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The fresnel lens as a solar collector for various thermal energy applications
Published in Alka Mahajan, B.A. Modi, Parul Patel, Technology Drivers: Engine for Growth, 2018
Jay Ranparia, Rajubhai Kanaiyalal Mewada
In this experiment a plate of copper was oxidized using atmospheric oxygen to produce copper oxide, which is black in color, at around 300°C to 800°C. The copper oxide which was formed during the reaction was tested by adding HCl, as copper oxide reacts with HCl to form copper chloride which is green in color. () 2Cu+O2---------------→2CuOCopperCopper(II)oxide () CuO+2HCl---------------→CuCl2+H2OCopper(II)oxideCopper(II)chloride
Cu(II) complexes of hydrazones–NSAID conjugates: synthesis, characterization and anticancer activity
Published in Journal of Coordination Chemistry, 2020
Jatinder Kaur, Tanmayee Chikate, Parbati Bandyopadhyay, Soumya Basu, Rajeev Chikate
A.R. grade chemicals were used as received. Hydrazine hydrate, pyridine-2-aldehyde, imidazole-2-carboxaldehyde and copper(II) chloride were procured from Aldrich. Sodium salt of diclofenac and ibuprofen hydrochloride were a generous gift from a pharmaceutical company and used only for academic purpose. Tetraethylammonium perchlorate (TEAP) used for electrochemistry was prepared as reported. Triple negative breast adenocarcinoma (MDA MB-231), adenocarcinomic human alveolar basal epithelial (A-549) and colorectal carcinoma (HCT-116) cell lines were procured from the National Centre for Cell Science (NCCS), Pune, India. Reagents like L-glutamine (200 mM), antibiotic and antimyotic reagents (100X), trypsin (0.25%), EDTA (0.02%), phosphate buffered saline (PBS), fetal bovine serum (FBS), Dulbecco's modified Eagle medium (DMEM), MCoy-5A medium, F-12K media and MTT (3-[4,5-dimethyl-2-thiazole]-2,5-diphenyl-2H-tetrazolium) were purchased from Hi-Media. Triton X-100, isopropanol and HCl were obtained from Qualigens. HPLC grade (Aldrich) deuterated solvents CDCl3 (99.9%), D2O (99.9%) and DMSO-d6 (99.5%) were employed for spectroscopic analysis. Other solvents like methanol, acetonitrile, diethylether, dimethylsulfoxide (DMSO) and dimethylformamide (DMF) were purified and dried before use as per established protocol. Triply distilled water was used for the biochemical studies.
Copper(II) halide complexes of aminopyridines: Syntheses, structures and magnetic properties of [(5CAP)2CuX2] and [(5BAP)nCuX2] (X = Cl, Br)
Published in Journal of Coordination Chemistry, 2018
Penelope C. Farris, Alexander D. Wall, Jonathan E. Chellali, Carina L. Chittim, Christopher P. Landee, Mark M. Turnbull, Jan L. Wikaira
The reaction of 5BAP with CuCl2 produced the 2:1 complex [(5BAP)2CuCl2], 3, as the only isolable complex. However, during the course of the reaction, a variety of colored species were observed (light green to golden brown to dark green to purple) suggesting that multiple intermediates are formed, likely including a 1:1 hydrate complex similar to 1, and a 2:1 complex similar to 2a (some of these are seen in Figure S3). Unlike the reaction with CuBr2, the reaction with copper(II) chloride could not be stopped at the various phases. IR and powder X-ray analysis show mixtures of phases until the reaction finally goes to completion and produces 3. The reaction rate appears to be dependent on adventitious moisture. The use of copper(II) chloride dihydrate gives a moderately rapid reaction (hours) while grinding, while the use of anhydrous copper(II) chloride results in much slower conversion (a day or more). The reaction also proceeds much more quickly if the materials are ground in a humid atmosphere. Surprisingly, perhaps, after initial grinding (during which the waters of hydration are removed from the copper(II) chloride dihydrate according to IR), no water is observed in the IR spectra throughout the remainder of the reaction. Finally, once the reaction is initiated, additional grinding is not required. If the starting materials are finely ground separately and then mixed via light grinding, a light green solid is produced. After this, the reaction will proceed spontaneously as observed by the progression of colors, finally ending in the production of dark purple 3 (Figure S3).
Preparation and characterization of a macroporous agarose monolith as a stationary phase in IMAC chromatography
Published in Chemical Engineering Communications, 2019
Montaña Elviro, Milena Vega, Eva-María Martín del Valle, Miguel Ángel Galán
Agarose D5 was supplied by Laboratorios Conda. Tween 80, sodium chloride, sodium phosphate monobasic and phosphate buffered saline (PBS) pH 7.4, Sodium borohydride, 1,4-butanediol diglycidyl ether, imidazole, iminodiacetic acid (IDA), Trizma Base, sodium phosphate dibasic anhydrous, Blue Dextran molecular weight 2.000.000, Bradford reagent and BSA lyophilized were supplied by Sigma Aldrich. Cyclohexane, monobasic potassium phosphate and Sodic azide were provided by Panreac. Sodium hydroxide, sodium carbonate and potassium chloride were purchased by Scharlau. Ethanol and acetone were supplied by GPR Rectapur. Copper (II) chloride was provided by Riedel-de Haën.