits a giant macroscopic shape transformation with a remarkable thermal hysteretic feature. The colossal anisotropic shape change, which manifests as an abrupt elongation of ca. 9 % along the crystallog. c-axis and a concomitant contraction of ca. 9 % in a perpendicular direction, is induced by a significant reorientation of imidazolium, accompanied with a substantial configurational variation in CuBr42- complex anions. The synergistic motions of both the mol. cations and anions engender a remarkable large thermal hysteresis (>30 K) in the shape transformation of the single crystal, implying that this material may play a role in alternating memory media. Furthermore, due to the stable crystal lattice, a single crystal that demonstrates naked-eye detectable large shape transformation was used as a thermal actuator to spontaneously control an elec. circuit by temperature variation. The experimental process involved the reaction of Cupric bromide(cas: 7789-45-9Safety of Cupric bromide)

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.Safety of Cupric bromide

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

《Effects of co-Addition of sodium chloride and copper(II) bromide to mixed-cation mixed-halide perovskite photovoltaic devices》 was written by Ueoka, Naoki; Oku, Takeo. HPLC of Formula: 7789-45-9 And the article was included in ACS Applied Energy Materials in 2020. The article conveys some information:

The effects of the co-addition of NaCl and CuBr2 to CH3NH3PbI3-xClx-based photovoltaic devices are investigated. The lattice constant of CH3NH3Pb(Cu)I3-xClx(Br) is slightly increased by the addition of NaCl, and the X-ray diffraction peaks corresponding to the tetragonal symmetry disappears after several weeks, which indicates a structural transition from the tetragonal to the cubic system by the co-addition of NaCl and CuBr2. A microstructural model, where Na occupies the CH3NH3 vacancy site, is proposed. The Jahn-Teller effect of the Cu d electrons leads to the formation of a cubic system at elevated temperatures, and the conversion efficiency is maintained for 10 wk for the device with a co-addition of CuBr2 and NaCl.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”

《Functionalized expanded corn starch-anchored Cu(I): An efficient and recyclable catalyst for oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran》 was published in Applied Organometallic Chemistry in 2020. These research results belong to Hong, Mei; Min, Jie; Wu, Shuangyan; Li, Jiatong; Wang, Jing; Wei, Lifen; Ling, Zhi; Li, Kun; Wang, Shifa. Related Products of 7789-45-9 The article mentions the following:

The development of new strategies for the synthesis of biomass-based nonprecious metal heterogeneous catalysts has recently received great interest from chemists because of the advantages of these catalytic systems being sustainable, low cost and green. An expanded corn starch-supported CuBr catalyst (ECS-SB-CuBr) has been successfully prepared and well characterized using Fourier transform IR spectroscopy, thermogravimetric anal., powder X-ray diffraction, XPS and SEM/energy-dispersive X-ray spectroscopy. Further, ECS-SB-CuBr was used as a heterogeneous catalyst for the selective oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF) and a full HMF conversion is obtained with 98% DFF yield in acetonitrile under ambient pressure of dioxygen at 50°. The catalyst also showed good reusability, could be easily recovered through filtration and washing and was reused in at least six consecutive runs with virtually no loss of catalytic performance. The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Related Products 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.Related Products of 7789-45-9

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

《CuBr2/EDTA-mediated ATRP for ultrasensitive fluorescence detection of lung cancer DNA》 was written by Zhang, Jingyu; Ba, Yanyan; Liu, Qianrui; Zhao, Liying; Wang, Dazhong; Yang, Huaixia; Kong, Jinming. SDS of cas: 7789-45-9 And the article was included in Journal of Advanced Research in 2020. The article conveys some information:

In this paper, we reported a system for the ultrasensitive fluorescence detection of cytokeratin fragment antigen 21-1 DNA (CYFRA21-1 DNA) for the early diagnosis of lung cancer. The approach used electron transfer atom transfer radical polymerization (ARGET-ATRP) with EDTA (EDTA) as the metal ligand. Firstly, thiolated peptide nucleic acid (PNA) was linked to aminated magnetic beads solutions (MBs) by a crosslinking agent and then hybridized with CYFRA21-1 DNA (tDNA). Subsequently, Zr4+ was introduced into the MBs by conjugating with the phosphate group of tDNA, and the initiator of ARGET-ATRP was introduced into via phosphate-Zr4+-carboxylate chem. Next, Cu(II)Br/EDTA was reduced to Cu(I)/EDTA by ascorbic acid (AA) to trigger ARGET-ATRP and then a large amount of fluorescein-o-acrylate (FA) mols. were grafted from the surface of the MBs, which amplified significantly the fluorescent signal. Under optimal conditions, a strong linear relationship of tDNA over the range from 0.1 fM to 1 nM (R2 = 0.9988). The limit of detection was as low as 23.8 aM (∼143 mols.). The fluorescence detection based on the ARGET-ATRP strategy yielded excellent sensitivity, selectivity, outstanding anti-interference properties, and cost-effectiveness. These results indicated that this strategy has considerable potential for biol. detection and early clin. diagnosis. After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9SDS of cas: 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.SDS of cas: 7789-45-9

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

Olijnyk, V.; Dziuk, B. published their research in Journal of Molecular Structure in 2021. The article was titled 《Spectral and structural insights of copper reduction pathways in the system of CuX2-R2S (X=Cl, Br; R=allyl, n-propyl)》.Computed Properties of Br2Cu The article contains the following contents:

We have explored the behavior of Cu(II)/Cu(I) redox couple in the system CuX2-R2S, X = Cl, Br; R = allyl, Pr, under anhydrous and anaerobic conditions, thus simulating the reduction half cycle in the copper catalyzed oxidation of thioethers. In doing so, the Cl-Br substitution was critical for tuning the reduction potentials, while the replacement of Pr group by allyl group supported the trapping of oxidation byproduct, halogen mols. It was therefore possible to use the spectrophotometric titration, thereby providing information on the distribution of complex species in acetonitrile solution The study showed that the trinuclear mixed-valence copper (I-II-II) aggregates play a crucial role in the evolution of the redox process. The crystal structures of mixed-valence phase, [CuICuII2Cl5(dipropylsulfide)2], as well as full-reduced Cu(I) species, [Cu5Br5(dipropylsulfide)3], have been also determined by single crystal X-ray diffraction. The first one is considered as one of crystallog. “”snapshots”” of an intermediate involved in sulfoxide formation, while the latter represents the end product built from porous chiral networks.Cupric bromide(cas: 7789-45-9Computed Properties of Br2Cu) 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.Computed Properties of Br2Cu

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

In 2019,Journal of Polymer Materials included an article by Shen, Xianrong; Xia, Dengzhou; Xiang, Yixin; Gao, Jiangang. Safety of Cupric bromide. The article was titled 《CuBr2/Me6TREN mediated ARGET ATRP of methyl acrylate in polyethylene glycol》. The information in the text is summarized as follows:

ARGET ATRP of Me acrylate (MA) with low concentration of air stable-CuBr2 catalyst was successfully carried out in green solvent polyethylene glycol (PEG) without any external reducing agent. The polymerizations of MA proceeded in a well-controlled manner as evidenced by kinetic studies, chain extension results, a linear increase of the mol. weights with the increasing of monomer conversion. and narrow mol. weight distribution (Mw/Mn = 1.1). Interestingly, we found that the PEG has the reduction ability to CuBr2 and could play as supplement reducing agent cooperation with Me6TREN to mediate ARGET ATRP. Reduction of Cu(II)Br2 to Cu(I)Br by different mol. weight PEG was proved by UV-visible spectroscopy. A.Q.-PEG with different mol. weight have strong effects on polymerization rate and the polymerization can be operated at suitable conditions where the use of catalyst concentration can decrease to 25 ppm level. 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”

In 2022,Swain, Sharada Prasanna; Kumar, K. Naveen; Mhate, Mouzma; Panchami, Hirave; Ravichandiran, V. published an article in Molecular Catalysis. The title of the article was 《Copper (II) bromide catalysed one pot bromination and amination for the green, cost-effective synthesis of clopidogrel》.Electric Literature of Br2Cu The author mentioned the following in the article:

Copper (II) bromide catalyzed one pot α-bromination and followed by amination of a benzylic ester was reported. The α-bromination of ester by copper (II) bromide generated copper (I) bromide and HBr. The copper (I) bromide was oxidized to copper (II) bromide by N-Methylmorpholine-N-Oxide (NMO) in presence of HBr. The amines undergo nucleophilic substitution reaction with α-brominated ester compound This methodol. was applied for the synthesis of the familiar antiplatelet drug clopidogrel. This green process is an alternate to classical methods for the synthesis of clopidogrel, which required, generated stochiometric amount of brominating agents and HBr, resp. In the experimental materials used by the author, we found Cupric bromide(cas: 7789-45-9Electric Literature of Br2Cu)

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.Electric Literature of Br2Cu

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

Product Details of 7789-45-9In 2019 ,《Fluorescent Patterns by Selective Grafting of a Telechelic Polymer》 was published in ACS Applied Polymer Materials. The article was written by Kopec, Maciej; Tas, Sinem; Cirelli, Marco; van der Pol, Rianne; de Vries, Ilse; Vancso, G. Julius; de Beer, Sissi. The article contains the following contents:

The preparation of patterned ultrathin films (sub-10 nm) composed of end-anchored fluorescently labeled poly(Me methacrylate) (PMMA) is presented. Telechelic PMMA was synthesized utilizing activator regenerated by electron transfer atom transfer radical polymerization and consecutively end-functionalized with alkynylated fluorescein by Cu-catalyzed azide-alkyne cycloaddition (CuAAC) “”click”” chem. The polymers were grafted via the α-carboxyl groups to silica or glass substrates pretreated with (3-aminopropyl)triethoxysilane (APTES). Patterned surfaces were prepared by inkjet printing of APTES onto glass substrates and selectively grafted with fluorescently end-labeled PMMA to obtain emissive arrays on the surface. In the experimental materials used by the author, we found Cupric bromide(cas: 7789-45-9Product Details of 7789-45-9)

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.Product Details of 7789-45-9

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

Reference of Cupric bromideIn 2022 ,《Quantum Spin-1/2 Dimers in a Low-Dimensional Tetrabromocuprate Magnet》 appeared in Chemistry – A European Journal. The author of the article were Sampson, Gavin; Bristowe, Nicholas C.; Carr, Sam T.; Saib, Asad; Stenning, Gavin B. G.; Clark, Ewan R.; Saines, Paul J.. The article conveys some information:

This work describes a homometallic spin-1/2 tetrabromocuprate adopting a bilayer structure. Magnetic-susceptibility measurements show a broad maximum centered near 70 K, with fits to this data using a Heisenberg model consistent with strong antiferromagnetic coupling between neighboring copper atoms in different layers of the bilayer. There are further weak intralayer ferromagnetic interactions between copper cations in neighboring dimers. First-principles calculations are consistent with this, but suggest there is only significant magnetic coupling within one direction of a layer; this would suggest the presence of a spin ladder within the bilayer with antiferromagnetic rung and weaker ferromagnetic rail couplings. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Reference of Cupric bromide)

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.Reference of Cupric bromide

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