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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Self-assembly of individual polymer chain-metal nanoparticles for polymer cargo nanocomposites with tunable properties
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Self-assembly of individual polymer chain-metal nanoparticles for polymer cargo nanocomposites with tunable properties

机译：具有可调性质的聚合物货物纳米复合材料的单个聚合物链金属纳米颗粒的自组装

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摘要

We report a simple synthetic method and the unique properties of four types of individual NPs that are well-dispersed in polyelectrolyte complexes (PECs) from the core to the shell without the formation of alloy or core-shell NPs. Additionally, this result cannot be achieved by conventional methods. By mixing and heating PEs with metal precursors, individual metal NPs stabilized by PEs were synthesized. The four types of individual metal NP-containing PECs were prepared by mixing anionic and cationic PEs involving individual metal NPs. The individual metal NPs were homogeneously distributed within the polymer particles, and their contents were easily tuned by varying the loading fractions of the individual metal NP-containing PEs. The as-obtained PEC-Au/Pt/Ag/Pd (separate entities) exhibited promising performance for surface enhanced Raman scattering (SERS) and catalytic activities, which was further enhanced when the four types of metals demonstrated different optimal composition in comparison to the mixed types, such as the alloy or core-shell NPs. Our results also show that it is necessary to tune the types or individual metal contents of the multi-metallic complexes (individual, alloy, or core-shell) for the control or application of certain properties.
机译：我们报告了一种简单的合成方法和四种类型的单个NP的独特特性，这些NP很好地分散在从核到壳的聚电解质复合物（PEC）中，而没有形成合金或核-壳NP。另外，该结果不能通过常规方法获得。通过将PE与金属前体混合并加热，可以合成被PE稳定的单个金属NP。通过混合涉及单个金属NP的阴离子和阳离子PE来制备四种类型的单个包含金属NP的PEC。各个金属NP均匀地分布在聚合物颗粒中，并且通过改变各个含金属NP的PE的负载分数，可以轻松调整其含量。如此获得的PEC-Au / Pt / Ag / Pd（独立实体）在表面增强拉曼散射（SERS）和催化活性方面显示出令人鼓舞的性能，当四种类型的金属表现出与最佳金属不同的最佳组成时，这种性能将进一步增强。混合类型，例如合金或核壳NP。我们的结果还表明，有必要对多金属配合物（单个，合金或核壳）的类型或单个金属含量进行调节，以控制或应用某些特性。

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