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采用自组装形成的芘纳米结构作为模板,成功地制备了柔软的球状和长方体状氧化硅中空结构.当不同量的芘在十六烷基三甲基溴化铵(CTAB)溶液中自组装时,产生的自组装结构展现出明显的从球状到长方体状的形貌变化.这些结构被用作氧化硅前驱体溶胶-凝胶反应的模板,获得了球状和长方体状氧化硅/芘复合结构.通过乙醇除去模板后,生成了柔软的球状(直径约为400nm)和长方体状(长为0.5—2.5μm)的氧化硅中空结构.这些结果展现了采用有机纳米结构作为模板来合成无机中空结构的优势:合成简便、结构多样以及结构形貌的灵活可控.
The self-assembled pyrene nanostructures were successfully used as templates to prepare flexible spherical and cuboidal silica hollow structures.When different amounts of pyrene were self-assembled in cetyltrimethylammonium bromide (CTAB) solution , The resulting self-assembled structure exhibited a distinct morphological change from spherical to cuboidal shape.These structures were used as templates for the sol-gel reaction of silica precursors, and spherical and cuboidal silica / pyrene composites were obtained. After removal of the template by ethanol, a soft, spherical (about 400 nm in diameter) and cuboid (0.5-2.5 μm in length) hollow silica structure was formed These results demonstrate the use of organic nanostructures as templates to synthesize inorganic hollow structures Advantages: easy to synthesize, diverse structure and flexible structure of the controllable.