Self-Assembly of Shaped Nanoparticles into Free-Standing 2D and 3D Superlattices.
Self-Assembly of Shaped Nanoparticles into Free-Standing 2D and 3D Superlattices.
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DOI：
10.1002/smll.201502768
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发表时间：
2016
期刊：
影响因子：
13.3
通讯作者：
Weikun Li;Ke Wang;Peng Zhang;Jie He;Shaoyi Xu;Yonggui Liao;Jintao Zhu;Xiaolin Xie;Z. Nie
中科院分区：
文献类型：
--
作者：
Weikun Li;Ke Wang;Peng Zhang;Jie He;Shaoyi Xu;Yonggui Liao;Jintao Zhu;Xiaolin Xie;Z. Nie
本文描述了一种新颖的超分子组装介导策略，用于将不同形状（例如球体、棒状和立方体）的金纳米颗粒 (NP) 组织成大面积、独立的 2D 和 3D 超晶格。这种稳健的方法涉及两个主要步骤：（i）在超分子梳状嵌段共聚物（CBCP）组件内组织聚合物束缚的纳米粒子，以及（ii）拆卸组装的CBCP结构以产生独立的纳米粒子超晶格。结果表明，超晶格的晶体结构和晶格常数可以通过改变束缚聚合物的分子量、纳米粒子的体积分数和 CBCP 的基质来轻松定制。这种无模板方法可能为将纳米粒子组装成具有广泛潜在应用的 2D 和 3D 结构开辟一条新途径。
This article describes a novel supramolecular assembly-mediated strategy for the organization of Au nanoparticles (NPs) with different shapes (e.g., spheres, rods, and cubes) into large-area, free-standing 2D and 3D superlattices. This robust approach involves two major steps: (i) the organization of polymer-tethered NPs within the assemblies of supramolecular comblike block copolymers (CBCPs), and (ii) the disassembly of the assembled CBCP structures to produce free-standing NP superlattices. It is demonstrated that the crystal structures and lattice constants of the superlattices can be readily tailored by varying the molecular weight of tethered polymers, the volume fraction of NPs, and the matrix of CBCPs. This template-free approach may open a new avenue for the assembly of NPs into 2D and 3D structures with a wide range of potential applications.