Category: copper-catalyst

Because a catalyst decreases the height of the energy barrier, Computed Properties of CCuNS, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.Computed Properties of CCuNS, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a article£¬once mentioned of Computed Properties of CCuNS

Spin-coated copper(I) thiocyanate as a hole transport layer for perovskite solar cells

Application of a low-cost and efficient p-type inorganic hole-transporting material, copper thiocyanate (CuSCN), on mesoporous n-i-p-configurated perovskite-based devices was conducted in this study. Diethylsulfide was chosen for the preparation of precursor solution in order to deposit CuSCN layer on perovskite without degrading it. Topographical, elemental, and electrical characterizations of spin-coated CuSCN layers were performed using XRD, AFM, SEM, XPS, UPS, and UV-Vis studies. A power conversion efficiency exceeding 11.02% with an open-circuit voltage of 0.83?V was succeeded in the perovskite solar cells under full sun illumination. Low-temperature solution process used for the deposition of CuSCN and a fast solvent removal method allowed the creation of compact, highly conformal CuSCN layers that facilitate rapid carrier extraction and collection. The differences in series and recombination resistances for CuSCN-free and CuSCN-containing cells were also determined using impedance spectroscopy (IS) analysis. Moreover, the effect of TiO2 layer thickness on the cell performance was studied where these TiO2 layers were used not only for electron extraction and transportation, but also as hole blocking layer in perovskite solar cells. The impedance spectroscopy results were also consistent with the differently configurated cell performances. This work shows a well-defined n-i-p perovskite cell with optimized layers which utilize low-cost and abundant materials for photovoltaic applications.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1111-67-7, help many people in the next few years.Computed Properties of CCuNS

Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Electric Literature of 1111-67-7, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1111-67-7, molcular formula is CCuNS, introducing its new discovery.

Enantioselective alpha-C-H functionalization of amides with indoles triggered by radical trifluoromethylation of alkenes: Highly selective formation of C?CF3 and C?C bonds

A dual copper/chiral phosphoric acid-catalyzed asymmetric tandem remote C(sp3)-H/unactivated alkene functionalization reaction triggered by radical trifluoromethylation of unactivated alkenes for the concomitant construction of C?CF3 and C?C bonds was described. This approach provided an efficient method for the synthesis of valuable chiral trifluoromethylated indole derivatives with excellent regio-, chemo-, and good enantioselectivity.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Synthetic Route of 1111-67-7, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. Synthetic Route of 1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article, authors is Tzeng, Biing-Chiau£¬once mentioned of Synthetic Route of 1111-67-7

Polyrotaxane frameworks containing N,N?,N?-(4,4?, 4?-nitrilotris(4,1-phenylene))triisonicotinamide: Structural and luminescent properties

The reaction of a C3-symmetric tridentate ligand, N,N?,N?-(4,4?,4?-nitrilotris(4,1-phenylene)) triisonicotinamide (L), with various d10-metal salts of CuI, Cu(SCN), and M(ClO4)2 (M = Zn, Cd) led to four metal-organic materials of {[(Cu2I2)(L)2] ¡¤4DMF¡¤2MeOH}n (1), {[Cu(L)2(NCS) 2]¡¤3DMF}n (2), and {[M(L)2(ClO 4)2]¡¤4EtOH}n (M = Zn 3 and Cd 4), respectively, which have been isolated and structurally characterized by X-ray diffraction studies. The X-ray analysis revealed that the interlocking of the 1-D double-zigzag chains of 1-4 into the macrocycles of the adjacent chains generates a novel 2-D (1-D ? 2-D) polyrotaxane framework. In these 2-D polyrotaxane frameworks, the C3-symmetric tridentate ligand, L, only adopts a mu2-bridging mode, and the third arm is free. In addition, 1-4 are all emissive with dual emissions (431-452 and 558-570 nm) in the solid state at room temperature and at 77 K, which are suggested to be due to an intraligand transition of L based on the high similarities in emission energies to that of L.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Synthetic Route of 1111-67-7, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1111-67-7, molcular formula is CCuNS, introducing its new discovery.

Electrodeposition of porous CuSCN layers as hole-conducting material for perovskite solar cells

One of the most promising among hole-conducting materials, CuSCN, was prepared for the first time in a form of porous layers for potential applications in inverted perovskite solar cells.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Reference of 1111-67-7, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a article£¬once mentioned of 1111-67-7

Diaza Crown Ethers and Cryptants as Bridging Ligands in Lamellar Copper(I) Coordination Polymers

CuX-based coordination polymers (X = I, CN, SCN) with diazacrown ethers or cryptands as bridging ligands have been prepared by reaction of CuX with appropriate macrocycle in acetonnitrile/hexane solution at 100C. Whereas [CuI (1,7-DA12C4)] (1) and [CuI(1,10-DA18C6)] (2) (1,7-DA12C4 = 1,7-diaza-12-crown-4, 1,10-DA18C6 = 1,10-diaza-18-crown-6) are both monomeric, ?1[(CuI)2(1,10-DA18C6)] (3) contains infinite chains in which (CuI)2 rings are linked in a mu-N1,N10 manner by thiacrown ether moieties. The distorted tetrahedral coordination of the CuI atoms in 3 is completed by a weak Cu…O interaction (2.393(7) A) to a 1,10-DA18C6 oxygen atom. ? 2[(Cu4I4)(1,10-DAcrypt)2] (4), (1,10-DAcrypt = 1,10-diaza-cryptand [2.2.2]), ? 2[{(CuCN)6(1,7-DA12C4)4]¡¤2CH 3CN (5) and ?2[(CuSCN)2 (1,10-DA18C6] (6) all exhibit lamellar networks with respectively Cu 4I4 cubes, (CuCN)6 hexagons and ?1[(CuSCN)2] double chains as their CuX substructures. 4 can imbibe up to 0.64 mol KNO3/mol cryptand and 6 up to 0.35 mol KNO3/mol 1,10-DA18C6 as a guest lattice. Crystal structures are reported for 1-6, thermal analysis data (TG/DTA) for complexes 2, 3 and 5.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Synthetic Route of 1111-67-7, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article£¬once mentioned of 1111-67-7

Synthesis, crystal structure, and characterization of a novel supramolecular coordination polymer [Cu(Pcba)3]n

The authors present a novel compound [Cu(Pcba)2]n synthesized from the reaction between copper(I) thiocyanate and the ligand Pcba (Pcba = 2-pyrazine carboxylic acid), which exhibits a one-dimensional structure and has been characterized by Xray crystallography. In the process of synthesis, copper(I) ion has been oxidized into copper(II). This compound crystallizes in monoclinic, space group P2 (1)/c with cell parameters of a = 5.0387(4) A, b = 15.3317(13) A, c = 7.0720(6) A, beta = 106.63(0). The central ion Cu(II) is six-coordinated in a typical hexahedral geometry by four oxygen atoms and two nitrogen atoms in Pcba. Except chelating with two Pcbas, each central ion Cu(II) is extended to form one-dimensional linear structure through Pcba as the bridge. This compound was further characterized with IR spectra, fluorescence properties, UV-vis properties, and thermal analysis. Copyright Taylor & Francis Group, LLC 2013.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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A process for the preparation of the nitrile compound of the carbonitriding method (by machine translation)

The present invention provides a method for the preparation of nitrile compounds cyanide, the organic halide or to be halide with a readily available and inexpensive CO2 , NH3 And a reducing agent, in the presence of a transition metal catalyst of selective carbonitriding reaction, to obtain the target product with a nitrile compound. In the present invention using a brand-new reaction route, through the metal catalytic CO2 And the NH3 The reaction, “one-pot” directly realize halide and intended to halide removing (intended to be) […], avoids the need to use the traditional cyano reaction equivalent highly toxic cyanide issues, at the same time provides a direct, the new method of preparing isotope-labeled nitrile compounds, can be used for medical, tracing, in biological and pharmaceutical research. (by machine translation)

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Related Products of 1111-67-7, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. Related Products of 1111-67-7, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article, authors is Haider, Syed Zulqarnain£¬once mentioned of Related Products of 1111-67-7

A comparative study of interface engineering with different hole transport materials for high-performance perovskite solar cells

In recent years, perovskite solar cells (PSCs) are performing remarkably with efficiency more than 20%. Performance can further be improved by controlling charge transfer and recombination at electron transport material (ETM)/absorber and absorber/hole transport material (HTM) interfaces which ultimately define conduction band offset (CBO) and valence band offset (VBO). Therefore, it is worthwhile to investigate optimum band offset to get efficient PSCs. Spiro-MeOTAD is organic HTM commonly used in PSCs while CuI, CuSCN and Cu2O are inorganic HTMs which may replace spiro-MeOTAD due to their low cost and stability. In this paper, device simulation approach is used to analyze the effect of CBO, VBO and interface defect density (Nt) on the performance of PSCs for spiro-MeOTAD as organic HTM and its detailed comparison is made with Cu-based inorganic HTMs to get better insight about the best inorganic HTM. The device simulation shows that CuI has the best PCE of 22.69% when CBO and VBO is set to be +0.2 eV and 0 eV respectively at Nt of 1 ¡Á 1015 cm?3. The results indicate that Cu-based inorganic HTMs are efficient as well as stable HTMs and can be used towards commercializing the PSCs.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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CuFeS2 colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

Cubic CuFeS2 nanocrystals (NCs) have been obtained via a facile colloidal chemistry approach and they show remarkable catalytic activity in the reduction of I3-. Dye sensitized solar cells (DSSCs) with CuFeS2 NCs as counter electrodes (CEs) display a power conversion efficiency of 8.10% comparable to that of a cell with Pt as the CE (7.74%) under the same conditions.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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Charge Photogeneration and Recombination in Mesostructured CuSCN-Nanowire/PC70BM Solar Cells

Fullerene-based materials are widely used as electron acceptors in organic bulk-heterojunction solar cells; yet, they have rarely been used as the only photoactive component due to their low absorbance and limited charge generation efficiency. However, blending the wide-bandgap p-type material copper (I) thiocyanate (CuSCN) with [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM) leads to the formation of a unique mesostructured p-n like heterointerface between CuSCN and PC70BM and solar cells with a power conversion efficiency (PCE) of up to 5.4%. Here, we examine in detail the reasons for the surprisingly good device performance and elucidate the charge photogeneration and recombination mechanisms in CuSCN-based devices with PC70BM as the exclusive light-absorbing material. Our studies clearly demonstrate that a substantial fraction of the photocurrent in the CuSCN-based devices results from improved dissociation of fullerene excitons and efficient charge transfer at the CuSCN:PC70BM interface combined with reduced geminate and nongeminate charge recombination losses. Our results have implications beyond the fullerene-based devices studied here, as they demonstrate that careful selection of a mesostructured p-type transparent semiconductor paves the path to a new type of efficient single photoactive material solar cells.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”