Organizing End-Site-Specific SWCNTs in Specific Loci Using DNA
Organizing End-Site-Specific SWCNTs in Specific Loci Using DNA
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DOI：
10.1021/jacs.9b03432
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发表时间：
2019-07-31
影响因子：
15
通讯作者：
Seeman, Nadrian C.
中科院分区：
文献类型：
--
作者：
Pei, Hao;Sha, Ruojie;Seeman, Nadrian C.
单壁碳纳米管(SWCNTs)在纳米电子学和光子学应用中具有许多理想的特性，包括优异的电学和光学性能以及机械稳定性。为了在自下而上的纳米技术方法中利用这些物种，必须能够将它们放置在较大框架内的精确绝对位置，而不干扰传导表面。虽然如何在DNA折纸上定向一到两个纳米管是众所周知的，但研究人员之前一直无法准确定位。在这里，我们报告了一种方法，将一条DNA链连接到SWCNT的反应端，然后使用该DNA链将纳米管放置在2D DNA折纸筏上的特定位置。我们证明了在这样的DNA折纸筏上放置一到两个纳米管是可能的。
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.