Hybrid nanoparticles with a large bridging organic group were prepared by mechanochemical-assisted sol-gel reaction. Planetary ball mill (PBM) was used for the first time to access the bis-silylated precursors, containing complex functionalities (such as hydantoins or a symmetrical urea obtained from α-amino esters). The process is based on a sequential reaction pathway involving liquid-assisted grinding (LAG) and 1,1′-carbonyldimidazole (CDI)-mediated one-pot/two-step reactions. Then hydantoins and the symmetric urea were used for the one-pot preparation of the corresponding bis-silylated compounds in a vibrational ball mill (VBM), followed by the mechanochemical sol-gel preparation of biohybrid bridged silsesquioxane nanospheres of uniform size.

From Molecules to Silicon-Based Biohybrid Materials by Ball Milling

Lupacchini, Massimiliano;Mascitti, Andrea;Tonucci, Lucia;D'Alessandro, Nicola;
2018

Abstract

Hybrid nanoparticles with a large bridging organic group were prepared by mechanochemical-assisted sol-gel reaction. Planetary ball mill (PBM) was used for the first time to access the bis-silylated precursors, containing complex functionalities (such as hydantoins or a symmetrical urea obtained from α-amino esters). The process is based on a sequential reaction pathway involving liquid-assisted grinding (LAG) and 1,1′-carbonyldimidazole (CDI)-mediated one-pot/two-step reactions. Then hydantoins and the symmetric urea were used for the one-pot preparation of the corresponding bis-silylated compounds in a vibrational ball mill (VBM), followed by the mechanochemical sol-gel preparation of biohybrid bridged silsesquioxane nanospheres of uniform size.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11564/687238
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