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Immobilization of albumin on aminosilane modified superparamagnetic magnetite nanoparticles and its characterization
Scopus
Toplam 275 atıf DOI
Magnetite nanoparticles (NPs) were synthesized by co-precipitating Fe2+ and Fe3+ in an ammonia solution. Magnetite NPs coated with 3-aminopropyltriethoxysilane (APTES) were prepared by silanization reaction. After activated with glutaraldehyde (GA), human serum albumin was covalently immobilized on these magnetic NPs. The influence of three different buffer solutions on covalent immobilization was studied. phosphate buffer saline solution (PBS) was shown the highest binding ability for immobilization process compared to other buffer solutions. The morphology and properties of these magnetic NPs were examined by transmission electron eicroscopy (TEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA) and magnetization measurement. © 2009 Elsevier B.V. All rights reserved.
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Spectrofluorometric and thermal gravimetric study on binding interaction of thiabendazole with hemoglobin on epoxy-functionalized magnetic nanoparticles
Scopus
Havuzumuzda 23 atıf almış
The interaction of thiabendazole (Tbz) with hemoglobin (Hb) on epoxy-functionalized iron oxide nanoparticles was presented in this study. The binding capacity of Tbz was determined by measuring at an excitation wavelength of 299 nm using fluorescence spectroscopy. The thermodynamic parameters of the Hb-Tbz interaction were calculated from Stern-Volmer and van't Hoff equations. The values of enthalpy change, δH, and entropy change, δS, were found to be 0.20 kJ mol<sup>- 1</sup> and 0.70 J mol<sup>- 1</sup> K<sup>- 1</sup>, respectively, which indicates that the hydrophilic interaction plays a main role in the binding process. The interaction ability was confirmed by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Also, the thermal behavior of the Hb-Tbz interaction on functionalized iron oxide nanoparticles was studied by using the thermogravimetric analysis (TGA) technique in the temperature range of 25-950 °C, and then the kinetic parameters for the thermal decomposition were determined using the Horowitz-Metzger method.