Fabrication of Silver Nanowires by Selective Electroless Plating of DNA Stretched Using the LB Method
Fabrication of Silver Nanowires by Selective Electroless Plating of DNA Stretched Using the LB Method
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DOI：
10.1246/cl.2005.112
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发表时间：
2005-01
影响因子：
1.6
通讯作者：
Y. Hashimoto;Y. Matsuo;K. Ijiro
中科院分区：
文献类型：
--
作者：
Y. Hashimoto;Y. Matsuo;K. Ijiro
采用选择性化学镀方法对双链DNA进行了精确均匀的金属化，制备了纳米线。顺铂与模板DNA分子结合并还原成铂，然后催化银金属沉积。使用Langmuir-Blodgett（LB）方法将与铂簇结合的DNA分子拉伸并固定在玻璃基底上。通过还原银离子对铂结合的DNA分子进行无电镀，产生均匀的银纳米线（约1.5 μ m）。宽度和高度为沿着拉伸的DNA分子）。导电原子力显微镜测量显示，距离微电极边缘6μm的长度上具有高电导率。
Precise and uniform metallization of double-stranded DNA by the selective electroless plating method was investigated for the fabrication of nanowires. Cis-platin was bound to template DNA molecules and reduced to platinum which then catalyzed silver metal deposition. The DNA molecules combined with the platinum clusters were stretched and immobilized on a glass substrate using the Langmuir-Blodgett (LB) method. The electroless plating of the platinum-bound DNA molecules by the reduction of silver ions yielded uniform silver nanowires (ca. 50 nm in width and height) along the stretched DNA molecules. Conductive AFM measurements revealed that a high electric conductivity over a length of 6μm from the edge of a micro electrode.