Tag: 200-300

《Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu2Zn1-xCdxSnS4 Heterointerface for Photovoltaic Applications》 was published in ACS Applied Energy Materials in 2020. These research results belong to Rondiya, Sachin R.; Jadhav, Yogesh; Dzade, Nelson Y.; Ahammed, Raihan; Goswami, Tanmay; De Sarkar, Abir; Jadkar, Sandesh; Haram, Santosh; Ghosh, Hirendra N.. COA of Formula: C10H16CuO4 The article mentions the following:

To improve the constraints of kesterite Cu2ZnSnS4 (CZTS) solar cell, such as undesirable band alignment at p-n interfaces, bandgap tuning, and fast carrier recombination, cadmium (Cd) is introduced into CZTS nanocrystals forming Cu2Zn1-xCdxSnS4 through cost-effective solution-based method without postannealing or sulfurization treatments. A synergetic exptl.-theor. approach was employed to characterize and assess the optoelectronic properties of Cu2Zn1-xCdxSnS4 materials. Tunable direct band gap energy ranging from 1.51-1.03 eV with high absorption coefficient was demonstrated for the Cu2Zn1-xCdxSnS4 nanocrystals with changing Zn/Cd ratio. Such bandgap engineering in Cu2Zn1-xCdxSnS4 helps in effective carrier separation at interface. Ultrafast spectroscopy reveals a longer lifetime and efficient separation of photoexcited charge carriers in Cu2CdSnS4 (CCTS) nanocrystals compared to that of CZTS. It was found that there exists a type-II staggered band alignment at the CZTS (CCTS)/CdS interface, from cyclic voltammetric (CV) measurements, corroborated by first-principles d. functional theory (DFT) calculations, predicting smaller conduction band offset (CBO) at the CCTS/CdS interface as compared to the CZTS/CdS interface. These results point toward efficient separation of photoexcited carriers across the p-n junction in the ultrafast time scale and highlight a route to improve device performances. 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 2019,Journal of Physics: Condensed Matter included an article by Zhao, Z. Y.; Che, H. L.; Chen, R.; Wang, J. F.; Sun, X. F.; He, Z. Z.. Product Details of 7789-45-9. The article was titled 《Magnetism study on a triangular lattice antiferromagnet Cu2(OH)3Br》. The information in the text is summarized as follows:

Magnetism of Cu2(OH)3Br single crystals based on a triangular lattice is studied by means of magnetic susceptibility, pulsed-field magnetization, and sp. heat measurements. There are two inequivalent Cu2+ sites in an asym. unit. Both Cu2+ sublattices undergo a long-range antiferromagnetic (AFM) order at TN = 9.3 K. Upon cooling, an anisotropy crossover from Heisenberg to XY behavior is observed below 7.5 K from the anisotropic magnetic susceptibility. The magnetic field applied within the XY plane induces a spin-flop transition of Cu2+ ions between 4.9 T and 5.3 T. With further increasing fields, the magnetic moment is gradually increased but is only about half of the saturation of a Cu2+ ion even in 30 T. The individual reorientation of the inequivalent Cu2+ spins under field is proposed to account for the magnetization behavior. The observed spin-flop transition is likely related to one Cu site, and the AFM coupling among the rest Cu spins is so strong that the 30 T field cannot overcome the anisotropy. The temperature dependence of the magnetic sp. heat, which is well described by a sum of two gapped AFM contributions, is a further support for the proposed scenario. In the part of experimental materials, we found many familiar compounds, such as Cupric bromide(cas: 7789-45-9Product Details 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.Product Details of 7789-45-9

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

Application In Synthesis of Cupric bromideIn 2019 ,《Facile and efficient Cu(0)-mediated radical polymerization of pentafluorophenyl methacrylate grafting from poly(ethylene terephthalate) film》 appeared in European Polymer Journal. The author of the article were Nguyen, Thi Phuong Thu; Barroca-Aubry, Nadine; Dragoe, Diana; Mazerat, Sandra; Brisset, Francois; Herry, Jean-Marie; Roger, Philippe. The article conveys some information:

Grafting polymers bearing active esters, especially pentafluorophenyl methacrylate (PFPMA), onto or from surface is a promising approach towards the preparation of highly functional materials due to the ease in post-polymerization modification of their corresponding polymers. Herein, a handy and efficient chem. modification process is proposed to modify extreme surface of poly(ethylene terephthalate) (PET) films towards the final purpose of grafting PFPMA polymer from PET surface via surface-initiated Cu(0)-mediated radical polymerization The characteristics of modified surface were evaluated after each step using various techniques including water contact angle, attenuated total reflectance Fourier-transform IR spectroscopy, XPS, at. force microscopy, and scanning electron spectroscopy. Due to its robust conditions, the proposed approach allows grafting at ease PFPMA polymer from PET supporting surface, which not only enhances the reactivity of this inert material but also improves significantly the hydrophobicity of the surface. The experimental process involved the reaction of Cupric bromide(cas: 7789-45-9Application In Synthesis 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.Application In Synthesis of Cupric bromide

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

In 2022,Maalej, Wassim; Hajlaoui, Fadhel; Karoui, Karim; Audebrand, Nathalie; Roisnel, Thierry published an article in Journal of Solid State Chemistry. The title of the article was 《Crystal structure and semiconductor properties of copper(II) complex incorporating chiral (R)-(+)-α-Ethylbenzylammonium cations:[(R)-C9H14N]3[CuBr4].Br.》.SDS of cas: 7789-45-9 The author mentioned the following in the article:

The mol. organic-inorganic hybrid halometallate [(R)-C9H14N]3[CuBr4].Br was synthesized by a slow evaporation method. The single-crystal x-ray diffraction experiment evidences that [(R)-C9H14N]3[CuBr4].Br crystallizes in the monoclinic system with the noncentrosym. space group P21 at T = 150K. The compound displays a zero-dimensional (0D) structure which consists in 3 chiral [(R)-C9H14N]+ cations, 1 anionic [CuBr4]2-, and free Br- ion. The Cu(II) has an intermediate geometry between regular tetrahedron (Td) and square planar (D4h). In the crystal structure, the cations and anions are arranged in alternating stacks which are interconnected via H bonding contacts N-H···Br. This hybrid compound presents good thermal stability up to 370 K. The DSC and elec. measurements show that no phase transition occurs in the compound over the temperature range 223-423 K. Optical absorption measurements suggest that [(R)-C9H14N]3[CuBr4].Br has a narrow direct optical band gap (Eg) of ∼2.15 eV which makes it a promising material in optoelectronic devices. In the experiment, the researchers 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”

In 2022,Kim, Jaewon; Kendall, Owen; Ren, Jiawen; Murdoch, Billy J.; McConville, Christopher F.; van Embden, Joel; Della Gaspera, Enrico published an article in ACS Applied Materials & Interfaces. The title of the article was 《Highly Conductive and Visibly Transparent p-Type CuCrO2 Films by Ultrasonic Spray Pyrolysis》.Application of 13395-16-9 The author mentioned the following in the article:

The development of high-performing p-type transparent conducting oxides will enable immense progress in the fabrication of optoelectronic devices including invisible electronics and all-oxide power electronics. While n-type transparent electrodes have already reached widespread industrial production, the lack of p-type counterparts with comparable transparency and conductivity has created a bottleneck for the development of next-generation optoelectronic devices. In this work, we present the fabrication of delafossite copper chromium oxide p-type transparent electrodes with outstanding optical and elec. properties. These layers were deposited using ultrasonic spray pyrolysis, a wet chem. method that is fast, simple, and scalable. Through careful screening of the deposition conditions, highly crystalline, dense, and smooth CuCrO2 coatings were obtained. A detailed investigation of the role played by the deposition temperature and the cation ratio enabled the properties of the prepared layers to be reliably tuned, as verified using X-ray diffraction, XPS, optical spectroscopy, Hall effect measurements, and electron and at. force microscopies. We demonstrate record conductivities for solution-processed CuCrO2, exceeding 100 S cm-1, and we also obtained the highest value for two sep. figures of merit for p-type transparent conducting oxides. These performances position solution-deposited CuCrO2 as the leading p-type transparent-conducting oxide currently available. In the experiment, the researchers used many compounds, for example, 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”

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”

《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”

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”

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”

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”