Polyelemental nanoparticle libraries
Polyelemental nanoparticle libraries
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DOI：
10.1126/science.aaf8402
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发表时间：
2016-06-24
期刊：
影响因子：
56.9
通讯作者：
Mirkin, Chad A.
中科院分区：
文献类型：
--
作者：
Chen, Peng-Cheng;Liu, Xiaolong;Mirkin, Chad A.
多金属纳米粒子在许多领域都很有用，但目前还没有有效的策略来合成此类结构的文库，其中的结构可以以系统的和特定位置的方式进行探索。缺乏这些能力排除了全面探索这类系统的可能性。我们介绍了单个多元素粒子系统的系统研究，其中组成和尺寸可以独立控制，结构形成(合金与相分离状态)可以理解。我们通过聚合物纳米反应器介导法合成了由五种金属元素(金、银、钴、铜和镍)的每一种组合组成的文库。对导致纳米级合金形成和相分离的因素有了重要的见解，并开发了通往传统方法无法获得的纳米结构库的途径。
Multimetallic nanoparticles are useful in many fields, yet there are no effective strategies for synthesizing libraries of such structures, in which architectures can be explored in a systematic and site-specific manner. The absence of these capabilities precludes the possibility of comprehensively exploring such systems. We present systematic studies of individual polyelemental particle systems, in which composition and size can be independently controlled and structure formation (alloy versus phase-separated state) can be understood. We made libraries consisting of every combination of five metallic elements (Au, Ag, Co, Cu, and Ni) through polymer nanoreactor-mediated synthesis. Important insight into the factors that lead to alloy formation and phase segregation at the nanoscale were obtained, and routes to libraries of nanostructures that cannot be made by conventional methods were developed.