Modification of fumed silica surface with different sulfonamides via a postsynthesis method and their application as antibacterial agents - 06/05/17

, Farzaneh Zandi b, Ali Abolhasani Soorki c, Alireza Badiei d, Fatemeh Yazdian eCet article a été publié dans un numéro de la revue, cliquez ici pour y accéder
Abstract |
The surface of nanosized fumed silica (FSi) was modified with different amine groups by the use of silylating agents. The obtained propylamine, propylpiperazine, and propyl-p-phenylenediamine–modified FSi were treated with different sulfonyl chlorides to gain sulfonamide-modified FSi compounds. These compounds were characterized by various techniques including Fourier transform infrared spectroscopy, thermogravimetric analysis, differential thermal analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy (EDX), confirming the grafted sulfonamides on the FSi surface. Sulfonamide-modified surfaces are efficient catalysts for the Michael addition-based syntheses and coupling reactions. Furthermore, the antibacterial tests showed that these modified FSi compounds have antibacterial activities and thus are useful materials for preparing antibacterial silicone-based compounds such as silicone glue and oil.
Le texte complet de cet article est disponible en PDF.Keywords : Fumed silica, Sulfonamide, Antibacterial activity, Grafting method, Postsynthesis
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