DNA Origami Guided Self-Assembly of Plasmonic Polymers with Robust Long-Range Plasmonic Resonance
DNA Origami Guided Self-Assembly of Plasmonic Polymers with Robust Long-Range Plasmonic Resonance
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DOI：
10.1021/acs.nanolett.0c04055
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发表时间：
2020-12-09
期刊：
影响因子：
10.8
通讯作者：
Ke, Yonggang
中科院分区：
文献类型：
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作者：
Wang, Pengfei;Huh, Ji-Hyeok;Ke, Yonggang
由金属纳米颗粒(NPs)组成的等离子体聚合物能够将光压缩到深亚波长空间，并沿着高度受限的纳米路径进行远距离传输。DNA纳米技术，特别是受益于DNA折纸的分子可编程性，为构建具有设计者配置和纳米级间隙的等离子体纳米粒子聚合物提供了几乎不可能的平台。在这里，我们设计并组装了一种DNA折纸标签瓷砖，它能够聚合成具有高刚性的一维链。DNA折纸标签链被用作框架，使金属纳米粒子能够牢固、通用和精确地排列成微米长的手性和磁性等离子体聚合物，这些聚合物能够有效地在深亚波长尺度上传输等离子体角动量和磁性表面等离子体极化子。我们的工作为制备长的、直的和结构复杂的纳米粒子聚合物提供了一个分子平台，这些聚合物具有新兴的等离子体性质，吸引着各种领域的人们。
Plasmonic polymers consisting of metallic nanoparticles (NPs) are able to squeeze light into the deep-subwavelength space and transfer along a highly confined nanoscale path in long range. DNA nanotechnology, particularly benefiting from the molecular programmability of DNA origami, has provided otherwise nearly impossible platforms for constructing plasmonic nanoparticle polymers with designer configurations and nanoscale gaps. Here, we design and assemble a DNA origami hashtag tile that is able to polymerize into one-dimensional chains with high rigidity. The DNA origami hashtag chains are used as frames to enable robust, versatile, and precise arrangement of metallic NPs into micrometer-long chiral and magnetic plasmonic polymers, which are capable of efficiently transporting plasmonic angular momentum and magnetic surface plasmonic polaritons at the deep-subwavelength scale. Our work provides a molecular platform for the fabrication of long, straight, and structurally complex nanoparticle polymers with emerging plasmonic properties that are appealing to a variety of fields.