Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland.
CNRS, LCPME, Université de Lorraine, 54000 Nancy, France.
Int J Mol Sci. 2021 Jul 13;22(14):7505. doi: 10.3390/ijms22147505.
In this work, we have developed a chemical procedure enabling the preparation of highly ordered and vertically aligned mesoporous silica films containing selected contents of silver ions bonded inside the mesopore channels via anchoring propyl-carboxyl units. The procedure involves the electrochemically assisted self-assembly co-condensation of tetraethoxysilane and (3-cyanopropyl)triethoxysilane in the presence of cetyltrimethylammonium bromide as a surfactant, the subsequent hydrolysis of cyano groups into carboxylate ones, followed by their complexation with silver ions. The output materials have been electrochemically characterized with regard to the synthesis effectiveness in order to confirm and quantify the presence of the silver ions in the material. The mesostructure has been observed by transmission electron microscopy. We have pointed out that it is possible to finely tune the functionalization level by controlling the co-condensation procedure, notably the concentration of (3-cyanopropyl)triethoxysilane in the synthesis medium.
在这项工作中，我们开发了一种化学程序，能够制备高度有序和垂直排列的介孔硅薄膜，其中含有通过锚固丙基-羧基单元结合在介孔通道内的选定含量的银离子。该程序涉及在十六烷基三甲基溴化铵作为表面活性剂存在下电化学辅助的四乙氧基硅烷和（3-氰丙基）三乙氧基硅烷的自组装共缩合，随后将氰基水解成羧酸盐，然后与银离子络合。输出材料已经通过电化学特性进行了合成有效性的表征，以确认和量化材料中银离子的存在。通过透射电子显微镜观察到了介观结构。我们已经指出，可以通过控制共缩合程序，特别是在合成介质中（3-氰丙基）三乙氧基硅烷的浓度，精细地调整功能化水平。
