Assembly of heterogeneous functional nanomaterials on DNA origami scaffolds.
Assembly of heterogeneous functional nanomaterials on DNA origami scaffolds.
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DOI：
10.1002/anie.201206389
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发表时间：
2012-11-05
影响因子：
16.6
通讯作者：
Wind, Shalom J.
中科院分区：
文献类型：
--
作者：
Wang, Risheng;Nuckolls, Colin;Wind, Shalom J.
近年来，包含不同功能组分的混合纳米材料系统已经开始受到显著关注。1-9这种多组分体系的目标主要是将其组分的官能度联合收割机，所述组分通常是金属纳米颗粒和半导体和/或磁性量子点（QD）。它们也可能显示出在同质系统中无法实现的涌现特性，这是组件之间特定相互作用的结果。迄今为止，已经采取了几种不同的方法来组装多组分系统，包括胶体组装，2，6，9热分解，1选择性生长4，9和DNA介导的组装，3，8包括形成3D超晶格。7 DNA独特的可编程性和多功能性使其对耦合异质纳米结构特别有吸引力。事实上，由双链DNA结合的Au纳米颗粒（AuNP）和QD的二元复合物已经显示出独特的光子和光电性质，其可以通过改变它们之间的DNA双链体接头的长度来调节。因此，基于DNA的组装为材料设计和新应用开辟了巨大的可能性。然而，迄今为止用于此目的的结合方案依赖于缺乏机械刚性的DNA双链体。此外，需要额外的步骤（例如，凝胶电泳）来管理颗粒之间的比率。随着异质性和颗粒数量的增加，这些问题将变得更加难以管理。
Hybrid nanomaterial systems comprising different functional components have begun to receive significant attention in recent years. 1–9 The goal of such multicomponent systems is primarily to combine the functionalities of their constituents, which are typically metallic nanoparticles and semiconducting and/or magnetic quantum dots (QDs). They may also display emergent properties that cannot be realized in homogeneous systems as a result of specific interactions between the components. To date, several different approaches have been taken to assemble multicomponent systems, including colloidal assembly, 2, 6, 9 thermal decomposition, 1 selective growth4, 9 and DNA-mediated assembly, 3, 8 including the formation of 3D superlattices. 7The distinctive programmability and versatility of DNA make it particularly attractive for coupling heterogeneous nanostructures. Indeed, binary complexes of Au nanoparticles (AuNPs) and QDs bound by double-stranded DNA have displayed unique photonic and optoelectronic properties that can be tuned by varying the length of the DNA duplex linker between them. 8, 10 Thus, DNA-based assembly opens up tremendous possibilities for material design and new applications. However, the binding schemes used to date for this purpose rely on DNA duplexes, which lack mechanically rigidity. Furthermore, additional steps (eg, gel electrophoresis) are required to manage the ratio between the particles. These issues will become even more difficult to manage with increasing heterogeneity and number of particles.
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影响因子：
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