Day: October 17, 2022

《Real-Time Electron Nanoscopy of Photovoltaic Absorber Formation from Kesterite Nanoparticles》 was published in ACS Applied Energy Materials in 2020. These research results belong to Qu, Yongtao; Chee, See Wee; Duchamp, Martial; Campbell, Stephen; Zoppi, Guillaume; Barrioz, Vincent; Giret, Yvelin; Penfold, Thomas J.; Chaturvedi, Apoorva; Mirsaidov, Utkur; Beattie, Neil S.. Reference of Bis(acetylacetone)copper The article mentions the following:

Cu2ZnSnS4 nanocrystals are annealed in a Se-rich atm. inside a transmission electron microscope. During the heating phase, a complete S-Se exchange reaction occurs while the cation sublattice and morphol. of the nanocrystals are preserved. At the annealing temperature, growth of large Cu2ZnSnSe4 grains with increased cation ordering is observed in real-time. This yields an annealing protocol which is transferred to an industrially similar solar cell fabrication process resulting in a 33% increase in the device open circuit voltage. The approach can be applied to improve the performance of any photovoltaic technol. that requires annealing because of the criticality of the process step. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Reference of 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. Reference of Bis(acetylacetone)copper

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”

《Effect of acetylacetone metal salts on curing mechanism and thermal stability of polybenzoxazine》 was written by Yan, Hongqiang; Hu, Jianan; Wang, Huaqing; Zhan, Zuomin; Cheng, Jie; Fang, Zhengping. Application In Synthesis of Bis(acetylacetone)copper And the article was included in High Performance Polymers in 2020. The article conveys some information:

To overcome high water absorption of inorganic metal salts and their poor compatibility with resin, acetylacetone metal salts (M(acac)n) were selected as the catalysts of benzoxazine resin. Their effects on the catalytic activity, structure, and thermal stability of polybenzoxazine had been estimated by dynamic differential scanning calorimetry, in situ Fourier transform IR spectroscopy, XPS, and thermal gravimetric analyzer. The results revealed that M(acac)n of iron (Fe3+), cobalt (Co3+ and Co2+), and copper (Cu2+) exhibited high catalytic activity and reduced evidently activation energy, especially acetylacetone iron salt. The addition of M(acac)n was beneficial to the formation of Ph-N-Ph structure, which was easy to form a denser carbon layer during thermal degradation, prevented heat transfer and further decomposition of the resin, and finally led to the increase of carbon residue at high temperature In the experiment, the researchers used many compounds, for example, 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”

In 2022,Smurova, L. A.; Kartasheva, Z. S. published an article in Russian Chemical Bulletin. The title of the article was 《Features of catalytic activity of binary systems based on d-metal compounds and cetyltrimethylammonium bromide for tert-butyl hydroperoxide decomposition as an example》.HPLC of Formula: 13395-16-9 The author mentioned the following in the article:

Binary systems based on the Cu, Ni, and Co complexes with various ligands and cationic surfactant cetyltrimethylammonium bromide (CTAB) were prepared The catalytic activity of these systems in the decomposition of tert-Bu hydroperoxide (TBHP) was studied. A specific feature of the CuII-CTAB and NiII-CTAB catalytic systems is that in terms of the decomposition rate of the peroxide bond they are superior to their individual components. The highest efficiency was detected when the copper complexes were used in the binary systems. The CTAB additives combined with Co(acac)2 exert an inhibition effect on the catalytic activity of cobalt, while the CTAB additives exert no effect in the case of other CoL2 compounds Assumptions about the mechanism of action of the binary systems were advanced. 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”

COA of Formula: C10H16CuO4In 2020 ,《Copper(II) compounds with cetyltrimethylammonium bromide as an efficient catalytic system for tert-butyl hydroperoxide decomposition》 was published in Russian Chemical Bulletin. The article was written by Smurova, L. A.; Kartasheva, Z. S.; Kovarsky, A. L.. The article contains the following contents:

Chelate compounds of copper(II) demonstrated high catalytic activity in tert-Bu hydroperoxide decomposition in the presence of cetyltrimethylammonium bromide (CTAB). The feature of this catalytic system is that it ensures high reaction rate without visible sign of catalyst deactivation at high reactant conversion and at room temperature The mechanism of catalytic activity of the three component system was investigated using electron and ESR spectroscopies. Based on the changes in the absorption spectra of CuII compound in the presence of CTAB, generation of [CuII·CTAB] complex, efficient catalytic particle in hydroperoxide decomposition, was discovered. 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) 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”

《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”

HPLC of Formula: 13395-16-9In 2021 ,《Solar Harvesting through Multilayer Spectral Selective Iron Oxide and Porphyrin Transparent Thin Films for Photothermal Energy Generation》 appeared in Advanced Sustainable Systems. The author of the article were Lyu, Mengyao; Lin, Jou; Krupczak, John; Shi, Donglu. The article conveys some information:

A fundamental challenge in energy sustainability is efficient utilization of solar energy towards energy-neutral systems. The current solar cell technologies have been most widely employed to achieve this goal, but are limited to a single-layer 2D surface. To harvest solar light more efficiently, a multilayer system capable of harvesting solar light in a cuboid through transparent photothermal thin films of iron oxide and a porphyrin compound is developed. Analogous to a multilayer capacitor, an array of transparent, spectral selective, photothermal thin films allows white light to penetrate them, not only collecting photon energy in a 3D space, but generating sufficient heat on each layer with significantly increased total surface area. In this fashion, thermal energy is generated via a multilayer photothermal system that functions as an efficient solar collector, energy converter and generator with high energy d. A solar-activated thermal energy generator that can produce heat without any power supply and reach a maximum temperature of 76.1 °C is constructed. With a constant incoming white light (0.4 W cm-2), the thermal energy generated can be amplified 12-fold via multilayers. The multilayer system extends another dimension in solar harvesting and paves a new path to energy generation for the energy-neutral system. 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”

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”