Xu Yeping, Xu Shangjie, Emmler Thomas, Roelofs Frank, Boettcher Christoph, Haag Rainer, Buntkowsky Gerd
Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany.
Chemistry. 2008;14(11):3311-5. doi: 10.1002/chem.200701806.
Mesoporous pure silicas and functionalized silica with a narrow pore size distribution centered at 3.8 nm were prepared by a novel template, amphiphilic dendritic polyglycerol. The resulting silica materials were characterized by electron microscopy; nitrogen adsorption; (1)H, (13)C, and (29)Si solid-state cross-polarization magic-angle spinning NMR spectroscopy. It was shown that the template could be completely removed from the pure and functionalized silica in an environmentally friendly way by means of a simple water extraction procedure. Furthermore, it was shown that these materials could be easily functionalized, for example, by employing aminopropyl groups. Thus, a new environmentally friendly pathway to this fascinating class of silica material has been opened.
采用新型模板两亲性树枝状聚甘油制备了孔径分布狭窄、中心位于3.8 nm的介孔纯二氧化硅和功能化二氧化硅。通过电子显微镜、氮吸附、¹H、¹³C和²⁹Si固态交叉极化魔角旋转核磁共振光谱对所得二氧化硅材料进行了表征。结果表明，通过简单的水萃取程序，可以以环境友好的方式从纯二氧化硅和功能化二氧化硅中完全去除模板。此外，结果表明这些材料可以很容易地进行功能化，例如通过使用氨丙基。因此，已经开辟了一条通往这类迷人二氧化硅材料的新的环境友好途径。
