In the present survey, a nitrogen-doped amorphous carbon nanocomposite has been prepared simply and eco-friendly from heating an acidic solution of sorbitol and urea. It was used as an efficient sorbent in dispersive solid phase extraction for the extraction of some pesticides (chlorpyrifos, diniconazole, clodinafop–propargyl, oxadiazon, fenpropathrin and penconazole) from fruit juice samples. The

Searching for new active molecules against M. Bovis BCG and Mycobacterium tuberculosis (MTB) H37Ra, a focused of 1,2,3-triazoles-incorporated 2,4 thiazolidinedione conjugates have been efficiently prepared via a click chemistry approach cyclocondensation of 4-amino-N-(5-methylisoxazol-3-yl)benzenesulfonamide (4), aryl aldehyde (5a–l), and mercapto acetic acid (6) with good to promising yields. The

In this research, a novel method was adopted for the extraction and determination of polyphenolic acids, i.e., chlorogenic acid, gallic acid, syringic acid and caffeic acid from different parts of Nepeta cataria L. samples. Extraction of polyphenolic acids from methanol extract was performed by ultrasound-assisted vesicles-based microextraction. In this procedure for the first time, 5-methyl salicylic

Two new proton transfer compounds, (H2a3mp)+(psba)− (1) and (H2a3mp)+(2MeO5sba)− (2), obtained from 2-amino-3-methylpyridine with (2a3mp) and p-sulfamoylbenzoic acid (Hpsba) or 2-methoxy-5-sulfamoylbenzoic acid (H2MeO5sba), respectively, and Cu(II) complexes of Hpsba (3), of H2MeO5sba (4), of 1 (5) and of 2 (6) were synthesized and characterized by FT-IR, UV, 1H-NMR, elemental, AAS, magnetic measurement

Optimization of the photodegradation of direct red 16 (DR16) under visible light irradiation in the presence of new photocatalyst [n-C4H9)4 N]3PMo2W9(Sn4+.xH2O)O39/TiO2 (PMoWSn/TiO2) was investigated. PMoWSn/TiO2 with different ratios of PMoWSn to TiO2 (2, 11, and 20%) were synthesized by modified sol–gel hydrothermal method. Characterization of the prepared nanocatalysts was carried out by photoluminescence

Landfill leachate is the liquid formed by the decomposition of waste in the landfill and infiltration of water through that waste. It contains high concentrations of ammonia and organic contaminants (measured in terms of chemical oxygen demand, COD). Biochar, produced from woody residues separated from municipal waste, was used for the reduction of COD of the leachate. The produced biochar was characterized

Angiogenesis is an essential factor for cancer progression. Although more attention is paid in angiogenesis on its role in cancer biology, many other non-neoplastic diseases are also angiogenic-dependent. Recently, there is motivation to control cancer via inhibition of angiogenesis. Isatin-based scaffolds have been extensively used as anticancer agents in the recent years. Although some biological

Dispersive liquid–liquid microextraction, based on ionic liquids for pioglitazone extraction in drug samples using high-efficiency liquid chromatography, was successful. In the present study, three-phase solvent system of water–acetone-ionic liquid 1-ethyl-3-methylimidazolium hexafluorophosphate (as an extracting solvent) was used as a suitable system for pioglitazone extraction and the parameters

Magnetic molecularly imprinted polymers (MIPs) for urea were prepared using konjac glucomannan (KGM) as the substrate, methacrylic acid as the graft comonomer, ethylene glycol dimethacrylate as the cross-linker, urea as the template molecule, and Fe3O4 NPs as the magnetic ingredient. The resultant MIPs were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy,

The present work describes the synthesis of novel hybrid materials by grafting process of phenyl phosphinic acid on different metal oxide surfaces (V2O5, ZrO2 and SnO2), by using a reactive milling process. Therefore, the syntheses took place in the solid phase, avoiding the presence of solvents. The grafting of the metal oxide surface is performed by using phenyl phosphinic acid as the coupling agent

Ten metal complexes of Co2+, Ni2+, Cu2+, Zn2+ and Cd2+ were synthesized by two novel Schiff bases derived from condensation of m-pthalaldehyde with 4-amino benzoic acid and isonicotinic hydrazide. The as-synthesized metal complexes were characterized and explored by different spectroscopic techniques. FT-IR spectra have confirmed the presence of C=N bands as well as UV–Vis spectroscopy in both Schiff

Galactose oxidase (E.C. 1.1.3.9) is an extracellular oxidoreductase enzyme containing Cu(I) which is produced by some fungi like Fusarium species. The enzyme catalyzes the selective oxidation of primary alcohols like galactose. In this study, a heterogeneous enzymatic system for click reaction was prepared. The most important advantage of the heterogeneous catalyst is the ease of separation and their

We report expedient methods to analyze the inactive and active ingredients and other impurities in Fulvestrant injection, using gas chromatography and high-performance liquid chromatography. The levels (LOQ to 150%) of Fulvestrant and related impurities were quantified using HPLC. A gradient temperature program was employed to reduce the analysis time and improve the peaks' resolution in the present

A simple new method based on cloud point extraction was optimized and validated to determine spirotetramat in agricultural surface water samples using HPLC–UV. In this method, the nonionic surfactant Triton X-114 was selected as a green extraction solvent because of its structure and properties. The effects of various parameters such as concentration and volume of Triton X-114, pH, temperature, and

Schiff base of dehydroacetic acid ligand (HL) and its transition metal complexes were prepared. The complexes were described by elemental analyses, molar conductivities, magnetic moments and spectral analyses. From the IR spectra, the ligand (HL) behaves as monobasic di- or tridentate ligand coordinated to the metal ions via azomethine N and O. UV spectra and magnetic moment show that the Cu(II), Co(II)

In this work, multi-walled carbon nanotubes were applied as sorbent for extraction, followed by back-extraction and HPLC/UV determination of Nalidixic acid in aqueous solutions. The effects of some parameters such as pH, flow velocity, sorbent amount, and ionic strength were investigated. A little amount of sorbent (5.0 mg) was chosen as its optimum amount which this sorbent was reusable for almost

The crystal structure of 1-(4-methylphenyl)-3-(2-(trifluoromethyl)phenyl)triaz-1-ene 1-oxide (L) is monoclinic and has a space group of P21/c with a = 8.066(2) Å, b = 16.740(5) Å, c = 11.730(4) Å, β = 117.76(3)° and Z = 4. In this study, direct procedures were used to solve the crystalline structure of this complex and refine it by full-matrix least-squares to ultimate values of R1 = 0.0610 and wR2 = 0

The current study described a novel covered platinum wire ion-selective electrode sensor that depends on Schiff base N-salicylidene-o-aminophenol that is synthesized as an ionophore for rapid and easy monitoring of Mn(II) in different real samples. Within the concentration range from 1.0 × 10−7 to 1.0 × 10−1 mol/L of Mn(II) ions, the trend of evaluation curve was straight in case of low concentration

Through applying the mixed-ligand method, a new coordination polymer (CP) of Cu(II) with the chemical formula of {Cu5(L)2(1,4-bimb)(μ3-OH)2(H2O)8]·2H2O}n (1, 1,4-bimb = 1,4-bis(imidazol-1-ylmethyl)benzene and H4L = 1,2,4,5-cyclohexanetetracarboxylic acid) was synthesized under the solvothermal conditions. Furthermore, the biological effect of compound against glomerulonephritis therapy was detected

In this study, Cd and Pb were determined and investigated in the most abundant boron minerals such as colemanite, tincal, ulexite and boron waste existed in Turkey using electrothermal atomic absorption spectrometer. Graphite furnace temperature program for Cd and Pb determinations in samples was optimized in the absence or presence of palladium (Pd) and nickel (Ni) + Pd matrix modifier mixture. Pd + Ni

In this study, a novel electrochemical biosensor is reported for carboxin detection based on the fabrication of the deoxyribonucleic acid/poly l-methionine-silver nanoparticles/pencil graphite electrode (DNA/PMT-AgNPs/PGE). The electrochemical response of carboxin on the DNA/PMT-AgNPs/PGE was measured using adsorptive differential pulse voltammetry (AdDPV). The electrochemical impedance spectroscopy

The present study is focused on the synthesis of hexadecyltrimethyl ammonium encapsulated silicovanadate [C19H39N](HSiV10O28) by sol–gel and hydrothermal method. The compounds have been characterized using Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Scanning electron microscope (SEM), thermogravimetry–differential scanning calorimetry (TGA/DSC), and UV–visible spectroscopy

Six new Zn(II) carboxylates derived from 2-(3-chlorophenyl) acetic acid, 2-(2-chlorophenyl) acetic acid and 2-(2-methoxy phenyl) acetic acid were synthesized and characterized by FTIR, multinuclear NMR (1H and 13C NMR) and single-crystal XRD. The geometry around the Zn atom in complexes 1 and 2 is distorted tetrahedral and distorted trigonal bipyramidal, respectively. The compounds were assessed for

In this work, we report a novel nonenzymatic glucose detection base on the use of Au (111)-like/SiO2 indium tin oxide (ITO) electrode. First, the ordered SiO2-cavity array was fabricated on the ITO electrodes via the ordered polystyrene spheres (PS) templates. Secondly, the nucleation stage of Au NPs was generated by an electrochemical seeding growth method. As a matter of fact, \( AuCl_{4}^{ - } \)

An effective LC–MS/MS method was developed for the quantification of traces of 4-phenoxyphenyl-boronic acid, a potential genotoxic impurity, in ibrutinib drug. AtlantisT3 Column of dimensions: 150 × 4.6 mm (length x diameter) and particle size: 5.0 μm was used. Gradient elution using ammonium formate buffer (10 mM) and acetonitrile as mobile phase A and B, respectively, was employed. Mass detection

Two new Hg(II), {[Hg(phend)2Cl2].(0.5 phend) (1) and [Hg(phend)2Br2].(0.5 phend) (2)} and a new Cd(II) {[CdI2(phend)2] (3)} complexes, containing phenanthridine (phend) ligand, have been synthesized from the reaction of HgCl2 (1), HgBr2(2), and CdI2 (3) with phend, respectively. The complexes were thoroughly characterized by elemental analysis, FT-IR, UV, NMR, and emission spectroscopies. Moreover

In an effort to discover new imidazolyl nucleus belonging to the family of N-fused heterocyclic compounds which display broad spectrum of biological applications, a series of novel imidazolyl pyrazolopyridines 3a,b–7a,b and imidazolyl pyrazoloquinoxaline 8a–d were synthesized. The structures of all the synthesized compounds were confirmed using spectroscopic data and elemental analyses. The compounds

A series of phosphonic acid and bisphosphoramidate derivatives were synthesized and characterized. The bioactivities against the fungal pathogen Macrophomina phaseolina and human acetylcholinesterase AChE enzyme were studied using QSAR based on multiple linear regression. L17, with (p-Cl–C6H4–NH) (p-Cl–C6H4)C(H)P(O)(OC2H5)2 skeleton, demonstrated a great mortality on the M. phaseolina mycelial growth

In this work, a series of triphenylamine (TPA)- based dye molecules (A1–A5) for dye-sensitized solar cells (DSSCs) application has been designed and screened. The electron donor contains TPA, thieno[3,2-b]thiophene, as the π-bridge, cyanoacrylic acid as electron acceptor based on donor–π-spacer–acceptor (D-π-A) as reference dye (3a). In order to enhance the tuning, effect of acceptor moieties was investigated

In this study, magnetic-dispersive solid-phase extraction coupled with ion pair-dispersive liquid–liquid micro-extraction (MSPE-i-DLLME) was used to the pre-concentration and extraction of five sulfonamides residues (sulfadiazine, sulfathiazole, sulfacetamide, sulfamethazine and sulfamethoxazole) in animal foodstuffs. The sulfonamides are extracted using magnetic carbon nanocomposite and then eluted

Addition of ionic liquids (ILs) into the fluids containing nanoparticles is often used to minimize particle aggregation and improve dispersion behavior of nanofluids. However, they also affect the physical characteristics of liquids, such as thermophysical properties and viscosity. The aim of this work was to investigate the role of 1-butyl 3-methylimidazolium bromide [C4mim][Br] and 1-butyl 3-methylimidazolium

In this study, two different single non-linear [feedforward neural network (FFNN) and support vector machine (SVM)] models with a traditional linear regression model [multi-linear regression (MLR)] were employed to predict the qualitative behaviour of thymoquinone (TQ) in HPLC method development interms of retention properties. The simulation involves the use of the concentration of the standard, the

Electrooxidation of selected phenylethers was investigated (2-phenoxyethanol, anisole, o-nitrophenyl octyl ether, diphenylether, fenoxycarb) on platinum and glassy carbon electrodes. The chosen solvents were acetonitrile, dimethyl sulphoxide, 1-propanol and mesityl oxide. In acetonitrile, at around 2 V characteristic voltammetric peaks appeared for all compounds. In dimethyl sulphoxide and 1-propanol

In this study, a new magnetic nanogel was synthesized for the extraction/pre-concentration of doxorubicin (DOX) from biological samples. The synthesized nano-sorbent was used for the pre-concentration and extraction of DOX prior to spectrophotometry determination. The influence of the main variables, including pH, sorption time, adsorbent amount, and NaCl content, was investigated and optimized by

This review article is based on the scientific investigations of Prof. Mehdi Rashidi during his working years in Shiraz University, Chemistry Department, Organometallic Chemistry Laboratory. Herein, we tried to overlook 40 years of his researches and intend to briefly point out all his publications during his research years. Prof. Rashidi’s researches were mostly focused on the synthesis and characterization

In this work, a simple supported liquid membrane transport strategy is applied to remove of the dichlorophenoxyacetic acid (2,4-D) from water samples as important agricultural pesticides. Here, the electrospun polyacrylonitrile (PAN) nanofiber-based sheet has been used in the SLM process as new support. The optimal SLM transport working parameters were found to be pH = 1 and NaCl solution of 2 M for

Abstract Under hydrothermal conditions, a novel bimetallic thulium–mercury compound {[Tm(H2O)2(IA)3]2n[(Hg6Br13)n]}(nHgBr2)·4nH2O·nH3O (1) (IA = isonicotinato anion) was prepared and the crystal structure was characterized by single-crystal and powder X-ray diffraction. It is characterized by a three-dimensional (3D) framework with a novel two-dimensional (2D) inorganic [(Hg6Br13)n] layer. Solid-state

The dielectric investigation has a great importance in liquid crystal studies as a supportive method to DSC for a complete characterization of liquid crystals as well as in the electronic applications. In this study, the synthesis, mesomorphic characterization and dielectric properties of a new phenylbenzoate-based three-ring calamitic liquid crystal which composed of ester linking groups, (S)-3,7-dimethyloctyloxy

Sensitive materials in gas sensors sometimes need to be activated at a certain high temperature. High working temperature, however, is one of the main obstacles of fabricating gas sensor. In this paper, a hydrogen sulfide gas sensor based on cataluminescence at lower temperature than 150 °C was reported. The sensitive material, Pd-doped Fe2O3–Zr4MnO10, was synthesized via precipitation and impregnation

Tetracycline is one of the most commonly used antibiotics in a wide range of antibacterial drugs. Self-association of drugs (e.g. antibiotics) causes problems, such as increasing toxicity and reducing penetration of drugs through cell membranes. In this study, the self-association process of tetracycline was investigated experimentally and theoretically in aqueous, ethanol, and salt solutions. Spectroscopy

The present research reported the synthesis and electrochemical activities of CuO/GO nanocomposites modified screen-printed graphite electrode (CuO/GO/SPGE) as one of the highly sensitive electrochemical sensors to determine Sudan I. Therefore, we utilized cyclic voltammetry, chronoamperometry, and differential pulse voltammetry (DPV) to examine electrochemical behavior of Sudan I at CuO/GO/SPGE. This

The α-Fe2O3/TiO2 nanostructure material, synthesized on FTO (fluorine-doped tin oxide) substrate using the hydrothermal method at 180 °C for 5 h, exhibits an enhanced performance in the photocatalytic degradation of an organic dye. The optical band gap was found to decrease compared to the TiO2 one. The photocatalytic performances of the as-prepared heterojunction were evaluated with the degradation

A promising chemotherapeutic agent is spirooxindole. Probable targets involve cancers of the lung, liver, breast, colon, stomach, and prostate. Widespread drug discovery applications and biological activity are significant synthetic targets of spirooxindoles. In the present study, the synthesis of CaFe2O4 nanoparticles via the sol–gel method is discussed. Vibrating sample magnetometer, scanning electron

Abstract An efficient and facile synthesis of substituted novel benzimidazoles (3a–3h) mediated by fruit juices viz. Cocos nucifera L. juice, Citrus limetta juice and Citrus sinensis L. juice, via condensation of substituted aldehydes (1a–1h) and o-phenylenediammine (2a) under solvent-free condition at room temperature is presented in this paper. The purity of compounds was confirmed by melting point

A thermal reduction is a promising approach for the synthesis of graphene owing to its eco-friendly nature, cost-effective and mass production. However, the elucidation of the structural conformation in graphene oxide concerning for the reduction in temperature remains unclear. In this study, commercially available graphite (Gr) powder was first exploited in distilled water, which was chemically oxidized

MP2/aug-cc-pVDZ calculations were employed to interpret the molecular interactions of iminophosphorane (IP) and HSX (X = F, Cl and Br). The halogen bond (X···N), hydrogen bond (H···N, H···X, H···S) and S···N interactions were found for complex formation between IP and HSX molecules. Among the predicted models, the S···N and H···N interactions have been recognized as important types of these interactions

Hafnium metal is used in a wide range of industries such as microprocessor manufacturing, nuclear reactors and special alloys due to its physical, chemical and radiation properties. Emulsion liquid membrane (ELM) is an effective and efficient alternative for heavy metal separation compared to conventional methods due to high selectivity, energy-saving, high mass transfer and low operating capital.