Formation of Titanium Nanostructures on Block Copolymer Templates with Varying Molecular Weights
Formation of Titanium Nanostructures on Block Copolymer Templates with Varying Molecular Weights
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DOI：
10.1021/ma501605s
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发表时间：
2014-12
期刊：
影响因子：
5.5
通讯作者：
M. Kreuzer;C. Simão;Ana Diaz;C. M. Torres
中科院分区：
文献类型：
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作者：
M. Kreuzer;C. Simão;Ana Diaz;C. M. Torres
提出了一种制备介孔钛膜和负载钛纳米颗粒六方阵列的新方法。在嵌段共聚物模板上蒸发的过程中，钛自组装成介孔膜或六方密堆积纳米点结构。钛的形态仅取决于嵌段共聚物的分子量，这导致相对于常规方法节省时间的显著制造技术。使用扫描电子显微镜，X射线反射计，和掠入射小角度X射线散射相关的钛的形态与掩埋的聚合物结构的分析。介孔钛膜的孔径约为16 nm，孔间距离为42 nm。六边形堆积的纳米点的平均尺寸为60 nm，与模板特征相称的中心到中心距离为88 nm。化学成分分析表明，其结构是二氧化钛，...
A novel and simple method for producing mesoporous titanium films and supported titanium nanoparticle hexagonal arrays is presented. During evaporation on block copolymer templates, titanium self-assembles as either a mesoporous film or as a hexagonal close-packed nanodot structure. The morphology of the titanium only depends on the molecular weight of the block copolymer, which results in a remarkable fabrication technique that saves time relative to conventional methods. Analyses using scanning electron microscopy, X-ray reflectometry, and grazing-incidence small-angle X-ray scattering correlate the morphology of the titanium with the buried polymer structure. The mesoporous titanium film exhibited a pore size of approximately 16 nm, with a pore-to-pore distance of 42 nm. The average size of the hexagonally packed nanodots was 60 nm, with a center-to-center distance of 88 nm commensurate with the template features. An analysis of the chemical composition showed that the structures were titanium dioxide,...