Category: 7789-45-9

Liu, Huan; Xiong, Zhuo; Peng, Rong; Gong, Bengen; Chang, Lin; Yang, Jianping; Zhao, Yongchun; Zhang, Junying published an article in 2021. The article was titled 《Elemental mercury removal from simulated coal-fired flue gas by modified tonstein in coal seam》, and you may find the article in Fuel.Category: copper-catalyst The information in the text is summarized as follows:

Tonstein in coal seam (TCS) is a kind of mining solid waste, which was developed to a novel adsorbent (CuBr2-TCS) by using copper bromide modification. In this paper, CuBr2-TCS was subjected to elemental mercury (Hg0) removal experiment in simulated coal-fired flue gas (SFG). Several characterization methods were used to determine the mineralogical characteristics of TCS and reaction mechanisms. In-depth, the Hg0 removal performances of CuBr2-TCS under different flue gas components were explored. The results revealed that CuBr2-TCS exhibited 92.1% and 78.3% Hg0 removal efficiency in dry and wet SFG, resp. HCl and O2 facilitated Hg0 removal performance of CuBr2-TCS by supplementing oxygen atoms and halogens, resp., accompanying some intermediate transition products such as Cu2OBr2. SO2 played a serious suppressive role. SO2 acting alone or NO and SO2 acting simultaneously caused irreversible changes in the surface functional groups that formed active sites with NO. However, the thermal stability of the adsorbed mercury on the adsorbent which was spent in N2 + SO2 + O2 atmosphere became better. In addition, the spent adsorbent that first went through the Hg0 removal process in N2 + NO atm., exhibited higher Hg0 removal efficiency in N2 + SO2 + NO atm. than that first reacted in N2 + SO2 atmosphere. CuBr2-TCS is a cost-effective adsorbent for the Hg0 abatement from the coal-fired flue gas (CFG). In the experiment, the researchers used 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”

Li, Hang; Li, Mingqiang; Li, Tong published their research in Materials Letters in 2021. The article was titled 《A novel rechargeable metal halides battery with ethylene glycol cyclic sulfate electrolyte system》.Name: Cupric bromide The article contains the following contents:

Metal halides have become the research topic of battery due to their high energy d. In our work, we synthesized ethylene glycol cyclic sulfate (egcs) as the electrolyte solvent through a simple one-step hydrothermal reaction, and for the first time proposed a new non-toxic rechargeable copper bromide (CuBr2) battery with a complete system. After testing, the specific capacity of the CuBr2-battery with the electrolyte of this system can reach 200 mAh g-1cb at the charging and discharging c.d. of 2 A g-1. The specific capacity can still reach 142 mAh g-1cb after 8000 cycles. In addition, the reaction mechanism of CuBr2-battery was verified by XPS, IR, MS and XRD characterization. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Name: 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.Name: Cupric bromide

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

Li, Tzu-Han; Yadav, Vivek; Conrad, Jacinta C.; Robertson, Megan L. published their research in ACS Macro Letters in 2021. The article was titled 《Effect of Dispersity on the Conformation of Spherical Polymer Brushes》.Quality Control of Cupric bromide The article contains the following contents:

We show that dispersity (D) markedly alters the conformation of spherical polymer brushes. The average lengths (lb) of poly(tert-Bu acrylate) (PtBA) brushes of varying D grafted to nanoparticles were measured using dynamic light scattering. In the semidilute polymer brush (SDPB) regime, the lb of PtBA and polymers from earlier studies of various D could be cleanly collapsed onto a master curve as a function of the scaling variable Nwσ1/3, where Nw is the weight-average d.p. and σ is the grafting d. In the concentrated polymer brush (CPB) regime, however, lb collapsed onto a bifurcated curve as a function of the scaling variable Nwσ1/2, indicating D more strongly affects the average length of brushes with low Nwσ1/2. We propose that the stretching of the stem near the particle surface due to interchain interactions in the CPB regime leads to greater lb in broad dispersity brushes of low but not high Nwσ1/2. In the experimental materials used by the author, we found Cupric bromide(cas: 7789-45-9Quality Control 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.Quality Control of Cupric bromide

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

In 2019,Thin Solid Films included an article by Ryu, Jin Su; Lim, Eun Taek; Choi, Jae Sang; Chung, Chee Won. Application of 7789-45-9. The article was titled 《Dry etching of copper thin films in high density plasma of CH3COOH/Ar》. The information in the text is summarized as follows:

Inductively coupled plasma reactive ion etching of copper thin films patterned with SiO2 masks was carried out using CH3COOH/Ar gas. The etch rate, etch selectivity to SiO2 mask, and the etch profiles of copper films were examined The evolution study of the etch profile as a function of gas concentration and etch depth revealed the etch sequence and etch mechanism. In the optimized CH3COOH/Ar gas, the systematic approach on the etch characteristics of copper films was performed by changing the etch parameters including inductively coupled plasma (ICP) rf power, dc-bias voltage to substrate, and process pressure. As the ICP rf power and dc-bias voltage increased and the process pressure decreased, the etch rate increased and the etch profile improved. XPS was used to determine the etch mechanism in CH3COOH/Ar gas. Finally, the etching of copper films in the CH3COOH/Ar was achieved with good etch profile with a high degree of anisotropy. 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”

Recommanded Product: Cupric bromideIn 2019 ,《Poly(N-isopropylacrylamide) Response to Salt Concentration and Anion Identity: A Brush-on-Brush Study》 appeared in Langmuir. The author of the article were Humphreys, Ben A.; Johnson, Edwin C.; Wanless, Erica J.; Webber, Grant B.. The article conveys some information:

The stability of poly(N-isopropylacrylamide) (PNIPAM) brush-modified colloidal silica particles was compared to asym. and sym. PNIPAM brush direct force measurements in the presence of 1, 10, and 500 mM aqueous salt solution of KCl, KNO3, and KSCN between 10 and 45 °C. Dynamic light scattering measurements highlighted subtle variations in the salt-mediated thermoresponse, while at. force microscopy (AFM) force curves between a bare silica or PNIPAM brush-modified colloid probe and a planar PNIPAM brush elucidated differences in brush interactions. The AFM force curves in the presence of KCl primarily revealed steric interactions between the surfaces, while KNO3 and KSCN solutions exhibited electrosteric interactions on approach as a function of the chaotropic nature of the ion and the solution concentration The sym. PNIPAM brush interaction highlighted significant variations between KCl and KSCN at 1 and 500 mM concentrations, while the approach and retraction force curves were relatively similar at 10 mM concentration The combination of these techniques enabled the stability of PNIPAM brush-modified colloidal dispersions in the presence of electrolyte to be better understood with specific ion binding and the solution Debye length playing a significant role. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Recommanded Product: 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.Recommanded Product: Cupric bromide

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

《Interplay of Composition, pH, and Temperature on the Conformation of Multi-stimulus-responsive Copolymer Brushes: Comparison of Experiment and Theory》 was published in Langmuir in 2020. These research results belong to Johnson, Edwin C.; Willott, Joshua D.; de Vos, Wiebe M.; Wanless, Erica J.; Webber, Grant B.. Related Products of 7789-45-9 The article mentions the following:

Poly(2-(2-methoxyethoxy) Et methacrylate) (PMEO2MA), a thermoresponsive polymer with a lower critical solution temperature of ∼28°C, and poly(2-(diethylamino)ethyl methacrylate) (PDEA), a weak polybase with an apparent pKa of ∼7.5, were statistically copolymerized using ARGET ATRP to form multi-stimulus responsive polymer brushes. The stimulus responsive behavior of these brushes has been investigated with ellipsometry and numerical SCF (nSCF) theory. The pH and thermoresponsive behavior of a PDEA homopolymer brush was investigated exptl. in order to benchmark the nSCF theory calculations nSCF theory was able to reproduce the responsive behavior of PDEA and PMEO2MA homopolymer brushes. Three copolymer compositions (90:10, 70:30, 50:50 mol% MEO2MA:DEA) were investigated exptl. with pH ramps performed at low and high temperatures and temperature ramps performed at low and high pH. A broader range of compositions were investigated with nSCF theory and compared to the exptl. results, with the nSCF calculations able to capture the general behavior of the homopolymer and copolymer brushes. The responsive behavior of each brush to a given stimulus (temperature or pH) was dependent on both the polymer composition and environment (temperature or pH). The influence of pH on the brush increased with higher DEA mol% with copolymer brush response transitioning from temperature dominant to pH dominant. The temperature response of PMEO2MA was completely masked at low and high pH values by the presence of at least 30 mol% of polybase in the copolymer. In the experiment, the researchers used 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”

Tevenot, Quentin; Kawahara, Seiichi published their research in Langmuir in 2021. The article was titled 《ATRP-ARGET of a Styrene Monomer onto Modified Natural Rubber Latex as an Initiator》.Synthetic Route of Br2Cu The article contains the following contents:

Atom transfer radical polymerization with an activator regenerated by electron transfer (ATRP-ARGET) was performed for graft copolymerization of styrene onto natural rubber in the latex stage as a heterogeneous system. Deproteinized and subsequently brominated natural rubber particles in the latex stage were subjected to graft copolymerization of styrene on their surfaces in the presence of an activated ATRP catalyst. 1H NMR spectroscopy and size exclusion chromatog. (SEC) characterized the particles. Ozonolysis was performed to deduct the polyisoprene contribution to SEC. Graft copolymerization in heterogeneous media by extraction with an acetone/2-butanone solution Both the linear evolution of the mol. weight vs. monomer conversion and the high grafting efficiency associated with a narrow mol. weight distribution of the resulting grafted polystyrene confirm a living radical behavior.Cupric bromide(cas: 7789-45-9Synthetic Route 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.Synthetic Route of Br2Cu

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

In 2019,RSC Advances included an article by Ueoka, Naoki; Oku, Takeo; Suzuki, Atsushi. Reference of Cupric bromide. The article was titled 《Additive effects of alkali metals on Cu-modified CH3NH3PbI3-δClδ photovoltaic devices》. The information in the text is summarized as follows:

We investigated the addition of alkali metal elements (namely Na+, K+, Rb+, and Cs+) to Cu-modified CH3NH3PbI3-δClδ photovoltaic devices and their effects on the photovoltaic properties and electronic structure. The open-circuit voltage was increased by CuBr2 addition to the CH3NH3PbI3-δClδ precursor solution The series resistance was decreased by simultaneous addition of CuBr2 and RbI, which increased the external quantum efficiencies in the range of 300-500 nm, and the short-circuit c.d. The energy gap of the perovskite crystal increased through CuBr2 addition, which we also confirmed by first-principles calculations Charge carrier generation was observed in the range of 300-500 nm as an increase of the external quantum efficiency, owing to the partial d. of states contributed by alkali metal elements. Calculations suggested that the Gibbs energies were decreased by incorporation of alkali metal elements into the perovskite crystals. The conversion efficiency was maintained for 7 wk for devices with added CuBr2 and RbI. In the experimental materials used by the author, we found 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”

Quality Control of Cupric bromideIn 2021 ,《A one-step synthesis of ultra-long silver nanowires with ultra-high aspect ratio above2000 and its application in flexible transparent conductive electrodes》 was published in Nanotechnology. The article was written by Zhang, Lu; Jiang, Fuliang; Wu, Bisheng; Lv, Chencheng; Wu, Minghua. The article contains the following contents:

Silver nanowires (AgNWs), appear as an extremely promising candidate for the next generation of flexible transparent conductive electrodes (FTCEs). However, the performance of AgNWs-FTCEs was severely limited by the aspect ratio of AgNWs, while it was still a big challenge to fabricate AgNWs with high aspect ratio nowadays. To improve the aspect ratio of AgNWs, bromide ion (Br-), cupric ion (Cu2+) and polyvinylpyrrolidone (PVP, Mw≈1300 000) which are beneficial for the synthesis of high aspect ratio AgNWs, were introduced in this article. The high quality and uniform AgNWs with the average diameter of 77.6 nm and the aspect ratio above 2000 were fabricated via a one-step solvothermal method. The effects of reaction time, molar ratio of AgNO3 to PVP and the concentration of CuBr2 on the aspect ratio of AgNWs were discussed. The mechanism of the synthesis of high aspect ratio AgNWs was explored. After that, the prepared AgNWs were spin-coated on the surface of PET film, the FTCEs based on the ultra-high aspect ratio AgNWs without any post-treatments exhibits relatively high transmittance, low haze and low sheet resistance, and the AgNWs have little effect on the optical performance of pristine PET film. The outstanding performance of the prepared FTCEs indicated that the ultra-high aspect ratio AgNWs are ideal materials in the application of FTCEs, and the method of fabricating AgNWs could provide a direction to the high aspect ratio AgNWs. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Quality Control 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.Quality Control of Cupric bromide

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

In 2022,Gorai, Sudip; Junghare, Vivek; Kundu, Kshama; Gharui, Sowmomita; Kumar, Mukesh; Patro, Birija Sankar; Nayak, Sandip K.; Hazra, Saugata; Mula, Soumyaditya published an article in ChemMedChem. The title of the article was 《Synthesis of Dihydrobenzofuro[3,2-b]chromenes as Potential 3CLpro Inhibitors of SARS-CoV-2: A Molecular Docking and Molecular Dynamics Study》.Application In Synthesis of Cupric bromide The author mentioned the following in the article:

The recent emergence of pandemic of coronavirus (COVID-19) caused by SARS-CoV-2 has raised significant global health concerns. More importantly, there is no specific therapeutics currently available to combat against this deadly infection. The enzyme 3-chymotrypsin-like cysteine protease (3CLpro) is known to be essential for viral life cycle as it controls the coronavirus replication. 3CLpro could be a potential drug target as established before in the case of severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV). In the current study, we wanted to explore the potential of fused flavonoids as 3CLpro inhibitors. Fused flavonoids (5a,10a-dihydro-11H-benzofuro[3,2-b]chromene) are unexplored for their potential bioactivities due to their low natural occurrences. Their synthetic congeners are also rare due to unavailability of general synthetic methodol. Here we designed a simple strategy to synthesize 5a,10a-dihydro-11H-benzofuro[3,2-b]chromene skeleton and it′s four novel derivatives Our structural bioinformatics study clearly shows excellent potential of the synthesized compounds in comparison to exptl. validated inhibitor N3. Moreover, in-silico ADMET study displays excellent druggability and extremely low level of toxicity of the synthesized mols. Further, for better understanding, the mol. dynamic approach was implemented to study the change in dynamicity after the compounds bind to the protein. A detailed investigation through clustering anal. and distance calculation gave us sound comprehensive data about their mol. interaction. In summary, we anticipate that the currently synthesized mols. could not only be a potential set of inhibitors against 3CLpro but also the insights acquired from the current study would be instrumental in further developing novel natural flavonoid based anti-COVID therapeutic spectra. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9Application In Synthesis 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.Application In Synthesis of Cupric bromide

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