模板技术制备一维纳米纤维及其阵列

以阳极多孔氧化铝膜为模板 ,制备了一系列一维结构材料及其阵列体系 ,材料的结构和阵列方式可调 .主要包括两方面内容 :通过功能单体的自由基聚合 ,制备了核壳结构的双重凝胶纳米纤维PDMA/PNH4AA及其阵列 ,控制氧化铝膜表面的润湿性 ,双重凝胶纳米纤维的核壳结构可以发生相反转 ,通过银离子与PNH4AA相的选择性复合 ,制备了柔性银纳米纤维或管 ;结合嵌段共聚物的自组装和无机物的溶胶 /凝胶过程 ,制备了一维有序介孔二氧化硅及其阵列体系 ,改变嵌段共聚物的浓度 ,可以控制二氧化硅的介观结构 .此材料易于进行异质复合 ,因而便于制备功能性一维复合材料及其阵列体系

Template synthesis of uniform one-dimensional mesostructured materials and their arrays

We report the preparation of one\|dimensional hierarchically structured materials and their arrays in anodic porous alumina membranes. Phase invertible core/shell polymeric gel nanofibers and their arrays have been prepared by radical polymerization of functional monomers in membrane templates with tunable wettability. By incorporating the functional material in a selected phase, flexible functional nanotubes or nanofibers can be formed. Mesostructured silica nanotubes and nanofibers by co\|assembly of block copolymer and inorganic sol/gel process have been obtained. The mesostructure morphology can be adjusted by changing the copolymer concentration. Both the interior cavity of the tubes and the mesopores can be used as meso\|containers to incorporate functional components forming one\|dimensional hierarchically structured functional materials and their arrays.