Category: 1111-67-7

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Inorganic Hole-Transporting Materials for Perovskite Solar Cells

In the last few years, inorganic?organic metal halide perovskite solar cells (PSCs) have attracted a great deal of attention as a promising next-generation solar-cell technology because of their high efficiencies and low production cost. Hole-transporting materials (HTMs) play an essential role in effective charge extraction and thus in achieving high overall efficiency. Therefore, searching for an efficient, stable, and low-cost HTM in PSCs has been one of the hottest research topics in this field. Inorganic p-type semiconductors that possess several appealing characteristics, such as suitable energy levels, high hole mobility, and high chemical stability, as well as low production cost, etc., are promising HTM candidate materials in PSCs. Here, specific attention is paid to the recent progress in inorganic HTMs being explored for PSCs. A variety of methods developed for the fabrication of these inorganic HTMs are summarized in detail, together with their corresponding performance in PSCs. Finally, an outlook on further enhancements of highly efficient PSCs based on inorganic HTMs is presented.

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

 

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. Cuprous thiocyanate,introducing its new discovery. category: copper-catalyst

Syntheses and crystal structure of three novel supramolecular halides/pseudohalides {(DMB)[Cu 2(SCN) 4]}n,{(DMB)[Cu(SCN) 4]}, and {(DMB)[Ag 2(SCN) 4]} n directed by dicationic template possessing C2-symmetry

Three novel hybrid complexes, namely{(DMB)[Cu2(SCN)4]}n (1), {(DMB)[Cu(SCN)4]} (2), and {(DMB)[Ag2(SCN)4]}n (3), have been synthesized via the self-assembly in DMF-methanol system based on multidentate ligand DMB, {DMB = alpha, alpha?- di(3-methylimidozole-1-yl)benzene dichloride}. Single-crystal X-ray diffraction analysis shows 1 and 3 are 1D supramolecules, whereas 2 is mononuclear. Electrostatic interactions between the organic counteranions and inorganic moieties are present and do the contribution to the crystal packing. These compounds have been further characterized by IR spectroscopy and thermostability properties.

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

 

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Perovskites photovoltaic solar cells: An overview of current status

Perovskite based solar cells have recently emerged as one of the possible solutions in the photovoltaic industry for availing cheap solution processable solar cells. Hybrid perovskites display special combination of low bulk-trap densities, ambipolar charge transport properties, good broadband absorption properties and long charge carrier diffusion lengths, which make them suitable for photovoltaic applications. The year 2015 witnessed an upsurge in the published research articles on perovskite solar cells (PSC) which is indicative of the potential of this material. Since the introduction of PSC the power conversion efficiency has reached above 22% in a relatively short period of time. However, the poor reproducibility in device fabrication and lack of uniformity of the PSCs performances is a major challenge in obtaining highly efficient large scale PSC devices. The aim of this paper is to present a brief review on the current status of perovskites based solar cell due to the use of different device architectures, fabrication techniques as well as on the use of various electron and hole interfacial layers (HTMs and ETMs). The review also discusses the basic mechanisms for device operation which provides better understanding on the properties of the various layers of device structures.

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

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1111-67-7, name is Cuprous thiocyanate, introducing its new discovery. Quality Control of Cuprous thiocyanate

Dye-sensitized near-infrared room-temperature photovoltaic photon detectors

Dye molecules bonded to a semiconductor surface could inject carriers to a band on photoexcitation. This process known as dye-sensitization is used for extending the sensitivity of silver halide emulsions. More recently, dye-sensitization has been adopted to devise solar cells. A near-infrared (NIR) sensitive heterojunction n-TiO2/D/p-CuSCN (where D denotes a NIR absorbing dye) is developed to examine the possibility of using dye-sensitization for IR detection. Although the responsivity is lower and response slow compared to silicon detectors, dye-sensitized detectors would be cost effective, especially for large area devices. They are operable at room temperature and have the advantage of insensitivity to noise induced by band-gap excitations (providing high specific detectivity of ?10 11). Furthermore, the spectral response can be adjusted by choosing the appropriate dye.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Quality Control of Cuprous thiocyanate. In my other articles, you can also check out more blogs about 1111-67-7

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

 

Reference 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 Review，once mentioned of 1111-67-7

SGLT inhibitors as antidiabetic agents: A comprehensive review

Diabetes is one of the most common disorders that substantially contributes to an increase in global health burden. As a metabolic disorder, diabetes is associated with various medical conditions and diseases such as obesity, hypertension, cardiovascular diseases, and atherosclerosis. In this review, we cover the scientific studies on sodium/glucose cotransporter (SGLT) inhibitors published during the last decade. Our focus on providing an exhaustive overview of SGLT inhibitors enabled us to present their chemical classification for the first time.

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

 

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A Study of Copper Compounds by X-Ray Absorption Spectroscopy

Chemical shifts, DeltaE, of the K-absorption discontinuity in several compounds of copper possessing formal oxidation states between 0 and III have been measured.The shifts show a parabolic dependence on the formal oxidation state as well as on the effective atomic charge, q, on copper.Anomalous chemical shifts shown by some of the compounds are discussed in terms of the bonding in these compounds.The DeltaE values have also been correlated with the core electron binding energies obtained from X-ray photoelectron spectroscopy.

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

 

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. Cuprous thiocyanate,introducing its new discovery. Application In Synthesis of Cuprous thiocyanate

Copper(I) pseudohalide coordination polymers containing macrocyclic methylcycloarsoxane (CH3AsO)n (n = 4, 5) or 1,7-dithia-18-crown-6 bridging units

Treatment of an acetonitrile solution of CuCN with methylcycloarsoxane (CH3AsO)n at 110C affords the coordination polymer ?3[CuCN{cyclo-(CH3AsO)4}] (1), in which infinite CuCN zigzag chains are linked by mu-As1,As 3 cyclotetramers (CH3AsO)4 into an open 3-D framework. Under similar solvothermal conditions, reaction of CuSCN with (CH3AsO)n in the presence of KSCN leads to metal-mediated ring expansion of the cycloarsoxane to yield the complex ? 1[{K[cyclo-(CH3AsO)5]2}Cu(NCS) 2] (2). This contains discrete [Cu(NCS-kappaN)2{cyclo- (CH3AsO)5kappaAs}2]- anions that bridge kappa10O coordinated potassium cations into infinite chains. In contrast, the structure directing role of the [K(1,7DT18C6) 2]+ sandwich building units for the solvothermal product ?3[{K(1,7DT18C6)2}Cu6(CN) 7] (3) (1,7DT18C6 = 1,7-dithia-18-crown-6) leads to formation of an open ?3[{Cu6(CN)7} -] framework. Individual [K(1,7DT18C6)2]+ moieties bridge Cu Atoms in a mu-S1,S7 mode and are encapsulated within the large [Cu26(CN)28]2- cages of the cyanocuprate(I) network.

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

 

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. Cuprous thiocyanate,introducing its new discovery. Application In Synthesis of Cuprous thiocyanate

Aryl Sulfonium Salts for Site-Selective Late-Stage Trifluoromethylation

Incorporation of the CF3 group into arenes has found increasing importance in drug discovery. Herein, we report the first photoredox-catalyzed cross-coupling of aryl thianthrenium salts with a copper-based trifluoromethyl reagent, which enables a site-selective late-stage trifluoromethylation of arenes. The reaction proceeds with broad functional group tolerance, even for complex small molecules on gram scale. The method was further extended to produce pentafluoroethylated derivatives.

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

 

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

Construction of two unique W/S/Cu cluster-based coordination polymers affected by pseudohalogen ligands

The pseudohalogen ligands affecting the architectures of heterothiometallic Mo(W)/S/Cu(Ag) cluster-based coordination polymers (CPs) was firstly explored. In the presence of CuCN or CuSCN with distinct pseudohalogen ligands, two unique W/S/Cu cluster-based CPs [WS4Cu3(CN)(4,4?-bipy)2]n (1, 4,4?-bipy = 4,4?-bipyridine) and {[WS4Cu4(4,4?-bipy)4][WS4Cu4(SCN)4(4,4?-bipy)2]·0.5DMSO}n (2) were achieved by interdiffusion reaction of (NH4)2WS4 and 4,4?-bipy. 1 and 2 were characterized by X-ray single and powder crystal diffractions, elemental analysis, IR, UV-Vis, thermogravimetric analysis. 1 exhibits a neutral 2-D (4,4) network, fabricated by 4-connected T-shaped [WS4Cu3]+ clusters, single CN- bridges and double 4,4?-bipy bridges. While, 2 possesses an unusual 3-D fourfold non-equivalent interpenetrated architecture, consisting of two cationic and two anionic planar ‘open’ [WS4Cu4]2+ cluster-based frameworks; the cationic and anionic architectures are constructed by double 4,4?-bipy bridges and single 4,4?-bipy bridges, respectively, and all show the diamondoid topologies.

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

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1111-67-7, name is Cuprous thiocyanate, introducing its new discovery. COA of Formula: CCuNS

Copper-Mediated Introduction of the CF2PO(OEt)2 Motif: Scope and Limitations

Herein, a general procedure to access CF2PO(OEt)2-containing molecules is reported. The reagent CuCF2PO(OEt)2 is accessible by a simple protocol and a broad range of substrates can be functionalised. The procedure allows the conversion of aryl diazonium salts, as well as aryl, heteroaryl, vinyl and alkynyl iodonium salts, into the corresponding fluorinated molecules at room temperature. Mechanistic studies were performed to gain a better understanding of the reaction pathway. Under similar conditions, vinyl and aryl iodides, allyl halides, and benzyl bromides were also functionalised, and the scope and limitations of the reaction were studied. Finally, the procedure was extended to disulfides to offer new access to SCF2PO(OEt)2-containing molecules.

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