Poly(ethylene glycol) (PEG)‐coated superparamagnetic MnFe2O4 ferrite nanoparticles are of great interest for application in magnetic fluid hyperthermia (MFH) due to their heat generation capability in an external alternating magnetic field, besides biocompatibility, and surface properties. MFH has emerged as a promising therapeutic approach for cancer treatment and is based on controlled heating tumor tissue through the accumulation of MnFe2O4 ferrite nanoparticles within cancer cells. In the present work, MnFe2O4 superparamagnetic ferrite nanoparticles via the chemical combustion method are synthesized. The preparation of PEGylated MnFe2O4 ferrite nanoparticles, which involves the attachment of such molecules at the surface, without the need for coupling agents or prior modification on the species involved. The conjugation of folate onto MnFe2O4 ferrite nanoparticles is confirmed by FTIR spectroscopy. The MnFe2O4 ferrite nanoparticles are colloidal stable. The obtained targeted PEGylated MnFe2O4 ferrite nanoparticles show superparamagnetic behavior with a saturation magnetization of 78.68 emu·g−1 at 300 K. Their specific absorption rate (SAR) ranged from 43.2 to 19.5 W g−1 in an alternating magnetic field of 5—20 kA m−1. The heat generated is sufficient to raise the sample temperature to the therapeutic range used in MFH establishing this system as promising candidates for use in MFH treatment.

Multicomponent spinel ferrites are essential to be used in high‐performance gas‐sensing materials. In the present work, Mn0.5Zn0.5Fe2O4 spinel ferrite thin film is prepared via spray printing technique. The prepared film can be easily retrieved and utilized for multiple cycles due to its magnetic properties. The morphology, composition, and crystal structure of Mn0.5Zn0.5Fe2O4 spinel ferrite thin film are examined using scanning electron microscopy, infrared spectroscopy, and X‐ray diffraction. The produced films are in the range of around 20 nm and manifest spinel cubic structure. The prepared film is tested for its sensitivity to NO2, NH3, H2, and H2S gases, and the Mn0.5Zn0.5Fe2O4 spinel ferrite thin film is found the most sensitive and selective to H2S gas. The prepared Mn0.5Zn0.5Fe2O4 spinel ferrite thin film shows enhanced sensing performance functional at low temperatures, and consequently, they need low operational power. They are also simple to fabricate at the appropriate cost.

A comparative study is made between the structure and electrochemical properties of Copper‐Zinc (Cu0.5Zn0.5Fe2O4) ferrite nanoparticles prepared by chemical co‐precipitation. The obtained ferrites are characterized by FT‐IR, XRD, BET, and SEM techniques. The single‐phase cubic formation of Cu0.5Zn0.5Fe2O4 nano ferrites without any impurity peaks is confirmed by XRD analysis. FT‐IR spectrum exposes the occurrence of vibrating modes analogous to the cubic‐spinel ferrite structure of Cu0.5Zn0.5Fe2O4 nano ferrites. The magnetic hysteresis curve displays the superparamagnetic nature of the Cu0.5Zn0.5Fe2O4 nano ferrites. The electrochemical properties of obtained ferrites are studied using cyclic voltammetry, charge‐discharge, and electrochemical impedance spectroscopy. The as‐synthesized Cu0.5Zn0.5Fe2O4 sample acts as an excellent electrode material in a supercapacitor with a high specific capacitance energy density and a power density.

The derivatives of urea, thiourea and thiosemicarbazide play an important role in medicinal chemistry by influencing various pharmacological activities. The design and development of novel N-maltosides have emerged as an important class of organic compounds. A series of 1-hepta-O-benzoyl-β-D-Maltosyl- 5-aryl-2-4-thiobiurets are described in present work. By mixing hepta-O-benzoyl→D-maltosyl isocyanates with various aryl thiocarbamides, 1-hepta-O-benzoyl-β-D-maltosyl-5-aryl-2-4-thiobiurets have been synthesized. The identities of this newly synthesized 1-hepta-O-benzoyl-β-D-Maltosyl-5- aryl-2-4-thiobiurets were characterized by IR, 1H NMR and mass analyses. The compounds tested for antibacterial activity against a wide range of microorganisms, including Staphylococcus aureus, Escherichia coli, Psudomonas aeruginosa and antifungal activities against Aspergillus niger and Trichoderma. TLC confirmed the activity of these compounds.