Copper nanoparticles supported on 2-methoxy-1-phenylethanone-functionalized MCM-41: an efficient and recyclable catalyst for one-pot three-component C–S coupling reaction of aryl halides with benzyl bromide and thiourea.

A nickel(II) Schiff base complex supported on nano-TiO₂ was designed and synthesized as an effective heterogeneous nanocatalyst for selective oxidation of sulfides to sulfoxides.

Chemical characterization of silver nanoparticles using Falcaria vulgaris.

1) Design and synthesis of ferrocenyl based valproic acid ester derivatives.

2) Investigation of electrochemical, and photochemical properties of these compounds.

3) Determination of HOMO and LUMO energies using cyclc voltammetry.

Remedial effects of titanium nanoparticles using Ziziphora clinopodioides Lam.

Three newly designed Containing-PMBP N₂O₂-donors complexes, [Co(L¹)(CH₃OH)₂] (1), [{Zn(L²)(CH₃OH)(H₂O)}₃] (2) and [Cu₄(L²)₄]⋅2CHCl₃ (3), have been synthesized and structurally characterized. Most importantly, Hirshfeld surface analyses of complexes 1, 2 and 3 were conducted and fluorescence properties were investigated.

Green synthesis of gold nanoparticles by Gundelia tournefortii L.

Green synthesis of silver nanoparticles by Stachys lavandulifolia.

In this investigation, the usage of ClCH₂CCCH₂Cl alkyne as a reagent for the oxidative addition reaction with organoplatinum‌(II) complex [PtMe₂(bipy)] was reported. Kinetic study was investigated by monitoring the disappearance of the MLCT band in the UV–Vis spectra. The as prepared complex was applied for the synthesis of platinum thin film at liquid/liquid interface. The electrocatalytical activity of Pt thin film was investigated in methanol oxidation reaction.

CD/Ag/AgCl with higher photodegradation ability was synthesized. •OH radicals were the main active species in the oxidation of MO. The possible reaction mechanism was discussed in details.

Sulfur-resistant methanation of syngas was investigated over a series of MoO₃–ZrO₂ catalysts prepared by solution combustion method. The 15MoO₃–ZrO₂ catalyst achieved the highest CO methanation at 400°C. MoO₃ was dispersed on the surface of ZrO₂ and the Mo surface density was 4.2 Mo atoms nm⁻². The addition of MoO₃ to ZrO₂ leads to more tetragonal ZrO₂ with a reduction in particle size, giving an efficient catalyst for low-temperature CO methanation.

Supramolecular dinuclear triple-stranded iron (III)helicate was characterized by spectroscopic methods, and its crystal structure was determined by X-ray crystallography. The results were confirmed by the density functional theory calculations. The results obtained from the cytotoxicity test showed to be effective in low concentrations on the leukaemia cells. An intercalative binding mode of helicate-DNA complex was confirmed with the high intrinsic binding constant (K_b = 8×10⁶ M⁻¹) and competitive displacement assay of ethidium bromide with high Ksv value.

1. This is the first report on the use of nano crystalline CdS thin film as arecyclable heterogeneous catalyst for efficient synthesis of 1, 4dihydropyridine, polyhydroquinoline and 1,8-dioxodecaacridine derivatives.

2. The CdS catalyst was characterised by powder XRD, FT-IR, EDS analysis.

3. All the products were characterised by ¹H-NMR, ¹³C-NMR. FT-IR, CHN anlysis.

A series of neutral binuclear iridium and rhodium complexes were synthesized based on bis-imine ligands under mild conditions. Cyclic voltammetry characterization indicated that these stable half-sandwich late transition metal complexes were able to serve as catalysts for water oxidation process in acetonitrile-phosphate buffer.

(Fe₃O₄/CS-Cu NPs) is prepared as a nanocatalyst and successfully used in cross-coupling reactions of aryl halides with phenols to affords the corresponding diaryl ethers, with good to excellent yields.

Synthesis of medicinally important pyran-annulated heterocycles via multicomponentreaction Ag3[PMo12O40]•nH2Oas heterogeneous catalyst catalyzed synthesis of diverse pyran-fused chromeneanalogues.Themerits of this MCR approach are high yields and short reaction times.

Fe₃O₄@SiO₂-CMK-8 NPs were designed and successfully synthesized for the first time from Kit-6 mesoporous silica and sucrose. The synthesized core-shell Fe₃O₄@SiO₂-CMK-8 NPs were successfully used as a mesoporous carbon adsorbent for removal of Reactive Yellow dye from aqueous samples. The synthesized nanoparticles showed good magnetic properties, short adsorption times, high surface area and also, good efficiency for removal of Reactive Yellow dye.

Novel Schiff base and its metal complexes are prepared. Many analytical and spectroscopic tools are used for characterization of the prepared compounds. Biological activity and molecular docking are studied.

Two paths were used to heterogenize Schiff base molybdenum complex on infinite coordination polymer via coordination-polymerization. Prepared zinc-molybdenum based coordination polymer was used as efficient self-supported catalyst for olefins epoxidation. Cyclooctene shows highest catalytic activity among olefins.

Half-sandwich Ir^III TPA/Cz-Phpy complexes show potential anticancer activity towards A549, HepG2 and HeLa cells. Complexes could target lysosome and lead to lysosomal damage. Complexes could transport through serum protein (SA), catalyze the oxidation of nicotinamide-adenine dinucleotid (NADH), lead to the accumulation of reactive oxygen species (ROS), and eventually induce apoptosis.

A facile synthetic route enables the modulation of steric hindrance and electronic nature of SHOP-type nickel complexes. The newly synthesized bulky SHOP-type nickel complexes bearing ortho-biphenyl group on the phosphorous atom were used as single component catalysts toward ethylene polymerization to produce highly crystalline linear α-olefinic solid polymer without using any phosphine scavenger.

In recent years, many metalloporphyrins-based metal–organic frameworks (MOFs) have been developed, which exhibit some fascinating capacity in catalysis, gas storage, molecular recognition and drug delivery. However, there are few studies about metal–organic gels (MOGs), which are assembled to form 3D networks by hydrogen bonding, π-π stacking and/or van der Waals attractions. Compared to MOFs, MOGs suffer from the poor crystallinity, and their structure remain uncertain, but they also possess large interior surface areas with irregular open pores.

Ten Zn(II) and Cd(II) complexes involving bis(pyridyl) ligands have been synthesized, which present linear and zigzag chains, (4,4) and (6,3) layers, as well as 3D network with hxl topology. Furthermore, these complexes exhibit luminescent emission at room temperature with the emission maximum of these complexes varies from 374 to 448 nm.

• 1 AgBrO₃/AgBr withhigher photodegradation ability was synthesized.
• 2 ·OH radicals were the main active species in the oxidation of MO.
• 3 The possible reaction mechanism was discussed in details.

An inorganic-organic hybrid based on lanthanide clusters and Keggin type polyoxometalates (POMs) (Na[Nd (pydc-OH)(H₂O)₄]₃}[SiW₁₂O₄₀]) was synthesized for the first time. This trinuclear catalyst was used for one pot synthesis of pyrazolo [4́,3́:5,6]pyrido[2, 3-d]pyrimidine-diones. The catalytic activity of the hybrid catalyst has increased relative to each parent component due to the special interaction between Keggin anions and pydc-OH ligands.

• high-efficiency photocatalytic activity for selective reduction of nitroarenes to aminoarenes in short time
• Exhibited photocatalytic activity under low power visible light source (20 W LED).
• Low contacts of BiVO₄ on rGO were able to considerably improve the photocatalytic activity nitro group reduction

CuO/MoS₂ exhibited high performance in catalyzing AP decomposition and AP/nAl combustion. The existed chemical interactions between CuO and MoS₂ contributed to its excellant performance. 50% CuO loading showed the best catalytic performance.

Organometallic bismuth (v) dicarboxylates of the type BiR₃(OOCR′)₂ 1–7 have been synthesized, characterized and in vitro screened Leishmania tropica KWH23 and Jack Bean Urease. The binding patterns through molecular docking have also been employed to unveil the potency of the synthesized compounds against Lieshmania driven trypanothione reductase (TR) and Helicobacter pylori urease enzyme.

The synthesis and characterisation of anchored chromium (III) complex on reduced graphene oxide via diazonium Chemistry. Changes in the structure and morphology of rGO during the synthetic process was investigated. The anchored Chromium complex on rGO has enhanced electrochemical activity compared to the precursors.

Detection of Al(III) ion by their respective Ni(II) metal complexes via transmetalation are probed using various experimental and theoretical methods. The three Ni(II) complexes are prepared by varying the diimino spacer group and the detection efficiency is a function of the geometry of the metal center present in the probe.

The structures of a 4-Triphenylmethyl-1,2-benzoquinone (TPMBQ) and its mononuclear metal chelates were characterized using various physicochemical techniques. The FT-IR spectral data showed that the 4-Triphenylmethyl-1,2-benzoquinone (TPMBQ) acts as a tetradentate ligand and its manner of coordination is through the four oxygen atoms. The thermal behavior of these chelates gives an idea about the thermal stability of these chelates. The results of the antibacterial activity study indicate that the metal chelates show greater inhibitory effects than the parent ligand. These antibacterial activities are confirmed by theoretical molecular docking calculations.

• Nano-magnetite supported N-heterocyclic carbene-copper complex with wingtip ferrocene was synthesized.
• The complex was employed efficiently for intramolecular O-arylation of o-iodoanilides.
• The complex could be successfully reused up to twelve consecutive runs.

A novel dark resonance energy transfer (DRET) off–on cassette was constructed by coupling a silole donor with a rhodamine acceptor for the selective detection of Sn⁴⁺ ion in methanol aqueous solution.

Four dinuclear phenyl diboronates of β-enamino esters in which each boron atom has tetrahedral geometry have been synthesized and characterized. These compounds exhibit significant antimicrobial activities and antiandrogenic effect on male albino rats. Antimicrobial inhibition and antiandrogenic effect of boron compounds is more than the corresponding free β-enamino ester. Theantimicrobial activities increase with the increase in concentration of the compounds.

For the first time a promising photoluminescence approach for T3 hormone determination based on Cu-MOF-NPs. This approach could be promising analytical tool for early diagnosis of the cases thyroid disease. The proposed approach offered many advantages, wide concentration range 0.0-200.0 ng/dL, a lower LOD=0.198 ng/dL and LOQ=0.60 ng/dL than other published reports. Cu-MOF-NPs has a selectivity and sensitivity for T3 hormone without interfering with other hormones. The mechanism of quenching between the Cu-MOF-NPs and T3 hormone was dynamic type.

In this study, nanocrystalline cellulose (NCC) prepared using high-intensity ultrasonication and characterized via UV–vis, FE-SEM, EDS, TEM, XRD, FT-IR and TGA. The obtained NCC utilized as support, reducing and stabilizing agent for in-situ green synthesis of silver nanoparticles (Ag NPs). The catalytic activity of composite was examined for degradation of methyl orange (MO) and 4-nitrophenol (4-NP).

Rapid "in-core" heating of dipoles and ions by microwave irradiation (MI) modulated functionality and dynamic (reducing and capping) behavior of gum Ghatti (Anogeissus latifolia) bio-template for favorable forward favorable kinetics during green synthesis of gold nanoparticles of high Zeta potential, low particle size and narrow size distribution index. Subsequently, in comparison to conventional thermal method, MI processed nanoparticles also favored relatively higher catalytic performances with toxic 4-Nitrophenol dye reduction into safer 4- Aminophenol analogue.

Highly catalytic activity of Fe-MCM-41-IL recoverable nanocomposites was prepared and demonstrated for synthesis of library benzodiazepines under green method: ultrasound irradiation, water solvent and room temperature.

MnO₂ aerogels has a 3D hierarchical structure. MnO₂ aerogels are superhydrophobic and superlipophilic. MnO₂ aerogels has high circulation and stability in extreme environment.

• This work is the first report on the usage of apple seed as a biosupporting catalyst.
• We disclose the first report on the use of 2,2′-furil as a ligand in the catalyst modifications and catalytic activity.
• The biocatalyst showed superior activity in the Mizoroki–Heck and the Suzuki–Miyaura reactions.

0.6Pd1.2Ga bimetallic catalyst exhibits high performance and good stability in the hydrogenation of 2-ethylanthraquinone. Incorporation of Ga improves Pd dispersion and generates a strong interaction between Ga₂O₃ and Pd interface. DFT calculation results indicate that the strong adsorption of carbonyl group on Ga₂O₃/Pd interface facilitates the activation of EAQ and promotes the hydrogenation efficiency.

The Cl in raw material is substituted by amine group.Ether bond can also react with amine group.Amine and carboxyl group can improve adsorption capacity.

The conduction mechanism is assured by CBH model.

• The adsorption properties of NO and NH₃ gas molecules adsorbed on Pt/xN-GN (x = 0,1, 2, 3) is revealed;
• The substrate has a significant effect on the adsorption characteristics of NO and NH₃ molecules;
• The Fermi softness is a great descriptor for the adsorption activity of the Pt/xN-GN.

3D organometallic Ag coordination polymer was synthesized by sonochemicalprocedure. Mechanochemical reaction of it with 2-aminopyridine was studied in solid-state. The AgO₃Ag···C₆ coordination sphere of Ag changed to NO₂Ag···C during this reaction.

(1) A new extractant (PPDE) was synthesized under mild conditions.

(2) PPDE was combined with DNNSA to form mixture extractants system, which applied to recover nickel from impurities

(3) The mixture extractants system has an excellent extraction efficiency and selectivity to nickel.

(4) The extracted nickel complex was determined as [Ni(PPDE)₂(DNNSA) ₂(H₂O)₄]by the aid of spectra (FT-IR, UV-VIS and ESI-MS).

Bimetallic silver and copper incorporated mesoporous MCM-48 (Ag/CuO/MCM-48) was synthesized by simple wet-impregnation method, and its catalytic activity was examined in one-pot three-component synthesis of novel pyran-pyrrole hybrid derivatives.

Catalytic activity of octahedral Cu₂O nanoparticles in the removal of rhodamine B (RB)

Novel functionalized graphene with enhanced adsorptive properties for cadmium ions was synthesized. Removal process was optimized using response surface methodology and validity of response model was verified. The kinetic, isotherm, and thermodynamic of the sorption process were examined. Moreover, a magneto-responsive surfactant was prepared and used for the reversible recovery of adsorbent.

Threechromium ternary complexes with metformin (met) as a primary ligand andbipyridine (bipy) or ortho-phenylenediamine (opda) or ortho-phenanthroline (phen)as secondary ligand bind to DNA via groove binding.

Schematic presentation of production process of palladium-decorated hematite nanotubes on the surface of iron plates.

Three nickel complexes with high sulfur content ligands were prepared. Single crystal XRD studies for the binary thiosemicarbazone complex confirmed the constitution of its asymmetric unit of two independent complex molecules with slightly different conformations. The complexes displayed high bactericidal activities that, in several instances, were comparable to or higher than those of the chloramphenicol standard.

Four new macrocyclic dinuclear dibutyltin(IV) dithiocarbamate complexes of the type [Bu₂Sn(dtc)]₂ have been prepared. The coordination sphere around the tin atom in all the complexes can be described as a skew trapezoidal bipyramid. The dimensions of the cavity of the macrocycles are ca 8.0 × 9.0 Å². All the complexes were evaluated for their in vitro anticancer activity against MCF-7 and HL-60 cells. Thermal decomposition of the complexes yielded tin sulfide nanoparticles.

In this study, an efficient and green procedure is explained for the preparation of 1-amidoalkyl-2-naphthols applying one-pot condensation reaction of 2-naphthol, benzamide and aromatic aldehydes in the presence of polyvinylpyrrolidone (PVP) immobilized on 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium chloride-grafted magnetic silica-coated Fe3O4 nanoparticles (Fe3O4@SiO2@IL-PVP) as a novel solid acid catalyst under solvent-free conditions.

Across linked GO-zirconium-porphyrin catalyst has been prepared. All analyses confirm the successful covalent immobilization of ZrPPh on the GO. The activity of the catalyst was studied for the synthesis of 3,4-dihydropyrimidin-2(1H)-onesvia Biginelli reaction.

Eight disubstituted benzyltin complexes have successfully prepared. Complexe 2b exhibited strong antitumour activity on HepG2 cells and was expected to be a suitable platform for further chemical optimization to develop as anticancer therapeutics.

Easy and uncomplicated method for the synthesis of supported catalysts 5–8. Oxidation of alkenes by the catalysts 5–8 proceeds through the reactive intermediate copper hydroperoxo species ([Cu^III (sal-sch)-O-O-H]), established by electronic absorption spectroscopy, liquid chromatography-mass spectrometry and EPR spectroscopy. Easy separation, higher thermal stability, uncomplicated synthesis, green, and high efficiency makes the supported catalysts an effective choice for the catalytic oxidation of alkenes.

Surfaces and maps of selected inhibitors in binding sites against three cancer proteins.

Single crystals X-ray diffraction of novel metal chelates derived from tricine were characterized by spectroscopic studies. Spectral, magnetic and thermal, DFT parameters were used to prove the liberation of a proton from COOH rather than NH groups.

HighlightsBiosynthesis of the Cu/bone nanocomposite using Cordyline fruticosa aqueous extract.The use of bone as natural support to avoid the aggregation of the Cu NPs.Characterization of the Cu/bone nanocomposite by FE-SEM, XRD, EDS, elemental mapping and TEM.Synthesis of 1-substituted 1H-1,2,3,4-tetrazoles using Cu/bone nanocomposite.Cu/bone nanocomposite showed good catalytic performance in the reduction of 4-NP, NS, CR and MB.

New oxime palladacycles have been successfully synthesized using an oxime palladacycle and diphosphine ligand (dppm, dppe and dppmS₂) at the first time. Different coordination modes such as P-, P,P and S,S-coordinated are found in oxime palladacycles.

The synthesis process for thiazole derivatives 5a–e.

Co₃O₄ nanoparticles were prepared in new microvawe-associted methodology. Their structure were deduced by SEM, XRD, VSM, EDS and TEM analyses. These nanostructures used as a novel nanocatalyst for synthesis of 5-arylidine (thio)barbituric acid and Meldrum's acid derivatives in green media.

M(III) complexes derived from polyazine as monometallic as well as three bimetallic and mixed ligand complexes were synthesized and characterized. Biological studies were tested giving promised results.

The paper describes the fabrication of screen-printed electrodes modified with methyl red as electroactive material and the preparation and characterization, using spectroscopic tools, of Fe(II)–methyl red complex which was used for the construction of carbon paste electrodes. The two proposed electrodes were successfully applied for the determination of Fe(II) in water and pharmaceutical (pharovit) samples.

A stable fluorescent Zn metal-organic framework was successfully prepared under hydrothermal conditions. The Zn-MOF showed a high sensibility of nitro-aromatic compounds (NACs) and Fe³⁺ ions, especially for 4-(4-nitropheny lazo) resorcinol (NPLR). This sensor is remarkable recyclable and is promisingly applied for rapid, on-site sensing of explosive residuals.

A catalytic amount of cesium carbonate (10 mol%) was found to be capable of effectively catalyzing the insertion of indium powder into alkyl iodides. The thus-generated alkyl indium reagents could readily undergo palladium-catalyzed cross-coupling reactions with a wide variety of aryl halides, showing compatibility to a range of important functional groups.

By using commerciallyavailable melamine and formaldehyde as the starting materials, magneticmesoporous melamine-formaldehyde resin (MMF@Fe3O4) possessinglarge surface area was prepared via a simple method and could be used as theefficient adsorbent of magnetic solid phase extraction. Compared with the traditionalsynthetic methods of MMF@Fe3O4, this approach is easilyoperated under mild conditions, time saving and environment-friendly, and canproduce the materials in high yields. The asprepared MMF@Fe3O4possesses good adsorption capacity and selectivity for silver ions.

Zinc molybdates were synthesized by the hydrothermal method and combined with peroxymonosulfate (PMS) oxidant to advance water treatment application. The efficient ZnMoO₄/PMS/UV system was applied successfully for pirimicarb removal from environmental water samples. The active species and plausible mechanisms of the photocatalytic decomposition of pirimicab using the ZnMoO₄/PMS/UV system are evaluated and proposed.

Visualization of the three-dimensional network structure of SCP1 in the ab-plane showing the multi-fold equivalent interpenetrating frames of SCP1.

A series of polyoxometalate-based heterogeneous catalysts (Co-/Fe-/Cu-POM-octyl-NH₃-SBA-15) were synthesized via immobilized Co/Fe/Cu mono-substituted phosphotungstic acids on octyl-amino-co-functionalized SBA-15. Co-/Fe-/Cu-POM-octyl-NH₃-SBA-15 with both Brønsted and Lewis acid sites showed excellent activity in cyclohexene epoxidation with the order of Co-POM-octyl-NH₃-SBA-15 > Fe-POM-octyl-NH₃-SBA-15 > Cu-POM-octyl-NH₃-SBA-15. Hydrophobic alkyl groups in SBA-15 surface accelerated diffusion of reactants to catalysis center. Besides, Co-POM-octyl-NH₃-SBA-15 exhibited better activity than that of some different heteropolyacid-based supported catalysts reported for cyclohexene epoxidation, and it was reused six times with consistent activity.

A bimodal medical agent, TPP-M-Gd, was developed to give more detailed information of biological and disease-related events through NMR and fluorescence imaging. In vivo and in vitro studies suggested that the synthesized agent could enhance T₁-weighted magnetic resonance imaging. The imaging in cells showed its potential function as a fluorescence probe. Low cytotoxicity makes it quite safe for clinical application.

Dehydrative direct amidation of carboxylic acids and amines are efficiently catalyzed by a zirconocene trifluoromethanesulfonate complex in the absence of water scavenging techniques.

Mesoporous carbons bearing ultra-small palladium nanoparticles are reported. They showed an outstanding activity for Suzuki couplings in water using extremely low amounts of palladium.