以手性两亲小分子为模板剂制备介孔二氧化硅纳米空心球

摘要

以 L-亮氨酸为手性源合成了手性阳离子两亲性小分子化合物 L-18Leu6NEtBr ，用其自组装体作为模板，氢氧化钠为催化剂，经溶胶-凝胶过程制备出介孔二氧化硅纳米空心球；分析了介孔二氧化硅纳米空心球的尺寸和孔径．结果表明，所制备的二氧化硅空心球直径约100 nm ；其介孔孔道平行于壳表面，孔径为3．1 nm ．%Silica hollow nanospheres with single-layer mesopores in their shells were prepared through a sol-gel transcription approach via the self-assembly of a chiral low-molecular-weight amphiphile derived from L-leucine as the template and sodium hydroxide as the catalyst .The size and pore diameter of as-synthesized silica hollow nanospheres were analyzed .It was found that as-synthesized silica hollow nanospheres have a diameter of about 100 nm ;their meso-porous channels are parallel to their shell surface ,and the diameter of their pore channels in the shells is about 3 .1 nm .