Dipeptide-functionalized mesoporous silica spheres
作者： Alain Walcarius , Stéphanie Sayen , Christine Gérardin , Faouzia Hamdoune , Ludwig Rodehüser
DOI: 10.1016/J.COLSURFA.2003.11.010
关键词: Mesoporous silica 、 Mesoporous material 、 Inorganic chemistry 、 Carbon paste electrode 、 Surface modification 、 Catalysis 、 Bromide 、 Specific surface area 、 Infrared spectroscopy 、 Materials science 、 Chemical engineering
摘要: Abstract The preparation of surfactant-templated mesoporous silica spheres functionalized with carnosine moieties (dipeptide β-alanyl- l -histidine) is described. procedure involves the hydrolysis and co-condensation a carnosine-containing organotriethoxysilane tetraethoxysilane (TEOS) in water/ethanol solution presence ammonia acting as catalyst cetyltrimethylammonium bromide (CTAB) templating agent. resulting organic–inorganic hybrid displays spherical shape evidenced by electron microscopy narrow particle size distribution. It exhibits high specific surface area (775 m2 g−1), determined from N2 adsorption isotherm, XRD pattern characteristic mesostructure wormholelike framework. Functionalization was confirmed IR spectroscopy solid-state 29 Si 13 C MAS NMR. regular structure can be advantageously exploited processes where diffusion rate-determining step, exemplified for electrochemical detection trace copper(II) after preconcentration at carbon paste electrode modified material.
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