Dynamically Interchangeable Nanoparticle Superlattices Through the Use of Nucleic Acid-Based Allosteric Effectors
Dynamically Interchangeable Nanoparticle Superlattices Through the Use of Nucleic Acid-Based Allosteric Effectors
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DOI：
10.1021/ja405988r
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发表时间：
2013-07-17
影响因子：
15
通讯作者：
Mirkin, Chad A.
中科院分区：
文献类型：
--
作者：
Kim, Youngeun;Macfarlane, Robert J.;Mirkin, Chad A.
DNA是一种可编程组装胶体晶体的强大工具，并已被用于生成具有综合可调晶格参数和晶体对称性的纳米粒子超晶格。然而，这些超晶格结构中的大多数一旦构建就保持静态，并且诸如粒子间距离的因素不能以容易和快速的方式控制。将这些材料结合到功能器件中将大大受益于在晶格合成后改变晶体组装的各个方面的能力。在此，我们提出了一个可逆的，快速的，和化学计量的对飞操纵纳米粒子超晶格与变构效应的基础上DNA。这种方法适用于多种不同的晶体对称性，包括FCC，BCC，CsCl和AlB2。
DNA is a powerful tool for programmably assembling colloidal crystals, and has been used to generate nanoparticle superlattices with synthetically adjustable lattice parameters and crystal symmetries. However, the majority of these superlattice structures remain static once constructed, and factors such as interparticle distance cannot be controlled in a facile and rapid manner. Incorporation of these materials into functional devices would be greatly benefitted by the ability to change various aspects of the crystal assembly after the lattice has been synthesized. Herein, we present a reversible, rapid, and stoichiometric on-the-fly manipulation of nanopartide superlattices with allosteric effectors based upon DNA. This approach is applicable to multiple different crystal symmetries, including FCC, BCC, CsCl, and AlB2.