Regioselective DNA modification and directed self-assembly of triangular gold nanoplates

Guoqing Wang, Yao Zhang, Xingguo Liang, Tohru Takarada, Mizuo Maeda

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

As a class of emerging nanoparticles, gold nanotriangles (AuNTs) are characterized by unique structural anisotropy and plasmonic properties. The organization of AuNTs into well-defined architecture potentially promises collective properties that are difficult to produce by individual AuNTs. To date, however, the orientation-controlled self-assembly of AuNTs has been achieved with limited success. Here, we describe an effective and straightforward approach to induce directed self-assembly of AuNTs. By taking advantage of the uneven chemical reactivity of AuNT surfaces, we implement regioselective modification of the edges and the top/bottom surfaces with two different double-stranded DNA (dsDNA) sequences. By means of terminal single base pairing/unpairing, controlled assembly of the dsDNA-modified AuNTs evolves in a face-to-face or edge-to-edge manner based on blunt-end stacking interaction on an intentional region of the AuNTs, along with entropic repulsion by unpaired terminal nucleobases on the other region. This approach could be useful for achieving directed self-assembly of other anisotropic nanoparticles.

元の言語英語
ジャーナルNanomaterials
9
発行部数4
DOI
出版物ステータス出版済み - 4 2019

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Gold
Self assembly
Nanoparticles
Chemical reactivity
Anisotropy
DNA

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)

これを引用

Regioselective DNA modification and directed self-assembly of triangular gold nanoplates. / Wang, Guoqing; Zhang, Yao; Liang, Xingguo; Takarada, Tohru; Maeda, Mizuo.

:: Nanomaterials, 巻 9, 番号 4, 04.2019.

研究成果: ジャーナルへの寄稿記事

Wang, Guoqing ; Zhang, Yao ; Liang, Xingguo ; Takarada, Tohru ; Maeda, Mizuo. / Regioselective DNA modification and directed self-assembly of triangular gold nanoplates. :: Nanomaterials. 2019 ; 巻 9, 番号 4.
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