4-Chloro-2-[(2,6-diisopropyl­phen­yl)imino­meth­yl]phenol

The asymmetric unit of the title compound, C19H22ClNO, contains two independent mol­ecules in which the dihedral angles between the aromatic rings are 76.45 (9) and 74.69 (9)°. An intra­molecular O—H⋯N hydrogen bond occurs in each mol­ecule. The crystal structure features weak C—H⋯π inter­actions

(E)-4-Bromo-2-[(2,6-diisopropyl­phen­yl)imino­meth­yl]phenol

In the title compound, C19H22BrNO, the dihedral angle between the benzene rings is 76.17 (14)° and an intra­molecular O—H⋯N hydrogen bond with an S(6) graph-set motif is present. One methyl group is disordered over two sets of sites with site occupancies of 0.66 (3) and 0.34 (3). A weak inter­molecular C—H⋯π inter­action is observed in the crystal structure

2-[(2,6-Diisopropyl­phen­yl)imino­meth­yl]-4-iodo­phenol

The asymmetric unit of title compound, C19H22INO, contains two independent mol­ecules. Classical intra­molecular O—H⋯N hydrogen bonds stabilize the mol­ecular structures. The crystal structure is stabilized by weak inter­molecular C—H⋯π and π–π [centroid–centroid = 3.8622 (18) Å] inter­actions. In both mol­ecules, the aromatic rings are nearly perpendicular to each other [dihedral angles = 84.26 (17) and 86.69 (15)°]

2-Bromo-4-chloro-6-[(2,6-diisopropyl­phen­yl)imino­meth­yl]phenol

There are two molecules in the asymmetric unit of the title compound, C19H21BrClNO, with dihedral angles between the aromatic rings of 70.0 (2) and 81.9 (3)°. The crystal structure is stabilized by inter­molecular C—H⋯π and C—Br⋯π inter­actions. In additional, the stacked mol­ecules exhibit intra­molecular O—H⋯N hydrogen bonds

Enhanced magnetic property and antibacterial biomedical activity of Ce3+ doped CuFe2O4 spinel nanoparticles synthesized by sol-gel method

In the present study, spinel copper ferrite (CuFe2O4) nanoparticles (NPs) doped with different concentrations of rare earth element (REE) Cerium (Ce3+) ions were synthesized by the simple sol-gel combustion technique. REE Ce3+ ions were successfully doped into the spinel lattice of CuFe2O4 NPs without any distortion. It was analyzed that the influence of Ce3+ ions on structure, surface morphology, magnetic behavior and antibacterial activities using different instrumental techniques such as powder XRD, SEM, EDX, TEM, SAED and VSM, etc. Powder XRD results and SEM images along with EDX techniques confirmed the spinel phase formation of pure and Ce3+ doped CuFe2O4 NPs with spherical shaped morphology without any other secondary phase impurity. It also was further confirmed by TEM and SAED analysis. The magnetic behavior of the Ce 3+ doped CuFe2O4 NPs was recorded using the VSM technique at room temperature (RT). The magnetic characterizations have been altered by the addition of Ce3+ ions in the CoFe2O4 lattice. The antibacterial properties of Ce3+ doped CuFe2O4 NPs was found to be enhanced with increase in Ce3+ concentrations as it cause a reduction in the grain size

Influence of Ce³⁺ on the Structural, Morphological, Magnetic, Photocatalytic and Antibacterial Properties of Spinel MnFe₂O₄ Nanocrystallites Prepared by the Combustion Route

The present work describes the effect of Ce3+ ion doping on the structural, morphological, and magnetic properties of spinel manganese ferrite (MnFe2O4) nanocrystallites (NCs) using various instrument techniques. Rare earth element (REE) Cerium (Ce3+) doped MnFe2O4 NCs were prepared by a simple microwave combustion technique. In the present scenario, ferrites are widely used for photocatalytic dye degradation and antibacterial applications. Aiming to achieve this, we prepared Ce3+ doped MnFe2O4 NCs by microwave combustion method and urea as burning agent and the obtained powder samples were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), high resolution scanning electron microscope (HR-SEM), high resolution transmission electron microscope (HR-TEM) and vibration sample magnetometer (VSM) techniques. The pure spinel phase formation was confirmed by XRD analysis. FTIR spectra show two prominent absorption bands under 1000 cm−1, which confirms the formation of the spinel structure. HR-SEM and HR-TEM pictures demonstrated a sphere-shaped morphology and also expose the combination and agglomeration of grains, which are mostly due to the magnetic characteristics of the samples. The magnetic properties of the synthesized MnCexFe2−xO4 (x = 0.0, 0.1, 0.3, and 0.5) NCs were studied by VSM analysis at room temperature (RT) shows ferromagnetic behavior. The photodegradation results showed that MnFe2O4 and Ce doped MnFe2O4 NCs have a higher potential to degrade methylene blue (MB) and the sample MnCe0.3Fe1.7O4 NCs showed superb photocatalytic performance (91.53%) compared to other samples. The antibacterial activities of Gram-positive S. aureus, B. subtilis and Gram-negative K. pneumonia and E. coli were investigated using pure and Ce3+ substituted MnFe2O4 NCs and a higher activity for MnCe0.3Fe1.7O4 NCs than other samples was observed, which indicated that they can be used in biomedical applications

Influence of Ce3+ on the Structural, Morphological, Magnetic, Photocatalytic and Antibacterial Properties of Spinel MnFe2O4 Nanocrystallites Prepared by the Combustion Route

The present work describes the effect of Ce3+ ion doping on the structural, morphological, and magnetic properties of spinel manganese ferrite (MnFe2O4) nanocrystallites (NCs) using various instrument techniques. Rare earth element (REE) Cerium (Ce3+) doped MnFe2O4 NCs were prepared by a simple microwave combustion technique. In the present scenario, ferrites are widely used for photocatalytic dye degradation and antibacterial applications. Aiming to achieve this, we prepared Ce3+ doped MnFe2O4 NCs by microwave combustion method and urea as burning agent and the obtained powder samples were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), high resolution scanning electron microscope (HR-SEM), high resolution transmission electron microscope (HR-TEM) and vibration sample magnetometer (VSM) techniques. The pure spinel phase formation was confirmed by XRD analysis. FTIR spectra show two prominent absorption bands under 1000 cm−1, which confirms the formation of the spinel structure. HR-SEM and HR-TEM pictures demonstrated a sphere-shaped morphology and also expose the combination and agglomeration of grains, which are mostly due to the magnetic characteristics of the samples. The magnetic properties of the synthesized MnCexFe2−xO4 (x = 0.0, 0.1, 0.3, and 0.5) NCs were studied by VSM analysis at room temperature (RT) shows ferromagnetic behavior. The photodegradation results showed that MnFe2O4 and Ce doped MnFe2O4 NCs have a higher potential to degrade methylene blue (MB) and the sample MnCe0.3Fe1.7O4 NCs showed superb photocatalytic performance (91.53%) compared to other samples. The antibacterial activities of Gram-positive S. aureus, B. subtilis and Gram-negative K. pneumonia and E. coli were investigated using pure and Ce3+ substituted MnFe2O4 NCs and a higher activity for MnCe0.3Fe1.7O4 NCs than other samples was observed, which indicated that they can be used in biomedical applications