Day: October 19, 2022

Electric Literature of Br2CuIn 2020 ,《Surface-grafted polyacrylonitrile brushes with aggregation-induced emission properties》 was published in Polymer Chemistry. The article was written by Kopec, Maciej; Pikiel, Marcin; Vancso, G. Julius. The article contains the following contents:

Polyacrylonitrile (PAN) was synthesized and grafted from silicon wafers by copper-mediated photoinduced atom transfer radical polymerization (ATRP) using α-bromophenyl acetic acid-based initiators. Aggregation-induced photonic emission (AIE) was observed in well-defined, low mol. weight (Mn < 10k) bulk PAN as well as in thin (d < 15 nm), surface-grafted polymer brushes. 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”

Related Products of 7789-45-9In 2019 ,《Temperature-controlled orientation of proteins on temperature-responsive grafted polymer brushes: Poly(butyl methacrylate) vs poly(butyl acrylate): Morphology, wetting, and protein adsorption》 was published in Biomacromolecules. The article was written by Awsiuk, Kamil; Stetsyshyn, Yurij; Raczkowska, Joanna; Lishchynskyi, Ostap; Dabczynski, Pawel; Kostruba, Andrij; Ohar, Halyna; Shymborska, Yana; Nastyshyn, Svyatoslav; Budkowski, Andrzej. The article contains the following contents:

Poly(Bu methacrylate) (PBMA) or poly(Bu acrylate) (PBA)-grafted brush coatings attached to glass were successfully prepared using atom-transfer radical polymerization “”from the surface””. The thicknesses and composition of the PBMA and PBA coatings were examined using ellipsometry and time-of-flight secondary ion mass spectrometry (ToF-SIMS), resp. For PBMA, the glass-transition temperature constitutes a range close to the physiol. limit, which is in contrast to PBA, where the glass-transition temperature is around -55 °C. Atomic force microscopy studies at different temperatures suggest a strong morphol. transformation for PBMA coatings, in contrast to PBA, where such essential changes in the surface morphol. are absent. Besides, for PBMA coatings, protein adsorption depicts a strong temperature dependence. The combination of bovine serum albumin and anti-IgG structure anal. with the principal component anal. of ToF-SIMS spectra revealed a different orientation of proteins adsorbed to PBMA coatings at different temperatures In addition, the biol. activity of anti-IgG mols. adsorbed at different temperatures was evaluated through tracing the specific binding with goat IgG. In the part of experimental materials, we found many familiar compounds, such as Cupric bromide(cas: 7789-45-9Related Products 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.Related Products of 7789-45-9

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

《Ligand-Guided Growth of Alloyed Shells on Intermetallic Seeds as a Route toward Multimetallic Nanocatalysts with Shape-Control》 was written by Bueno, Sandra L. A.; Gamler, Jocelyn T. L.; Skrabalak, Sara E.. Recommanded Product: 13395-16-9 And the article was included in ChemNanoMat in 2020. The article conveys some information:

Shape-controlled core@shell PdCu@PtCu nanoparticles (NPs) were synthesized by seed-mediated co-reduction Specifically, cubic-shaped NPs were achieved by selecting tetraoctylammonium bromide (TOAB) and triphenylphosphine (TPP) as capping ligands. Their roles were investigated by incorporating independently each ligand into the reaction and analyzing the products by transmission electron microscopy (TEM). This anal. revealed that the quasi-spherical PdCu seeds acquired cubic shapes during the synthesis and directed shell deposition. This process was mediated by TPP, which was central to achieving monodisperse NPs with shape-control. The synthesis conditions were modified to tune both the thickness and composition of the shells. Evaluation of the NPs as catalysts for the electrooxidation of formic acid found that the NPs with the thinnest Pt-rich shells gave the highest specific activity, with the nanocubic shape also enhancing performance with respect to the spherical counterpart. These results highlight the benefits of integrating compositional, architectural, and shape-control all in one NP construct.Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: 13395-16-9) was used in this study.

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: 13395-16-9

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

Reference of Cupric bromideIn 2019 ,《Effect of Polymerization Components on Oxygen-Tolerant Photo-ATRP》 appeared in ACS Macro Letters. The author of the article were Rolland, Manon; Whitfield, Richard; Messmer, Daniel; Parkatzidis, Kostas; Truong, Nghia P.; Anastasaki, Athina. The article conveys some information:

Photo-ATRP has recently emerged as a powerful technique that allows for oxygen-tolerant polymerizations and the preparation of polymers with low dispersity and high end-group fidelity. However, the effect of various photo-ATRP components on oxygen consumption and polymerization remains elusive. Herein, we employ an in situ oxygen probe and UV-vis spectroscopy to elucidate the effects of ligand, initiator, monomer, and solvent on oxygen consumption. We found that the choice of photo-ATRP components significantly impacts the rate at which the oxygen is consumed and can subsequently affect both the polymerization time and the dispersity of the resulting polymer. Importantly, we discovered that using the inexpensive ligand TREN results in the fastest oxygen consumption and shortest polymerization time, even though no appreciable reduction of CuBr2 is observed This work provides insight into oxygen consumption in photo-ATRP and serves as a guideline to the judicious selection of photo-ATRP components for the preparation of well-defined polymers.Cupric bromide(cas: 7789-45-9Reference 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.Reference of Cupric bromide

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

In 2019,Chemistry of Materials included an article by Ren, Huan; Wang, Miao; Li, Zhe; Laffir, Fathima; Brennan, Grace; Sun, Yuanwei; Stokes, Killian; Geaney, Hugh; OReilly, Emmet J.; Gao, Peng; Liu, Ning; McCarthy, Conor; Ryan, Kevin M.. Application of 13395-16-9. The article was titled 《Synthesis and Characterization of CuZnSe2 Nanocrystals in Wurtzite, Zinc Blende, and Core-Shell Polytypes》. The information in the text is summarized as follows:

CuZnSe2 (CZSe) is an important ternary semiconductor comprised of earth-abundant elements with a suitable bandgap for visible light absorption and structural/stoichiometric versatility that make it a promising candidate for photovoltaic applications. Here the authors report the controlled synthesis of the compound Cu chalcogenide in nanocrystal form using a colloidal hot injection approach. Also, the authors demonstrate control over the crystal phase to occur as either wurtzite (WZ) or Zn blende (ZB) as a function of the presence and absence of phosphine-based ligands. A major emission peak was observed at ∼1.7 eV using low-temperature photoluminescence (PL), ranging from 30 to 200 K. Addnl., the authors demonstrate the ability to extend this synthetic protocol to form a polytype structure comprised of a ZB core with a WZ shell. The experimental part of the paper was very detailed, including the reaction process of 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”

The author of 《Electrochemically Mediated Atom Transfer Radical Polymerization of Methyl Methacrylate: The Importance of Catalytic Halogen Exchange》 were De Bon, Francesco; Isse, Abdirisak A.; Gennaro, Armando. And the article was published in ChemElectroChem in 2019. Formula: Br2Cu The author mentioned the following in the article:

Electrochem. mediated atom transfer radical polymerization (eATRP) of Me methacrylate (MMA) was studied in 1-butyl-3-methylimidazolium triflate ([BMIm][OTf]) and ethanol. When 2-bromopropionitrile and Et 2-bromoisobutyrate were used as initiators, poorly controlled or uncontrolled polymerizations yielding polymers with mol. weights largely exceeding the theor. values were obtained. Poor control was attributed to a reactivity mismatch between initiator and dormant species, which was successfully suppressed by combining eATRP with catalytic halogen exchange. Well-defined polymers (Mn greater than 30000 and D less than 1.2) were obtained in both solvents under optimized conditions. The possibility of using PMDETA as an inexpensive ligand in combination with Et α-bromophenylacetate as initiator was also successful. Good chain-end fidelity during eATRP was confirmed by chain extension of PMMA-Cl macroinitiator with MMA in ethanol. Polymers prepared in both solvents were found to be mainly syndiotactic, without any solvent effect on tacticity. After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9Formula: 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.Formula: Br2Cu

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

The author of 《Ultra-low volume oxygen tolerant photoinduced Cu-RDRP》 were Liarou, Evelina; Anastasaki, Athina; Whitfield, Richard; Iacono, Carmelo E.; Patias, Georgios; Engelis, Nikolaos G.; Marathianos, Arkadios; Jones, Glen R.; Haddleton, David M.. And the article was published in Polymer Chemistry in 2019. Category: copper-catalyst The author mentioned the following in the article:

We introduce the first oxygen tolerant ultra-low volume (as low as 5μL total reaction volume) photoinduced copper-RDRP of a wide range of hydrophobic, hydrophilic and semi-fluorinated monomers including lauryl and hexyl acrylate, poly(ethylene glycol Me ether acrylate) and trifluoroethyl (meth)acrylates. In the absence of any external deoxygenation, well-defined homopolymers can be obtained with low dispersity values, high end-group fidelity and near-quant. conversions. Block copolymers can be efficiently synthesized in a facile manner and the compatibility of the system to larger scale polymerizations (up to 0.5 L) is also demonstrated by judiciously optimizing the reaction conditions. Importantly, the online monitoring of oxygen consumption was also conducted through an oxygen probe and the role of each component is identified and discussed. In the part of experimental materials, we found many familiar compounds, such as 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”

《Induced high selectivity methanol formation during CO2 hydrogenation over a CuBr2-modified CuZnZr catalyst》 was published in Journal of Catalysis in 2020. These research results belong to Chen, Shuyao; Zhang, Junfeng; Song, Faen; Zhang, Qingde; Yang, Guohui; Zhang, Meng; Wang, Xiaoxing; Xie, Hongjuan; Tan, Yisheng. Recommanded Product: Cupric bromide The article mentions the following:

Developing catalysts with high activity and high selectivity toward methanol, and elucidating the structure-activity relationship, are important in the area of CO2 hydrogenation. Herein, a simple ultrasonic-assisted impregnation modification method, which modifies a CuZnZr catalyst for methanol synthesis from CO2, is reported. The results show high methanol selectivity (97.1%) and a CO2 conversion of 10.7%, in the presence of the catalyst modified with CuBr2 (CuZnZr/CuBr2). Furthermore, detailed investigations of the structure-activity relationship demonstrate that the CuBr2 modification influences both the catalyst surface properties and catalyst morphol. In particular, residual Br, as a CuBr phase, is stabilized on the catalyst surface and is able to significantly passivate the reverse water-gas shift activity on the Cu surface; therefore, CO formation on the Cu surface is almost completely suppressed. The catalytic evaluation and IR data support the formate pathway mechanism in the presence of the CuZnZr/CuBr2 catalyst to synthesize methanol from CO2. In the part of experimental materials, we found many familiar compounds, such as 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”

Singh, Vivek; Sinha, Jyoti; Nanda, Aman; Shivashankar, S. A.; Bhat, Navakanta; Avasthi, Sushobhan published their research in Inorganic Chemistry in 2021. The article was titled 《Precursor to Gas Sensor: A Detailed Study of the Suitability of Copper Complexes as an MOCVD Precursor and their Application in Gas Sensing》.Recommanded Product: Bis(acetylacetone)copper The article contains the following contents:

There are very few p-type semiconductors available compared to n-type semiconductors for pos. sensing response for oxidizing gases and other important electronic applications. Cupric oxide (CuO) is one of the few oxides that show p-type conductivity, useful for sensing oxidizing gases. Many researchers obtained CuO using the chem. and solid-state routes, but uniformity and large-area deposition have been the main issues. Chem. vapor deposition is one such technique that provides control on several deposition parameters, which allow obtaining thin films having crystallinity and uniformity over a large area for the desired application. However, CuO-chem. vapor deposition (CVD) is still unfathomed due to the lack of suitability of copper precursors based on vapor pressure, contamination, and toxicity. Here, to address these issues, we have taken four Cu complexes (copper(II) acetylacetonate, copper(II) bis(2,2,6,6-tetramethyl-3,5-heptanedionato), copper(II) ethylacetoacetate, and copper(II) tert-butylacetoacetate), which are evaluated using thermogravimetry for suitability as a CVD precursor. The decomposition behavior of the complexes was also exptl. confirmed by depositing CuO thin films via CVD. Phase purity, decomposition, volatility, growth rate, and morphol. characteristics of the films are investigated in detail. Anal. suggests that copper(II) tert-butylacetoacetate has the highest vapor pressure and growth rate at a low temperature, making it the most suitable precursor for high-throughput CVD. Further, to investigate the role of these precursors, films deposited using Cu complexes were subjected to gas sensing. The CuO gas sensor fabricated on glass shows pronounced NO2 sensing. The sensing results of CuO films have been explained from the standpoint of roughness, morphol., and unpassivated bonds present on the surface of films and vapor pressure of precursors. The higher d. of surface state and the lower resistivity of the Cu(tbaoac)2 film lead to a sensor with higher responsivity and sensitivity (down to 1 ppm). These precursors can probably be utilized to improve the performance of other metal oxide gas sensors, especially Cu2O and Cu-III-O2. The experimental part of the paper was very detailed, including the reaction process of Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: 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.Recommanded Product: Bis(acetylacetone)copper

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

Resende, Joao; Nguyen, Van-Son; Fleischmann, Claudia; Bottiglieri, Lorenzo; Brochen, Stephane; Vandervorst, Wilfried; Favre, Wilfried; Jimenez, Carmen; Deschanvres, Jean-Luc; Nguyen, Ngoc Duy published an article in 2021. The article was titled 《Grain-boundary segregation of magnesium in doped cuprous oxide and impact on electrical transport properties》, and you may find the article in Scientific Reports.Name: Bis(acetylacetone)copper The information in the text is summarized as follows:

In this study, we report the segregation of magnesium in the grain boundaries of magnesium-doped cuprous oxide (Cu2O:Mg) thin films as revealed by atom probe tomog. and the consequences of the dopant presence on the temperature-dependent Hall effect properties. The incorporation of magnesium as a divalent cation was achieved by aerosol-assisted metal organic chem. vapor deposition, followed by thermal treatments under oxidizing conditions. We observe that, in comparison with intrinsic cuprous oxide, the electronic transport is improved in Cu2O:Mg with a reduction of resistivity to 13.3 ± 0.1 Ω cm, despite the reduction of hole mobility in the doped films, due to higher grain-boundary scattering. The Hall carrier concentration dependence with temperature showed the presence of an acceptor level associated with an ionization energy of 125 ± 9 meV, similar to the energy value of a large size impurity-vacancy complex. Atom probe tomog. shows a magnesium incorporation of 5%, which is substantially present at the grain boundaries of the Cu2O. In the experiment, the researchers used many compounds, for example, Bis(acetylacetone)copper(cas: 13395-16-9Name: 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. Name: Bis(acetylacetone)copper

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