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صفحه اصلی
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بیست و نهمین کنفرانس شیمی آلی ایران
Preparation and characterization of SiO2/APTPOSS immobilized on Manganese Ferrite as core–shell nanomagnetic composite for synthesis of spirooxindoles
نویسندگان :
سمیرا معین نجف آبادی ( دانشگاه کاشان ) , جواد صفایی قمی ( دانشگاه کاشان )
کلید واژه ها :
magnetic nanoparticles،one-pot synthesis،spirooxindole
چکیده مقاله :
A polyhedral oligomeric silsesquioxane derivative called Octakis[3-(3-aminopropyltriethoxysilane)propyl]octa-silsesquioxane (APTPOSS) was synthesized and utilized as a pioneering reagent to produce a novel core-shell composite. This composite consisted of MnFe2O4 nanoparticles as the core and an inorganic-organic hybrid polyhedral oligomeric silsesquioxane as the shell. The confirmation of MnFe2O4@SiO2/APTPOSS was conducted through various analytical techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, dynamic light scattering, thermogravimetric analysis, X-ray diffraction, and vibrating sample magnetometry. These inorganic-organic hybrid polyhedral oligomeric silsesquioxane magnetic nanoparticles were employed as an effective heterogeneous catalyst for the one-pot synthesis of spirooxindoles derivatives. Additionally, these nanoparticles could be easily separated by an external magnet and subsequently reused multiple times without experiencing significant loss in their catalytic activity.
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