Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecule Engineering , East China Normal University , Shanghai 200241 , P.R. China.
Department of Chemistry , New York University , 100 Washington Square East , New York , New York 10003 , United States.
J Am Chem Soc. 2019 Jul 31;141(30):11923-11928. doi: 10.1021/jacs.9b03432. Epub 2019 Jul 22.
Single-wall carbon nanotubes (SWCNTs) are known to embody many desirable features for nanoelectronic and photonic applications, including excellent electronic and optical properties and mechanical robustness. To utilize these species in a bottom-up nanotechnological approach, it is necessary to be able to place them in precise absolute positions within a larger framework, without disturbing the conduction surface. Although it is well-known how to orient one or two nanotubes on a DNA origami, precise placement has eluded investigators previously. Here, we report a method of attaching a strand of DNA on the reactive end of a SWCNT, and then of using that DNA strand to place the nanotube at a specific site on a 2D DNA origami raft. We demonstrate that it is possible to place one or two nanotubes on such a DNA origami raft.
单壁碳纳米管 (SWCNT) 被认为具有许多理想的特性，适用于纳米电子学和光子学应用，包括优异的电子和光学性能以及机械强度。为了在自下而上的纳米技术方法中利用这些物质，有必要能够在不干扰传导表面的情况下，将它们精确地放置在更大框架内的精确绝对位置。尽管人们已经知道如何在 DNA 折纸结构上定向一个或两个纳米管，但以前的研究人员一直未能实现精确放置。在这里，我们报告了一种在 SWCNT 的反应端附着一条 DNA 链的方法，然后使用该 DNA 链将纳米管放置在二维 DNA 折纸筏上的特定位置。我们证明了在这样的 DNA 折纸筏上放置一个或两个纳米管是可能的。
