1111-67-7Relevant articles and documents
Copper(I) thiocyanate-amine networks: Synthesis, structure, and luminescence behavior
Miller, Kayla M.,McCullough, Shannon M.,Lepekhina, Elena A.,Thibau, Isabelle J.,Pike, Robert D.,Li, Xiaobo,Killarney, James P.,Patterson, Howard H.
, p. 7239 - 7249 (2011)
A series of metal-organic networks of CuSCN were prepared by direct reactions with substituted pyridine and aliphatic amine ligands, L. Thiocyanate bridging is seen in all but 1 of 11 new X-ray structures. Structures are reported for (CuSCN)L sheets (L = 3-chloro- and 3-bromopyridine, N-methylmorpholine), ladders (L = 2-ethylpyridine, N-methylpiperidine), and chains (L = 2,4,6-collidine). X-ray structures of (CuSCN)L2 are chains (L = 4-ethyl- and 4-t-butylpyridine, piperidine, and morpholine). A unique N-thiocyanato monomer structure, (CuSCN)(3-ethylpyridine)3, is also reported. In most cases, amine ligands are thermally released at temperatures 100 °C. Strong yellow-to-green luminescence at ambient temperature is observed for the substituted pyridine complexes. High solid state quantum efficiencies are seen for many of the CuSCN-L complexes. Microsecond phosphorescence lifetimes seen for CuSCN-L are in direct contrast to the nanosecond-lifetime emission of CuSCN. MLCT associated with pyridine π* orbitals is proposed as the excitation mechanism.
A Dye-sensitized Photocatalyst (p-Type CuCNS) for the Generation of Oxygen from Aqueous Persulphate
Tennakone, Kirthi,Wickramanayake, Sunil,Gunasekara, Martin U.
, p. 2553 - 2558 (1987)
p-CuCNS coated with Rhodamine B and then photoplatinized is found to photogenerate oxygen from aqueous persulphate with the dye remaining photostable.The photochemical mechanisms involved are discussed.
Measurement of Antioxidant Capacity by Electron Spin Resonance Spectroscopy Based on Copper(II) Reduction
Li, Dan,Jiang, Jia,Han, Dandan,Yu, Xinyu,Wang, Kun,Zang, Shuang,Lu, Dayong,Yu, Aimin,Zhang, Ziwei
, p. 3885 - 3890 (2016)
A new method is proposed for measuring the antioxidant capacity by electron spin resonance spectroscopy based on the loss of electron spin resonance signal after Cu2+ is reduced to Cu+ with antioxidant. Cu+ was removed by precipitation in the presence of SCN-. The remaining Cu2+ was coordinated with diethyldithiocarbamate, extracted into n-butanol and determined by electron spin resonance spectrometry. Eight standards widely used in antioxidant capacity determination, including Trolox, ascorbic acid, ferulic acid, rutin, caffeic acid, quercetin, chlorogenic acid, and gallic acid were investigated. The standard curves for determining the eight standards were plotted, and results showed that the linear regression correlation coefficients were all high enough (r > 0.99). Trolox equivalent antioxidant capacity values for the antioxidant standards were calculated, and a good correlation (r > 0.94) between the values obtained by the present method and cupric reducing antioxidant capacity method was observed. The present method was applied to the analysis of real fruit samples and the evaluation of the antioxidant capacity of these fruits. (Graph Presented).
CuO/CuSCN valence state heterojunctions with visible light enhanced and ultraviolet light restrained photocatalytic activity
Wang, Gang,Huang, Baibiao,Wang, Lu,Wang, Zeyang,Lou, Zaizhu,Qin, Xiaoyan,Zhang, Xiaoyang,Dai, Ying
, p. 3814 - 3816 (2014)
CuSCN is applied, for the first time, in a photocatalytic system to form CuO/CuSCN valence state heterojunctions, which exhibited enhanced visible light driven photocatalytic activity and, surprisingly, ultraviolet light restrained activity. Proper migration of photo-generated carriers is proposed to explain the photocatalytic process. This journal is the Partner Organisations 2014.
Ferro- and antiferromagnetic interactions of layer-structured basic copper compounds as studied by solid-state high-resolution deuterium NMR
Morii, Kunio,Maruta, Goro,Takeda, Sadamu
, p. 1995 - 2001 (2003)
Magnetic local structure of a ferromagnetic layer-structured basic copper compound Cu2(OD)1.96(C4H6 (COO)2)1.020.07D2O with dicaboxylate anion was examined by solid-state high-resolution deuterium NMR above 200 K. The magnetic interaction in a copper layer was probed by the isotropic D NMR shift of OD- ions. Only one strong signal was observed for the OD- ions of Cu2(OD)1.96(C4H6 (COO)2)1.020.07D2O, while more than two signals corresponding to different magnetic chains of Cu2+ ions in a layer were observed for most of Cu2(OD)3X where X was univalent anion. A ferromagnetic exchange interaction J = +71 K within a copper layer was estimated from the temperature dependence of the isotropic D NMR shift by assuming an one-dimensional Heisenberg model. A layer-structured compound Cu2(OH)3(SCN) with non-oxygen atom coordination for bridging copper ions was synthesized by anion exchange reaction. The magnetic susceptibility measurement indicates that a weak ferromagnetic interaction dominates in the high temperature region and a weak antiferromagnetic interaction appears in the low temperature region.
Transitionmetal complexes with pyrazole-based ligands: Part 21. Thermal decomposition of copper and cobalt halide complexes with 3,5-dimethyl-1- thiocarboxamidepyrazole
Szécsényi, K. Mészáros,Leovac,Kovács,Pokol,Ja?imovi?
, p. 289 - 293 (2006)
The thermal decomposition of Cu2L2Cl4, Cu2L2Cl2, Cu2L2Br 2 and Co2L2Cl4 complexes (L=3,5-dimethyl-1-thiocarboxamidepyrazole) is described. The influence of the central ion to ligand mole ratio on the course of complex formation is examined in reaction of L with copper(II) chloride. In Cu(II):L mole ratio of 1:1, in methanolic solution the reaction yields to yellow-green Cu2L 2Cl4 crystals. In the filtrate a thermodynamically more stable orange Cu2L2Cl2 copper(I) complex is forming. With a Cu(II):L mole ratio of 1:2 only the latter compound is obtained. The composition and the structure of the compounds have been determined on the basis of customary methods. On the basis of FTIR spectrum of the intermediate which is forming during the thermal decomposition of Cu2L 2Cl2 a decomposition mechanism is proposed.
Facile synthesis of a hierarchical CuS/CuSCN nanocomposite with advanced energy storage properties
Kannangara, Yasun Y.,Prabunathan, Pichaimani,Song, Jang-Kun
, p. 15387 - 15396 (2018)
We introduce CuS/CuSCN nanocomposites as active materials in pseudocapacitors, in which the redox reactions of both CuS and CuSCN simultaneously contribute to energy storage. This nanocomposite is prepared using an in situ methodology via facile, low-energy-consuming green nanochemistry. The CuS/CuSCN nanocomposites offer a high capacitance compared to their individual constituents. CuS nanorods (～15 nm) are anchored on the surface of CuSCN nanosheets (～100 nm) and they interconnect the CuSCN nanosheets, producing mesoporous nanoclusters with a large surface area, thus improving the charge transfer efficiency. The CuS/CuSCN nanocomposites exhibit high electrical conductivity and strong redox reactivity, and in particular, the pseudocapacitor with a compositional ratio of 1:1 exhibits the highest charge transfer efficiency. Consequently, the 11 CuS/CuSCN active material exhibits a high energy density (approximately 63 W h kg-1) and a high power density (1.9 kW kg-1 at 9.0 W h kg-1) as a single electrode. The highest specific capacitance is measured to be 1787.3 F g-1 in the single electrode. Furthermore, an aqueous asymmetric hybrid supercapacitor based on the CuS/CuSCN 1:1//activated carbon (AC) shows an approximately four times increase in the power density (7.9 kW kg-1), compared to the single electrode.
Synthesis, spectral studies of cobalt(II) tetrathiocyanoto dicuperate(I) complexes with some acylhydrazones and their antimicrobial activity
Singh,Singh
, p. 374 - 381 (2008)
Cobalt(II) complexes of the type Co[Cu(NCS)2]2 ? L, where L is acetophenonebenzoylhydrazone (Abh), acetophenoneisonicotinoylhydrazone (Ainh), acetophenonesalicyloylhydrazone (Ash), acetophenoneanthraniloylhydrazone (Aah), p- hydroxyacetophenonebenzoylhydrazone (Phabh), p- hydroxyacetophenoneisonicotinoylhydrazone (Phainh), p- hydroxyacetophenonesalicyloylhydrazone (Phash), and p- hydroxyacetophenoneanthraniloylhydrazone (Phaah) were synthesized and characterized by elemental analyses, molar conductance, magnetic moments, electronic and IR spectra, and X-ray diffraction studies. The complexes are insoluble in common organic solvents and are non-electrolytes. These complexes are coordinated through the >C=O and >C=N groups of the hydrazone ligands. The magnetic moments and electronic spectra suggest a spin-free octahedral geometry around Co(II). The X-ray diffraction parameters (a, b, c) for Co[Cu(SCN)2]2 ? Ainh and Co[Cu(SCN)2] 2 ? Phabh correspond to orthorhombic and tetragonal crystal lattices, respectively. The complexes show a fair antifungal and antibacterial activity against a number of fungi and bacteria. The activity increases with increasing concentration of the compounds.
Growth mechanisms of CuSCN films electrodeposited on ITO in EDTA-chelated copper(II) and KSCN aqueous solution
Wu, Weibing,Jin, Zhengguo,Hua, Zhen,Fu, Yanan,Qiu, Jijun
, p. 2343 - 2349 (2005)
Electrodeposition of β-CuSCN films was investigated on transparent conducting ITO substrates in an aqueous electrolyte containing EDTA-chelated Cu(II) and KSCN. It has been observed that the instability of CuSO4 and KSCN aqueous solution without EDTA is due to the formation of Cu(SCN) 2 precipitation, which can transform into CuSCN and (SCN)x at room temperature. Research results illuminate that the deposited film at -0.5 V versus Ag/AgClsat at 298 K is uniform and dense and composed of nanocrystals. The film is p-type with stoichiometric excess of SCN and a direct transition gap of 3.7 eV. Deposition mechanisms of CuSCN films at varied temperatures are studied based on the proposed energetic model. At or below room temperature, the electron quantum tunnel through deposition layer is predominant at the very beginning. However, the growth is limited when the thickness of CuSCN film reaches the size comparable to the diffusion length of electrons. Above room temperature, the thermal activation of surface states plays an important role in the continuous growth of large crystals through holes transport in the valence band. The calculated activation energy for crystal growth is 0.5 eV.
Fabrication of upended taper-shaped cuprous thiocyanate arrays on a copper surface at room temperature
Xu, Jiasheng,Xue, Dongfeng
, p. 11232 - 11236 (2006)
A new strategy has been well designed to form upended taper-shaped cuprous thiocyanate (hereafter abbreviated as CuCNS) arrays on a copper substrate with use of a simple solution-phase method at room temperature. This method consists of a liquid-solid reaction between a solution of thiocyanate ammonium and the copper substrate itself in the assistance of formamide. Novel CuCNS arrays are approximately perpendicular to copper substrate surfaces. Every single crystal shows an upended taper-like morphology (i.e., the tip end points into the surface of copper substrate and the other big end of the taper exposes out, like a dart thrusting into the copper substrate). On the basis of structure and chemical bond analysis, CuCNS crystals tend to grow along the c-axis, which is essential for the formation of CuCNS arrays on a copper substrate. This approach also provides a facile strategy to produce different patterns on different copper substrates, which may be applicable to the synthesis of other inorganic materials with various potential applications.
