Chemical Papers
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Synthesis, characterization, and ethylene oligomerization of three novel dendritic nickel catalysts
Chemical Papers - Tập 71 - Trang 895-904 - 2017
Three dendritic nickel complexes C1–C3 were synthesized from three poly(amido amine) dendrimers, salicylic aldehyde and nickel chloride hexahydrate via Schiff base condensation reaction and coordination reaction. The structures of the dendritic ligands and nickel complexes were characterized by FT-IR, UV, 1H NMR, ESI–MS, and elemental analysis. When activated with aluminum co-catalysts, three comp......
Mass transfer examination in electrodialysis using limiting current measurements
Chemical Papers - Tập 69 - Trang 553-559 - 2017
The impact of electrodialysis module characteristics on mass transfer was examined using the limiting current method. The current-voltage curves of different electrodialysis modules were measured and limiting currents were determined using the derivative method. The mass transfer coefficients were calculated and the parameters of their dependence on linear flow velocity were estimated. From these ......
Multigram-scale synthesis of GSK 2,256,294, an inhibitor of soluble epoxide hydrolase in clinical evaluation
Chemical Papers - - 2022
Alternative two-step route to khellactone analogues using silica tungstic acid and sodium hydrogen phosphate
Chemical Papers - Tập 67 - Trang 1474-1478 - 2013
A series of coumarins was synthesised via the silica tungstic acid-catalysed Pechmann reaction; some of these were employed for known three-component reactions with aromatic aldehydes and malononitrile in the presence of sodium hydrogen phosphate (Na2HPO4) as a basic catalyst, affording a variety of potentially anti-HIV active khellactone analogues.
Thermally stable oligomer—Metal complexes based on oligo-ortho-aminophenol and oligophenylazomethinephenol
Chemical Papers - Tập 60 - Trang 306-310 - 2006
The oligo-ortho-aminophenol was synthesized by the oxidative polycondensation of ortho-aminophenol with air oxygen. The oligophenylazomethinephenol was synthesized by the condensation of aniline with oligosalicylaldehyde. Metal complexes of these oligomers with Cu(II), Co(II), Zn(II), and Ni(II) were synthesized and characterized. Based on the results of thermogravimetric analysis, synthesized oli......
Low-cost composite electrode consisting of graphite, colloidal graphite and montmorillonite with enhanced electrochemical performance for general electroanalytical techniques and device fabrication
Chemical Papers - Tập 78 - Trang 633-643 - 2023
Further advancement of the graphite–clay composite electrodes is an essential necessity, which improves performance, resulting in a better alternative for commercial electrodes. In this respect, a novel composite electrode is fabricated using graphite, colloidal graphite and montmorillonite clay (GCGMMTCE), exhibiting ideal electrode behavior, which results in an improved electrochemical performan......
Aluminium powder as a reactive template for preparation of carbon flakes from CCl4
Chemical Papers - Tập 74 - Trang 4599-4607 - 2020
This work presents a simple procedure for the preparation of 2D carbon flakes by a catalyst-free redox reaction in the range of 400–600 °C at atmospheric pressure. Tetrachloromethane (CCl4) was reduced by aluminium flakes (Al), which also serve as a template for carbon flakes, for either 60 min or 120 min. Gaseous aluminium chloride (AlCl3) was released from the synthesis. According to BET analysi......
Investigating the chemical and physical aspects: optical and electrical properties of TiO2, TiO2: Fe, and Fe/ TiO2 (111) through DFT analysis
Chemical Papers - - 2023
The development of a thin film titanium dioxide (TiO2) depends on an understanding of complex electronic structure and charge transport properties. The utilization of simulation studies will help us understand the complicated system at the atomic level. Here, utilizing Hubbard's modified first-principles density functional theory (DFT + U), a theoretically created thin film TiO2 (111) interface mo......
Metabolomic approach to Alzheimer’s disease diagnosis based on mass spectrometry
Chemical Papers - Tập 66 - Trang 829-835 - 2012
Alzheimer’s disease is the most common neurodegenerative disease, but there is still no cure and early diagnosis remains very difficult. For this reason, the discovery of new biomarkers is of great importance. The application of metabolomics is emerging in this field, based on the use of mass spectrometry as a technique of analysis. In this work, blood serum samples (from Alzheimer’s disease patie......
Zirconium(IV) 4-sulphophenylethyliminobismethylphosphonate as an efficient and reusable catalyst for one-pot synthesis of 3,4-dihydropyrimidones under solvent-free conditions
Chemical Papers - Tập 65 - Trang 829-834 - 2011
Zirconium(IV) 4-sulphophenylethyliminobismethylphosphonate (ZSBEDP) was prepared and characterised by elemental analysis, IR, TG-DSC, and XRD. ZSBEDP was found to be an efficient catalyst for the Biginelli reaction of aromatic aldehyde, ethyl acetoacetate, and urea or thiourea under solvent-free conditions so as to give 3,4-dihydropyrimidones in good to excellent yields. The catalyst can be separa......
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