Dataset Information

Plasmonic Multi-Layered Built-in Hotspots Nanogaps for Effectively Activating Analytes.

ABSTRACT: Multi-layered plasmonic nanostructures are able to highly promote the near-field confinement and effectively activate analytes, which are of predominate significance but are extremely challenging. Herein, the semi-open Au core@carved AuAg multi-shell superstructure nanoparticles (multi-Au@Ag-Au NPs, multi = mono, bi, tri, tetra, and penta) are reported with a high designability on electromagnetic field and capability of effectively capturing analytes. By controlling synthetic parameters such as the number of galvanic exchange and Ag growth, multi-Au@Ag-Au NPs are successfully obtained, with tunable layer numbers and asymmetric nanoholes. Due to collective plasmon oscillations of multi-layered built-in nanogaps, the electromagnetic field strength of a single penta-Au@Ag-Au entity reach 48841. More importantly, the penta-Au@Ag-Au NPs show a remarkable light-harvesting capability, which is adaptive to different Raman lasers, supporting high-diversity detection. Additionally, the structural specificity allows analytes to be sufficiently captured into interior hotspots, and further achieve highly sensitive detection with limit of detection down to 3.22 × 10^-12 M. This study not only provides an effective pathway for integrating abundant hotspots and activating target molecules in single plasmonic superstructure, but stimulates advancements in SERS substrates for various applications.

SUBMITTER: Jiang L

PROVIDER: S-EPMC10870027 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature

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Plasmonic Multi-Layered Built-in Hotspots Nanogaps for Effectively Activating Analytes.

Jiang Lei L Wang Xiaoyuan X Zhou Jingyi J Fu Qianqian Q Lv Bihu B Sun Yixuan Y Song Liping L Huang Youju Y

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20231203 7

Multi-layered plasmonic nanostructures are able to highly promote the near-field confinement and effectively activate analytes, which are of predominate significance but are extremely challenging. Herein, the semi-open Au core@carved AuAg multi-shell superstructure nanoparticles (multi-Au@Ag-Au NPs, multi = mono, bi, tri, tetra, and penta) are reported with a high designability on electromagnetic field and capability of effectively capturing analytes. By controlling synthetic parameters such as ...[more]

PMID: 38044318

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Dataset Information

Plasmonic Multi-Layered Built-in Hotspots Nanogaps for Effectively Activating Analytes.

Publications

Plasmonic Multi-Layered Built-in Hotspots Nanogaps for Effectively Activating Analytes.

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