Copper nanowires within the central channel of tobacco mosaic virus particles
Copper nanowires within the central channel of tobacco mosaic virus particles
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DOI：
10.1016/j.electacta.2006.04.007
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发表时间：
2006-09-15
影响因子：
6.6
通讯作者：
Kern, K.
中科院分区：
文献类型：
--
作者：
Balci, S.;Bittner, A. M.;Kern, K.
简单的电化学沉积技术可以在模板中产生高度定义的金属纳米结构。化学沉积（ELD）可以有效地用于在生物或塑料表面等绝缘体上沉积金属。对于生物分子模板，金属化方法通常仅限于轻度还原，并且通常不适用于pH值高于12的铜沉积。在烟草花叶病毒（TMV）颗粒4 nm宽的通道内，采用化学沉积的方法制备了直径3 nm、长度达150 nm的铜纳米线。我们采用了与生物分子相容的低pH（类似于7.5）铜化学沉积溶液。纳米线的制备工艺是基于在化学沉积之前用Pd（II）致敏烟草花叶病毒。我们利用能量过滤透射电子显微镜分析了纳米线的化学成分，并将该方法用于沉积在病毒通道内的镍和钴纳米线。(c) 2006 Elsevier Ltd.版权所有。
Simple electrochemical deposition techniques can produce highly defined metal nanostructures in templates. Electroless deposition (ELD) can be effectively used for depositing metals on insulators such as biological or plastic surfaces. With biomolecular templates, metallization methods are often restricted to mild reductions, and the deposition of copper at pH values above 12 is usually not applicable. We produced copper nanowires of 3 nm in diameter and up to 150 nm in length by electroless deposition within the 4 nm wide channel of tobacco mosaic virus (TMV) particles. We employed a low pH (similar to 7.5) copper electroless deposition solution that is compatible with biomolecules. The fabrication process of the nanowires is based on sensitization of tobacco mosaic virus with Pd(II) prior to the electroless deposition. We analyzed the chemical composition of the nanowires by energy-filtering transmission electron microscopy, and used the method also for nickel and cobalt nanowires deposited within the viral channel. (c) 2006 Elsevier Ltd. All rights reserved.