Day: October 14, 2022

Qi, Shaopeng; Liu, Guoning; Chen, Jinxi; Lou, Yongbing; Zhao, Yixin published an article in 2021. The article was titled 《Surface Coordination Layer to Enhance the Stability of Plasmonic Cu Nanoparticles》, and you may find the article in Journal of Physical Chemistry C.Formula: C10H16CuO4 The information in the text is summarized as follows:

The fast oxidation of plasmonic Cu nanomaterials caused by surface-absorbed oxygen has been a serious problem and has hindered their applications in many aspects. Herein, a lollipop-shaped Cu@Cu2O/ZnO heterojunction with a core-shell head and a rodlike stem was successfully prepared using the colloidal chem. method, which exhibits ultralong-term stability against air oxidation in hexane. The enhanced stability of Cu@Cu2O/ZnO was due to the presence of zinc acetate, which resulted in the crystal face reconstruction of Cu@Cu2O and the formation of a thin surface carboxylate coordination layer on the partial surface of Cu@Cu2O. The passivation layer effectively hindered the absorption of surface oxygen, thus reducing the oxidation rate of Cu. Our current work was expected to provide new insights into the protection of active metal nanostructures. After reading the article, we found that the author used Bis(acetylacetone)copper(cas: 13395-16-9Formula: 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.Formula: C10H16CuO4

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

In 2022,Mosaferi, M.; Selles, P.; Miteva, T.; Ferte, A.; Carniato, S. published an article in Journal of Physical Chemistry A. The title of the article was 《Interpretation of Shakeup Mechanisms in Copper L-Shell Photoelectron Spectra》.Recommanded Product: Bis(acetylacetone)copper The author mentioned the following in the article:

We report on an original full ab initio quantum mol. approach designed to simulate Cu 2p X-ray photoelectron spectra. The description includes electronic relaxation/correlation and spin-orbit coupling effects and is implemented within nonorthogonal sets of MOs for the initial and final states. The underlying mechanism structuring the Cu 2p photoelectron spectra is clarified thanks to a correlation diagram applied to the CuO4C6H6 paradigm. This diagram illustrates how the energy drop of the Cu 3d levels following the creation of the Cu 2p core hole switches the nature of the highest singly occupied MO (H-SOMO) from dominant metal to dominant ligand character. It also reveals how the repositioning of the Cu 3d levels induces the formation of new bonding and antibonding orbitals from which shakeup mechanisms toward the relaxed H-SOMO operate. The specific nature, ligand → ligand and metal → ligand, of these excitations building the satellite lines is exposed. Our approach finally applied to the real Cu(acac)2 system clearly demonstrates how a definite interpretation of the XPS spectra can be obtained when a correct evaluation of binding energies, intensities, and relative widths of the spectral lines is achieved. After reading the article, we found that the author used 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”

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”

In 2019,Macromolecular Rapid Communications included an article by Wang, Jian; Wu, Zhigang; Wang, Guowei; Matyjaszewski, Krzysztof. Safety of Cupric bromide. The article was titled 《In Situ Crosslinking of Nanoparticles in Polymerization-Induced Self-Assembly via ARGET ATRP of Glycidyl Methacrylate》. The information in the text is summarized as follows:

Polymerization-induced self-assembly (PISA) and in situ crosslinking of the formed nanoparticles are successfully realized by activators regenerated by electron-transfer atom transfer radical polymerization (ARGET ATRP) of glycidyl methacrylate (GMA) or a mixture of GMA/benzyl methacrylate (BnMA) monomers in ethanol. Poly(oligo(ethylene oxide) Me ether methacrylate) was employed as macroinitiator/stabilizer, and a cupric bromide/tris(pyridin-2-ylmethyl)amine complex as catalyst. Tin(2-ethylhexanoate) was used as reducing agent for ARGET ATRP, and simultaneously acted as a catalyst for ring-opening polymerization of oxirane ring in GMA. The kinetics shows that the double bond in GMA was completely polymerized in 4.0 h, while only a 33% conversion of oxirane ring in GMA was reached at 117.0 h. Such a large difference would guarantee a smooth PISA and a subsequent in situ crosslinking of formed nanoparticles. The transmission electron microscopy and dynamic light scattering show spherical nanoparticles formed. With a feed molar ratio [BnMA]0/[GMA]0 = 150/50, 100/100, and 50/150, the nanoparticles formed in ethanol can dissociate or swell in toluene. When pure GMA was used, the solid nanoparticles were observed in toluene or ethanol. The ARGET ATRP provides an efficient strategy to stabilize the nanoparticles formed in the PISA of GMA-containing system. After reading the article, we found that the author used 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”

Beagan, Abeer M.; Alghamdi, Ahlam A.; Lahmadi, Shatha S.; Halwani, Majed A.; Almeataq, Mohammed S.; Alhazaa, Abdulaziz N.; Alotaibi, Khalid M.; Alswieleh, Abdullah M. published an article in 2021. The article was titled 《Folic acid-terminated poly(2-diethyl amino ethyl methacrylate) brush-gated magnetic mesoporous nanoparticles as a smart drug delivery system》, and you may find the article in Polymers (Basel, Switzerland).Computed Properties of Br2Cu The information in the text is summarized as follows:

Currently, chemotherapy is an important method for the treatment of various cancers. Nevertheless, it has many limitations, such as poor tumor selectivity and multi-drug resistance. It is necessary to improve this treatment method by incorporating a targeted drug delivery system aimed to reduce side effects and drug resistance. The present work aims to develop pH-sensitive nanocarriers containing magnetic mesoporous silica nanoparticles (MMSNs) coated with pH-responsive polymers for tumor-targeted drug delivery via the folate receptor. 2-Diethyl amino Et methacrylate (DEAEMA) was successfully grafted on MMSNs via surface initiated ARGET atom transfer radical polymerization (ATRP), with an average particle size of 180 nm. The end groups of poly (2-(diethylamino)ethyl methacrylate) (PDEAEMA) brushes were converted to amines, followed by a covalent bond with folic acid (FA) as a targeting agent. FA conjugated to the nanoparticle surface was confirmed by XPS. pH-Responsive behavior of PDEAEMA brushes was investigated by Dynamic Light Scattering (DLS). The nanoparticles average diameters ranged from ca. 350 nm in basic media to ca. 650 in acidic solution Multifunctional pH-sensitive magnetic mesoporous nanoparticles were loaded with an anti-cancer drug (Doxorubicin) to investigate their capacity and long-circulation time. In a cumulative release pattern, doxorubicin (DOX) release from nano-systems was ca. 20% when the particle exposed to acidic media, compared to ca. 5% in basic media. The nano-systems have excellent biocompatibility and are minimally toxic when exposed to MCF-7, and -MCF-7 ADR cells. In the experiment, the researchers used many compounds, for example, Cupric bromide(cas: 7789-45-9Computed Properties 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.Computed Properties of Br2Cu

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

In 2022,Pushpalatha, Nataraj; Abraham, Elezabeth V.; Saravanan, Govindachetty published an article in New Journal of Chemistry. The title of the article was 《Pt-Cu nanoalloy catalysts: compositional dependence and selectivity for direct electrochemical oxidation of formic acid》.Computed Properties of C10H16CuO4 The author mentioned the following in the article:

Tuning catalytic activity without increasing the platinum (Pt) load in electrode catalysts is one of the essential steps to realizing a viable fuel cell technol. on a larger scale. The formation of a Pt-alloy phase with various compositions may enhance the catalytic activity without increasing the Pt load. In this work, we report the compositional dependence of Pt-Cu nanoalloy catalysts for direct formic acid (FA) oxidation without changing the Pt load. Pt-Cu nanoalloy catalysts with various compositions (Pt : Cu = 3 : 1, 1 : 1 and 1 : 3) were prepared by a thermal reduction method using stoichiometric amounts of Pt and Cu precursors at various set temperatures (500 and 800°C), where the Pt loading (5 wt%) was maintained the same for all the tested catalytic compositions The formation of the Pt-Cu alloy phase was confirmed by pXRD as the characteristic diffraction peaks were shifted to higher diffraction angles when compared with those of the pure phase of Pt. The average particle sizes of Pt3Cu, PtCu and PtCu3 are 5, 3, and 20 nm, resp. Although of larger particle size and lower electrochem. surface area than com. Pt and the other Pt3Cu and PtCu catalysts, the PtCu3 nanoalloy catalyst showed a much-improved direct FA oxidation performance both in terms of mass and specific catalytic activity when compared with the other catalysts, implying the intrinsic catalytic activity of the PtCu3 nanoalloy phase. The Pt-Cu nanoalloy catalysts showed selectivity for the direct electrochem. oxidation of FA over other fuels (e.g., methanol and ethanol). Although the multi-cycle performance of all the Pt-Cu nanoalloy catalysts decreased with the increase of the number of cycles, the catalytic performance of the PtCu3 nanoalloy catalyst was still higher in the tested 1000 cycles when compared with that of the other Pt3Cu and PtCu nanoalloy catalysts and the com. Pt catalyst. In the experiment, the researchers used many compounds, for example, Bis(acetylacetone)copper(cas: 13395-16-9Computed Properties of 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. Computed Properties of C10H16CuO4

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

In 2019,Journal of Molecular Structure included an article by Hajlaoui, Fadhel; Hadj Sadok, Ines Ben; Aeshah, H. Alamri; Audebrand, Nathalie; Roisnel, Thierry; Zouari, Nabil. HPLC of Formula: 7789-45-9. The article was titled 《Synthesis, crystal structures, second harmonic generation response and temperature phase transitions of two noncentrosymmetric Cu(II)-hybrid halides compounds: [(R)-C7H16N2][CuX4] (X = Cl or Br)》. The information in the text is summarized as follows:

(R)-(+)-3-aminoquinuclidine was used in the synthesis of [(R)-C7H16N2][CuCl4] (1) and [(R)-C7H16N2][CuBr4] (2), which both contain similar [CuX4]2- anions (X = Cl or Br). The structures of the two compounds were determined using single-crystal x-ray diffraction. The use of enantiomerically pure sources of (R)-C7H14N2 forces crystallog. noncentrosymmetry. These materials crystallize in the chiral space group P212121, which exhibits the enantiomorphic crystal class 222 (D2). In the mol. arrangement, the [CuX4]2- anions are linked to the organic cations through N-H···X and C-H···X H bonds to form cation-anion-cation mol. units, which are held together by offset face-to-face interactions giving a three-dimensional network. Thermal stability of the crystals was ascertained by TG measurement. 1 And 2 display several phases transition with higher transition temperature at T = 100°. The Kurtz and Perry powder method using Nd:YAG laser shows that their 2nd harmonic generation (SHG) efficiencies are ∼0.81 and 0.82 times as large as that of KH2PO4 (KDP), resp. Such a chiral hybrid metal halides skeleton could provide a new platform for future engineering in the areas including information storage, light modulators and optoelectronic functionalities. After reading the article, we found that the author used Cupric bromide(cas: 7789-45-9HPLC of Formula: 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.HPLC of Formula: 7789-45-9

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

The author of 《Growing Polymer Brushes from a Variety of Substrates under Ambient Conditions by Cu0-Mediated Surface-Initiated ATRP》 were Yan, Wenqing; Fantin, Marco; Ramakrishna, Shivaprakash; Spencer, Nicholas D.; Matyjaszewski, Krzysztof; Benetti, Edmondo M.. And the article was published in ACS Applied Materials & Interfaces in 2019. Application In Synthesis of Cupric bromide The author mentioned the following in the article:

Cu0-mediated surface-initiated atom transfer radical polymerization (Cu0 SI-ATRP) is a highly versatile, oxygen-tolerant, and extremely controlled polymer-grafting technique that enables the modification of flat inorganic surfaces, as well as porous organic and polymeric supports of different compositions Exploiting the intimate contact between a copper plate, acting as a source of catalyst and reducing agent, and an initiator-bearing support, Cu0 SI-ATRP enables the rapid growth of biopassive, lubricious brushes from large flat surfaces, as well as from various organic supports, including cellulose fibers and elastomers, using microliter volumes of reaction mixtures, and without the need for deoxygenation of reaction mixtures or an inert atm. Thanks to a detailed anal. of its mechanism and the parameters governing the polymerization process, polymer brush growth by Cu0 SI-ATRP can be precisely modulated and adapted to be applied to morphol. and chem. different substrates, setting up the basis for translating SI-ATRP methods from academic studies into technol. relevant surface-modification approaches. 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)

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”

《Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+ Doping Strategy》 was written by Liu, Pengyun; Yang, Xiaoqing; Chen, Yonghui; Xiang, Huimin; Wang, Wei; Ran, Ran; Zhou, Wei; Shao, Zongping. Application In Synthesis of Cupric bromide And the article was included in ACS Applied Materials & Interfaces in 2020. The article conveys some information:

Although organic-inorganic halide perovskite solar cells (PSCs) have shown dramatically enhanced power conversion efficiencies (PCEs) in the last decade, their long-term stability is still a critical challenge for commercialization. To address this issue, tremendous research efforts have been devoted to exploring all-inorganic PSCs because of their intrinsically high structural stability. Among them, CsPbIBr2-based all-inorganic PSCs have drawn increasing attention owing to their suitable band gap and favorable stability. However, the PCEs of CsPbIBr2-based PSCs are still far from those of their organic-inorganic counterparts, thus inhibiting their practical applications. Herein, we demonstrate that by simply doping an appropriate amount of Cu2+ into a CsPbIBr2 perovskite lattice (0.5 at. % to Pb2+), the perovskite crystallinity and grain size are increased, the perovskite film morphol. is improved, the energy level alignment is optimized, and the trap d. and charge recombination are reduced. As a consequence, a decent PCE improvement from 7.81 to 10.4% is achieved along with an enhancement ratio of 33% with a CsPbIBr2-based PSC. Furthermore, the long-term stability of CsPbIBr2-based PSCs against moisture and heat also remarkably improved by Cu2+ doping. This work provides a facile and effective route to improve the PCE and long-term stability of CsPbIBr2-based all-inorganic PSCs. In the experiment, the researchers used 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”

Nanda, Aman; Singh, Vivek; Jha, Ravindra kumar; Sinha, Jyoti; Avasthi, Sushobhan; Bhat, Navakanta published an article in 2021. The article was titled 《Growth-Temperature Dependent Unpassivated Oxygen Bonds Determine the Gas Sensing Abilities of Chemical Vapor Deposition-Grown CuO Thin Films》, and you may find the article in ACS Applied Materials & Interfaces.Application of 13395-16-9 The information in the text is summarized as follows:

CuO is a multifunctional metal oxide excellent for chemiresistive gas sensors. In this work, we report CuO-based NO2 sensors fabricated via chem. vapor deposition (CVD). CVD allows great control on composition, stoichiometry, impurity, roughness, and grain size of films. This endows sensors with high selectivity, responsivity, sensitivity, and repeatability, low hysteresis, and quick recovery. All these are achieved without the need of expensive and unscalable nanostructures, or heterojunctions, with a technol. mature CVD. Films deposited at very low temperatures (≤350°C) are sensitive but slow due to traps and small grains. Films deposited at high temperatures (≥550°C) are not hysteretic but suffer from low sensitivity and slow response due to lack of surface states. Films deposited at optimum temperatures (350-450°C) combine the best aspects of both regimes to yield NO2 sensors with a response of 300% at 5 ppm, sensitivity limit of 300 ppb, hysteresis of <20%, repeatable performance, and recovery time of ~1 min. The work demonstrates that CVD might be a more effective way to deposit oxide films for gas sensors. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Application 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. Application of 13395-16-9

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