Highly ordered arrays of mesoporous silica nanorods with tunable aspect ratios from block copolymer thin films
Highly ordered arrays of mesoporous silica nanorods with tunable aspect ratios from block copolymer thin films
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DOI：
10.1002/adma.200702010
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发表时间：
2008-02-18
影响因子：
29.4
通讯作者：
Iyoda, Tomokazu
中科院分区：
文献类型：
--
作者：
Chen, Aihua;Komura, Motonori;Iyoda, Tomokazu
以PEOm-b-PMA(Az)(n)嵌段共聚物薄膜为模板制备了具有可调长宽比的高有序介孔二氧化硅纳米棒阵列。二氧化硅前驱体对薄膜的渗透和薄膜厚度共同控制了SiO2纳米棒的生长，可以达到近200 nm的高度。在SiO2纳米棒内部，形成了直径约为2nm的介孔通道，这些介孔通道沿着纳米棒的纵轴排列。
Highly ordered arrays of mesoporous silica nanorods with a tunable aspect ratio can be fabricated using PEOm-b-PMA(Az)(n) block copolymer thin films as templates. Together, penetration of the films by the silica precursor and the film thickness control the SiO2 nanorod growth, and heights of almost 200 nm can be achieved. Inside the SiO2 nanorods, mesochannels with a diameter of similar to 2 nm are formed that are aligned along the longitudinal axis of the rod.