Mesoporous silica nanoparticles supported copper(II) and nickel(II) Schiff base complexes: Synthesis, characterization, antibacterial activity and enzyme immobilization

Tahmasbi, Leila; Sedaghat, Tahereh; Motamedi, Hossein; Kooti, M.

doi:10.1016/j.jssc.2017.11.015

Cited by 64 publications

(62 citation statements)

References 56 publications

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“…The XRD pattern of the Fe 3 O 4 @ MCM-41 shows an intense peak at 2θ = 2.13 and two weak peaks at 2θ = 3.54 and 4.35 , corresponding to the (1 0 0), (1 1 0) and (2 0 0) planes, respectively, which are characteristic of a hexagonal pore system. [52,53,[56][57][58][59][60] Fe 3 O 4 @MCM-41-SB-Cu gives only one broad peak at low angle corresponding to (1 0 0) plane. This broadening and disappearing of XRD peaks are due to functionalization that reduces the order of mesostructure.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase

Ahmadi

Sedaghat

Motamedi

et al. 2020

Applied Organom Chemis

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Magnetic mesoporous silica nanocomposite, Fe3O4@MCM‐41, was prepared and functionalized with N‐(2‐aminoethyl)‐3‐aminopropyltrimethoxysilane (AEAPS). Then Schiff base grafted nanoparticles were synthesized by the condensation of 5,5'‐methylene bis (salicylaldehyde) and then benzhydrazide with Fe3O4@MCM‐41‐AEAPS. Finally, by adding Cu (CH3COOH)2.H2O, the magnetic nanoparticles (MNPs) functionalized with Cu (II) Schiff base complex were synthesized. The new organic–inorganic hybrid nanocomposite was characterized by FT‐IR, PXRD, AAS, BET, TGA, VSM, FE‐SEM, HRTEM and EDX techniques. Then, the performance of this copper based magnetic nanocatalyst was investigated for the synthesis of 5‐substituted 1H‐tetrazole derivatives using one pot three‐component reactions of various aldehydes, hydroxyl amine hydrochloride and sodium azide. The catalyst can be easily isolated from the reaction mixture by applying an external magnet and reused for at least 5 times without significant loss in catalytic activity. Also, the antibacterial activity of the streptomycin loaded magnetic nanoparticles against Gram‐positive (S. aureus) and Gram‐negative (E. coli) bacteria in the presence and absence of a magnetic field were studied. Results revealed that when these materials exposed to the magnetic field, bacteriostatic activity of nanocomposites was increased. Furthermore, the enzyme immobilization ability of the synthesized compounds was investigated and the results showed that these nanoparticles efficiently immobilized amylase enzyme.

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Section: Synthesis and Characterizationmentioning

confidence: 99%

Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase

Ahmadi

Sedaghat

Motamedi

et al. 2020

Applied Organom Chemis

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“…SiO 2 with multiple functional groups was involved for many applicable processes, for example stabilization of enzymes, bio‐catalysis and chemical wastes . Heterogeneous catalysts have the most modern essential role for progressing green chemistry in all chemical catalytic processes .…”

Section: Introductionmentioning

confidence: 99%

“…[24] New Cu (II)/Cu (II)-Mg (II) frameworks of pyridine-2,5-dicarboxylate were applied as a heterogeneous catalyst for epoxidation protocols by Saha et al [25] The catalytic epoxidation of olefins was investigated by involving mixed catalysts of copper-triazole complex and polyoxometalate acid heterogeneously. [26] SiO 2 with multiple functional groups was involved for many applicable processes, for example stabilization of enzymes, bio-catalysis [27] and chemical wastes. [28] Heterogeneous catalysts have the most modern essential role for progressing green chemistry in all chemical catalytic processes.…”

Section: Introductionmentioning

confidence: 99%

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Al-Hussein

Adam

2020

Applied Organom Chemis

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N‐Salicylidene amino acid Schiff base sodium sulfonate salt, as a tridentate dibasic chelating ligand, was obtained from the common condensation of salicylaldehyde‐5‐sodium sulfonate with tyrosine (HPST). The internal formed ligand coordinated to Cu2+ ion in an aqueous media affording new Cu (II)‐complex (Cu‐PST), which characterized by various physico‐chemicals spectral tools. The mononuclear complex was evaluated as a homogeneous and heterogeneous catalyst in the (ep)oxidation protocols of 1,2‐cyclooctene and benzyl alcohol. Heterogeneously, Cu‐PST was immobilized on Fe3O4‐SiO2, as nanoparticles. The heterogeneous catalyst was characterized by infrared, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, energy‐dispersive spectroscopy, Brunauer−Emmett−Teller and magnetism. Homogeneously, the temperature, solvent and oxidant influences were examined in the catalytic reactions to realize the best reaction conditions. Cu‐catalyst exhibited better catalytic performance in the (ep)oxidation processes homogeneously than that in the heterogeneous phase at 80°C for 2 hr in acetonitrile. Reusability of the homogeneous catalyst was for a maximum of three times in the (ep)oxidation reaction, whereas the heterogeneous catalyst was active for six times. A mechanistic pathway was proposed for both catalysts, comparatively.

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“…Sedaghat and co‐workers prepared MS NPs functionalized with 3‐aminopropyltriethoxysilane, which was reacted with 2‐hydroxy‐3‐methoxybenzaldehyde to obtain a Schiff base . The latter material was then treated with Cu(II) and Ni(II) separately to obtain copper and nickel complexes anchored on the mesoporous support.…”

Section: Ms In Antibacterial Applicationsmentioning

confidence: 99%

“…Sedaghat and co-workers prepared MS NPs functionalized with 3-aminopropyltriethoxysilane, which was reacted with 2-hydroxy-3-methoxybenzaldehyde to obtain a Schiff base. [290] The latter material was then treated with Cu(II) and Ni(II) separately to obtain copper and nickel complexes anchored on the mesoporous support. The nanocomposites were investigated for antibacterial activity against gram positive (B. subtilis and S. aureus) and gram negative (E. coli and P. aeruginosa) bacteria.…”

Section: Containing Supported or Adsorbed Metal Complexesmentioning

confidence: 99%

Mesoporous Silica‐Based Materials with Bactericidal Properties

Bernardos

Piacenza

Sancenón

et al. 2019

Small

145

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Bacterial infections are the main cause of chronic infections and even mortality. In fact, due to extensive use of antibiotics and, then, emergence of antibiotic resistance, treatment of such infections by conventional antibiotics has become a major concern worldwide. One of the promising strategies to treat infection diseases is the use of nanomaterials. Among them, mesoporous silica materials (MSMs) have attracted burgeoning attention due to high surface area, tunable pore/particle size, and easy surface functionalization. This review discusses how one can exploit capacities of MSMs to design and fabricate multifunctional/controllable drug delivery systems (DDSs) to combat bacterial infections. At first, the emergency of bacterial and biofilm resistance toward conventional antimicrobials is described and then how nanoparticles exert their toxic effects upon pathogenic cells is discussed. Next, the main aspects of MSMs (e.g., physicochemical properties, multifunctionality, and biosafety) which one should consider in the design of MSM‐based DDSs against bacterial infections are introduced. Finally, a comprehensive analysis of all the papers published dealing with the use of MSMs for delivery of antibacterial chemicals (antimicrobial agents functionalized/adsorbed on mesoporous silica (MS), MS‐loaded with antimicrobial agents, gated MS‐loaded with antimicrobial agents, MS with metal‐based nanoparticles, and MS‐loaded with metal ions) is provided.

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Mesoporous silica nanoparticles supported copper(II) and nickel(II) Schiff base complexes: Synthesis, characterization, antibacterial activity and enzyme immobilization

Cited by 64 publications

References 56 publications

Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase

Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Mesoporous Silica‐Based Materials with Bactericidal Properties

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