Wu Limin, Shan Yuliang, Chen Yuxia, Chen Yuanli, Li Yi, Li Baozong, Yang Yonggang
Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
J Nanosci Nanotechnol. 2012 Mar;12(3):2037-44. doi: 10.1166/jnn.2012.5178.
Silica nanoflakes and nanospheres with perpendicular pore channels are attractive due to their potential applications. Herein, the nanoflakes were prepared using the self-assemblies of a chiral low-molecular-weight amphiphile, L-18Ala4PyBr, as the templates; and nanospheres were prepared using this amphiphile and cyclohexane as a co-structure-directing agent. By gradually increasing the bridging alkylene chain length of L-18Ala4PyBr, amphiphiles L-18Ala6PyBr and L-18Ala11PyBr were synthesized. Nanoflakes with perpendicular pore channels and nanoworms with horizontal pore channels were prepared using L-18Ala6PyBr and L-18Ala11PyBr, respectively. The hydrophobic association of the bridging alkylene chains should play an important role in controlling the morphologies and pore architectures of the mesoporous silicas.
具有垂直孔道的二氧化硅纳米片和纳米球因其潜在应用而备受关注。在此，纳米片是使用手性低分子量两亲物L-18Ala4PyBr的自组装作为模板制备的；纳米球是使用这种两亲物和环己烷作为共结构导向剂制备的。通过逐渐增加L-18Ala4PyBr的桥连亚烷基链长度，合成了两亲物L-18Ala6PyBr和L-18Ala11PyBr。分别使用L-18Ala6PyBr和L-18Ala11PyBr制备了具有垂直孔道的纳米片和具有水平孔道的纳米蠕虫。桥连亚烷基链的疏水缔合在控制介孔二氧化硅的形态和孔结构方面应起重要作用。
