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Nano Research 2023, 16(7): 10690-10697 https://doi.org/10.1007/s12274-023-5732-9
Research Article | Issue | Published: 05 June 2023

Engineering the inter-island plasmonic coupling in homometallic Au–Aun core–satellite structures

Show Author's Information Xiaoying Wu1,§,  Xiaoli Tian1,§,  Zihe Jiang3,  Yun Wang1,  Tingting Jiang1,  Yuhua Feng1( ),  Zhenglong Zhang3( ),  Hongyu Chen2( )
Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
School of Science, Westlake University, Hangzhou 310024, China
School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China

§ Xiaoying Wu and Xiaoli Tian contributed equally to this work.

Keywords:
Au heterostructure, intraparticle coupling, strong ligand, core–satellite, localized surface plasmon resonance (LSPRs), near-infrared (NIR) absorptions
Topics:
Structural design
Cite this article:
Wu X, Tian X, Jiang Z, et al. Engineering the inter-island plasmonic coupling in homometallic Au–Aun core–satellite structures. Nano Research, 2023, 16(7): 10690-10697. https://doi.org/10.1007/s12274-023-5732-9
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Abstract Full text Electronic supplementary material About this article

We show that through strong ligand mediated interfacial energy control between Au seeds and the deposited Au, the non-wetting growth of Au on Au seeds led to the formation homometallic core–satellite nanostructures. To modulate the intraparticle plasmonic coupling between the core and the satellites, the number and size of the Au satellites, and their inter-island distances were continuously tuned by varying the growth kinetics. As a result of the precise structural control, the plasmonic absorptions of the core–satellite nanostructures were tuned from visible to near-infrared (NIR) spectral range, and the extent of spectral modulation (500–1300 nm) is among the best of the literature methods. This synthetic advance enriches the toolbox for nanosynthesis and points to a new direction in the exploration of sophisticated functional designs.


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Electronic supplementary material
About this article

Engineering the inter-island plasmonic coupling in homometallic Au–Aun core–satellite structures

Show Author's information Xiaoying Wu1,§, Xiaoli Tian1,§, Zihe Jiang3, Yun Wang1, Tingting Jiang1, Yuhua Feng1( ), Zhenglong Zhang3( ), Hongyu Chen2( )
Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
School of Science, Westlake University, Hangzhou 310024, China
School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China

§ Xiaoying Wu and Xiaoli Tian contributed equally to this work.

Abstract

We show that through strong ligand mediated interfacial energy control between Au seeds and the deposited Au, the non-wetting growth of Au on Au seeds led to the formation homometallic core–satellite nanostructures. To modulate the intraparticle plasmonic coupling between the core and the satellites, the number and size of the Au satellites, and their inter-island distances were continuously tuned by varying the growth kinetics. As a result of the precise structural control, the plasmonic absorptions of the core–satellite nanostructures were tuned from visible to near-infrared (NIR) spectral range, and the extent of spectral modulation (500–1300 nm) is among the best of the literature methods. This synthetic advance enriches the toolbox for nanosynthesis and points to a new direction in the exploration of sophisticated functional designs.

Keywords: Au heterostructure, intraparticle coupling, strong ligand, core–satellite, localized surface plasmon resonance (LSPRs), near-infrared (NIR) absorptions

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Publication history
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Acknowledgements

Publication history

Received: 10 February 2023
Revised: 03 April 2023
Accepted: 11 April 2023
Published: 05 June 2023
Issue date: July 2023

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

We gratefully acknowledge the financial support from the National Natural Science Foundation of China: General Program (No. 21673117, HC), Major Program (No. 91956109, HC), Zhejiang Provincial Natural Science Foundation of China: Major Program (No. 2022XHSJJ002, HC), Jiangsu Science and Technology Plan (No. BK20211258, YF), and Start-up Fund from Westlake University. We thank Westlake Center for Micro/Nano Fabrication for the facility support and technical assistance.

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