Day: October 13, 2022

Han, Yulian; Hamada, Morihiko; Chang, I-Ya; Hyeon-Deuk, Kim; Kobori, Yasuhiro; Kobayashi, Yoichi published an article in 2021. The article was titled 《Fast T-Type Photochromism of Colloidal Cu-Doped ZnS Nanocrystals》, and you may find the article in Journal of the American Chemical Society.COA of Formula: C10H16CuO4 The information in the text is summarized as follows:

This paper reports on durable and nearly temperature-independent (at 298-328 K) T-type photochromism of colloidal Cu-doped ZnS nanocrystals (NCs). The color of Cu-doped ZnS NC powder changes from pale yellow to dark gray by UV light irradiation, and the color changes back to pale yellow on a time scale of several tens of seconds to minutes after stopping the light irradiation, while the decoloration reaction is accelerated to submillisecond in solutions This decoloration reaction is much faster than those of conventional inorganic photochromic materials. The origin of the reversible photoinduced coloration is revealed to be a strong optical transition involving a delocalized surface hole which survives over a minute after escaping from intraparticle carrier recombination due to electron-hopping dissociation ZnS NCs can be easily prepared in a water-mediated one-pot synthesis and are less toxic. Therefore, they are promising for large-scale photochromic applications such as windows and building materials in addition to conventional photochromic applications. Moreover, the present study demonstrates the importance of excited carrier dynamics and trap depths, resulting in coloration over minutes not only for photochromic nanomaterials but also for various advanced photofunctional materials, such as long persistent luminescent materials and photocatalytic nanomaterials. The experimental part of the paper was very detailed, including the reaction process of 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”

In 2022,Ghosh, Boyli; Banerjee, Ambar; Roy, Lisa; Manna, Rabindra Nath; Nath, Rounak; Paul, Ankan published an article in Angewandte Chemie, International Edition. The title of the article was 《The Role of Copper Salts and O2 in the Mechanism of C≃N Bond Activation for Facilitating Nitrogen Transfer Reactions》.Synthetic Route of Br2Cu The author mentioned the following in the article:

CN bond scission can be a potential avenue for the functionalization of chem. bonds. We have conducted a computational study, using d. functional theory (DFT) and ab initio multireference CASSCF methods, to unravel the intricate mechanistic pathways traversed in the copper-promoted, dioxygen-assisted reaction for the formation of aryl isocyanate species from aryl aldehyde. This aryl isocyanate species acts as an active species for CN bond cleavage of coordinated cyanide anion enabling nitrogen transfer to various aldehydes. Electronic structure anal. revealed that under all the reaction conditions radical-based pathways are operative, which is in agreement with the exptl. findings. The major driving force is a CuII/I redox cycle initiated by single-electron transfer from the carbon center of the nitrile moiety. Our study reveals that the copper salts act as the “”electron pool”” in this unique nitrogen transfer reaction forming an aryl isocyanate species from aryl aldehydes. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu) 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.Synthetic Route of Br2Cu

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

In 2022,Abid Derbel, Marwa; Nasr, Samia; Naili, Houcine; Rekik, Walid published an article in Inorganic Chemistry Communications. The title of the article was 《Thermal behavior and optical properties of a new dimeric 1D mixed halide hybrid material [CuBrCl(C2H8N2)]》.Synthetic Route of Br2Cu The author mentioned the following in the article:

A new organic-inorganic Cu-based hybrid material containing ethylenediamine as organic part and mixed bromide/chloride as halide ions was synthesized and crystallog. characterized. At room temperature, this new compound adopts the monoclinic symmetry (space group P21/m) and presents the following unit-cell parameters: a 6.927(3), b 5.884(3), c 8.399(4) Å, β 94.856(13)° and Z = 2. The 1-dimensional structure of the title compound consists of infinite dimeric chains running along the crystallog. b axis. These chains are constructed from dimeric units [Cu2Br2Cl2(C2H8N2)2] linked together by sharing (Br/Cl) atoms. N-H… Br/Cl H bonds guarantee the connection between the dimeric chains and the cohesion of the structure. The TGA shows that this new hybrid material decomposes in two stages giving rise to the Cu oxide as final residue. The UV-visible absorption shows that the new complex undergoes three optical absorption bands at 238, 317 and 686 nm, resp. From the gap energy value of 2.92 eV the new mixed halide compound is a semiconductor material. The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu)

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.Synthetic Route of Br2Cu

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

Safety of Cupric bromideIn 2020 ,《Synthesis of sugar-based macromolecules via sono-ATRP in miniemulsion》 was published in Polymers for Advanced Technologies. The article was written by Zaborniak, Izabela; Surmacz, Karolina; Chmielarz, Pawel. The article contains the following contents:

Ultrasound-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is used for the first time for the preparation of complex macromol. architectures by a facile two-step synthetic route. Initially, esterification reaction of sucrose or lactulose with α-bromoisobutyryl bromide (BriBBr) is conducted to receive multifunctional ATRP macroinitiators with 8 initiation sites, followed by polymerization of Bu acrylate (BA) forming arms of the star-like polymers. The brominated lactulose-based mol. was examined as an ATRP initiator by determining the activation rate constant (ka) of the catalytic process in the presence of a copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) catalyst in both organic solvent and for the first time in miniemulsion media, resulting in ka = (1.03 ± 0.01) × 104 M-1s-1 and ka = (1.16 ± 0.56) × 103 M-1s-1, resp. Star-like macromols. with a sucrose or lactulose core and poly(Bu acrylate) (PBA) arms were successfully received using different catalyst concentration Linear kinetics and a well-defined structure of synthesized polymers reflected by narrow mol. weight distribution (Mw/Mn = 1.46) indicated 105 ppm weight of catalyst loading as concentration to maintain controlled manner of polymerization process. 1H NMR anal. confirms the formation of new sugar-inspired star-shaped polymers. 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”

The author of 《Thermodynamic modeling of the solubility of acetylacetonate-type metal precursors in supercritical carbon dioxide using the PC-SAFT equation of state》 were Ushiki, Ikuo; Sato, Yoshiyuki; Takishima, Shigeki; Inomata, Hiroshi. And the article was published in Journal of Chemical Engineering of Japan in 2019. Related Products of 13395-16-9 The author mentioned the following in the article:

Thermodn. modeling of the solubilities of various acetylacetonate-type metal precursors in supercritical carbon dioxide was performed using the PC-SAFT (perturbed-chain statistical associating fluid theory) equation of state. Pure component parameters for the metal precursors (segment number, segment diameter, and dispersion energy) were determined by fitting to solubility data obtained from the literature. The PC-SAFT equation of state could correlate the literature data over wide temperature and pressure ranges for various precursors. The pure component PC-SAFT parameters obtained from these correlations were found to vary systematically with changes in the properties of the metal precursors, such as the molar masses of the precursors and of the metal centers, which could be generalized based on the phys. meaning of each parameter. The generalized PC-SAFT parameters could reproduce the solubilities of the metal precursors in supercritical carbon dioxide to within 30% average relative deviation under almost all conditions, especially at temperature below 393 K. The results came from multiple reactions, including the reaction of Bis(acetylacetone)copper(cas: 13395-16-9Related Products 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. Related Products of 13395-16-9

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

《Enhanced oxygen reduction activity of PtCu nanoparticles by morphology tuning and transition-metal doping》 was published in International Journal of Hydrogen Energy in 2020. These research results belong to Wu, Dengfeng; Yang, Yang; Dai, Changqing; Cheng, Daojian. Formula: C10H16CuO4 The article mentions the following:

Developing active and durable electrocatalysts for oxygen reduction reaction (ORR) is of great significance in proton exchange membrane fuel cells (PEMFCs). Herein, a facile strategy is developed to synthesize PtCu nanoparticles with enhanced ORR performance through morphol. tuning and transition-metal doping. Two distinct PtCu nanoparticles, namely nanooctahedrons (NOs) and nanospheres (NSs), are selectively synthesized in presence or absence of W(CO)6 via a facile one-pot method. Furthermore, by introducing a small amount of third transition metal, M-doped (M = Sc, Y, La, Gd, Fe) PtCu NOs are obtained. Electrocatalytic results suggest that the ORR performance of PtCu NOs is better than that of PtCu NSs due to the morphol. advantages. And the ORR performance of PtCuM NOs is further promoted since the doping effect of transition metals compared to that of PtCu NOs. Particularly, PtCuSc NOs exhibit remarkable mass activity (1.652 mA μg-1Pt) and specific activity (2.093 mA cm-2), which are 9.9 and 7.2 times higher than that of com. Pt/C catalysts at 0.8 V (vs. RHE). Moreover, after accelerated stability tests, the loss of mass activity for PtCuSc NOs is only 9.2%, which is much lower than that of PtCu NOs (16.5%) and com. Pt/C (44.3%). This work provides a feasible idea to boost the ORR performances of Pt-based nanoparticles. The experimental process involved the reaction of 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”

Liu, Youxing; Wei, Yanan; Liu, Minghui; Bai, Yichao; Liu, Guocai; Wang, Xinyu; Shang, Shengcong; Gao, Wenqiang; Du, Changsheng; Chen, Jianyi; Liu, Yunqi published an article in 2021. The article was titled 《Two-Dimensional Metal-Organic Framework Film for Realizing Optoelectronic Synaptic Plasticity》, and you may find the article in Angewandte Chemie, International Edition.COA of Formula: C10H16CuO4 The information in the text is summarized as follows:

2D metal-organic framework (MOF) film as the active layer show promising application prospects in various fields including sensors, catalysis, and electronic devices. However, exploring the application of 2D MOF film in the field of artificial synapses has not been implemented yet. In this work, we fabricated a novel 2D MOF film (Cu-THPP, THPP=5,10,15,20-Tetrakis(4-hydroxyphenyl)-21H,23H-porphine), and further used it as an active layer to explore the application in the simulation of human brain synapses. It shows excellent light-stimulated synaptic plasticity properties, and exhibits the foundation function of synapses such as long-term plasticity (LTP), short-term plasticity (STP), and the conversion of STP to LTP. Most critically, the MOF based artificial synaptic device exhibits an excellent stability in atm. This work opens the door for the application of 2D MOF film in the simulation of human brain synapses. 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) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. COA of Formula: C10H16CuO4

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

Li, Menggang; Zhao, Zhonglong; Xia, Zhonghong; Luo, Mingchuan; Zhang, Qinghua; Qin, Yingnan; Tao, Lu; Yin, Kun; Chao, Yuguang; Gu, Lin; Yang, Weiwei; Yu, Yongsheng; Lu, Gang; Guo, Shaojun published an article in 2021. The article was titled 《Exclusive Strain Effect Boosts Overall Water Splitting in PdCu/Ir Core/Shell Nanocrystals》, and you may find the article in Angewandte Chemie, International Edition.Recommanded Product: 13395-16-9 The information in the text is summarized as follows:

Core/shell nanocatalysts are a class of promising materials, which achieve the enhanced catalytic activities through the synergy between ligand effect and strain effect. However, it has been challenging to disentangle the contributions from the two effects, which hinders the rational design of superior core/shell nanocatalysts. Herein, we report precise synthesis of PdCu/Ir core/shell nanocrystals, which can significantly boost oxygen evolution reaction (OER) via the exclusive strain effect. The heteroepitaxial coating of four Ir at. layers onto PdCu nanoparticle gives a relatively thick Ir shell eliminating the ligand effect, but creates a compressive strain of ca. 3.60%. The strained PdCu/Ir catalysts can deliver a low OER overpotential and a high mass activity. D. functional theory (DFT) calculations reveal that the compressive strain in Ir shell downshifts the d-band center and weakens the binding of the intermediates, causing the enhanced OER activity. The compressive strain also boosts hydrogen evolution reaction (HER) activity and the strained nanocrystals can be served as excellent catalysts for both anode and cathode in overall water-splitting electrocatalysis. In the part of experimental materials, we found many familiar compounds, such as Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: 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.Recommanded Product: 13395-16-9

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

COA of Formula: C10H16CuO4In 2020 ,《Thermoelasticity of Flexible Organic Crystals from Quasi-harmonic Lattice Dynamics: The Case of Copper(II) Acetylacetonate》 was published in Journal of Physical Chemistry Letters. The article was written by Maul, Jefferson; Ongari, Daniele; Moosavi, Seyed Mohamad; Smit, Berend; Erba, Alessandro. The article contains the following contents:

A computationally affordable approach, based on quasi-harmonic lattice dynamics, is presented for the quantum-mech. calculation of thermoelastic moduli of flexible, stimuli-responsive, organic crystals. The methodol. relies on the simultaneous description of structural changes induced by thermal expansion and strain. The complete thermoelastic response of the mech. flexible metal-organic Cu(II) acetylacetonate crystal is determined and discussed in the temperature range 0-300 K. The elastic moduli do not just shrink with temperature but they do so anisotropically. The present results clearly indicate the need for an explicit account of thermal effects in the simulation of mech. properties of elastically flexible organic materials. Indeed, predictions from standard static calculations on this flexible metal-organic crystal are off by up to 100%. In the experiment, the researchers used many compounds, for example, 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”

In 2019,Macromolecular Chemistry and Physics included an article by Zaborniak, Izabela; Chmielarz, Pawel. Application In Synthesis of Cupric bromide. The article was titled 《Temporally Controlled Ultrasonication-Mediated Atom Transfer Radical Polymerization in Miniemulsion》. The information in the text is summarized as follows:

Due to the increasing requirement for more environmentally and industrially relevant approaches in macromols. synthesis, ultrasonication-mediated atom transfer radical polymerization (sono-ATRP) in miniemulsion media is applied for the first time to obtain precisely defined poly(Bu acrylate) (PBA) and poly(Me methacrylate) (PMMA) homopolymers, and poly(Bu acrylate)-block-poly(tert-Bu acrylate) (PBA-b-PtBA) and poly(Bu acrylate)-block-poly(Bu acrylate) (PBA-b-PBA) copolymers. It is demonstrated in the reaction setup with strongly hydrophilic catalyst copper(II) bromide/tris(2-pyridylmethyl)amine (CuIIBr2/TPMA) responsible for two principal mechanisms – interfacial and ion-pair catalysis reflecting single-catalyst approach. This solution turns out to be an excellent tool in controlled preparation of well-defined polymers with narrow mol. weight distribution (up to ETH = 1.28) and preserves chain-end functionality (DCF = 0.02% to 0.32%). Temporal control over the polymer chain growth is successfully conducted by turning the ultrasonication on/off. Taking into consideration long OFF stage (92.5 h) during ultrasonication-induced polymerization in miniemulsion, synthesis is efficiently reinitiated without any influence on controlled characteristics maintaining the precise structure of received PBA homopolymers, confirmed by narrow mol. weight distribution (ETH = 1.26) and high retention of chain-end functionality (DCF = 0.01%). This procedure constitutes an excellent simple and eco-friendly approach in preparation of functional polymeric materials.Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide) 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.Application In Synthesis of Cupric bromide

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