journal article·2022

Mass-determining role in the electrophoretic separation of colloidal plasmonic nanoparticle oligomers

An Cao, Jingyi Tan, Dilong Liu, Zhiming Chen, Liguang Dou, Zhiqiang Liu, Yue Li

Nanoscale· Volume 14· Issue 38
Publisher page

Abstract

Gel electrophoresis techniques have been commonly applied in sieving plasmonic nanoparticle oligomers, while the intrinsic role in determining their phoresis velocity differences through the gel remains debatable. In this work, we explore the components and yield in each gel band after bundling two rationally designed types of nanoparticles in a system for electrophoretic separation. All results indicate that the mass property of plasmonic oligomers plays an essential role in determining their phoresis velocity divergences during separation. Further theoretical simulations reveal that the grounds for the mass-determining role stemmed from the random inelastic collisions among the oligomers and the gel-network microchannel. Moreover, under the guidance of such a mass-determining role, it is easy to achieve the direct electrophoretic separation of hetero-structured plasmonic dimers with high purity and high yield. This work will not only facilitate the precise nano-engineering of complex plasmonic oligomers with unique optical properties, but also might remove the obstacles toward their industrial manufacture with high purity.
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Research context

OpenAlex topics: Minerals Flotation and Separation Techniques · Field-Flow Fractionation Techniques · Iron oxide chemistry and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, P. R. China

University of Science and Technology of China, Hefei 230026, P. R. China

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China

University of Chinese Academy of Sciences, Beijing 100049, P.R. China

Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China

Funding

National Science Fund for Distinguished Young Scholars · National Natural Science Foundation of China · National Key Research and Development Program of China · Youth Innovation Promotion Association of the Chinese Academy of Sciences · Hefei Institutes of Physical Science, Chinese Academy of Sciences

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