Establishing the Structural Integrity of Core-Shell Nanoparticles against Elemental Migration using Luminescent Lanthanide Probes

Angewandte Chemie
Bing ChenFeng Wang

Abstract

Core-shell structured nanoparticles are increasingly used to host luminescent lanthanide ions but the structural integrity of these nanoparticles still lacks sufficient understanding. Herein, we present a new approach to detect the diffusion of dopant ions in core-shell nanostructures using luminescent lanthanide probes whose emission profile and luminescence lifetime are sensitive to the chemical environment. We show that dopant ions in solution-synthesized core-shell nanoparticles are firmly confined in the designed locations. However, annealing at certain temperatures (greater than circa 350 °C) promotes diffusion of the dopant ions and leads to degradation of the integrity of the nanoparticles. These insights into core-shell nanostructures should enhance our ability to understand and use lanthanide-doped luminescent nanoparticles.

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Citations

Dec 15, 2015·ACS Applied Materials & Interfaces·Shaohong GuoWei Huang
Jul 21, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Mir IrfanullahArindam Chowdhury
Oct 5, 2016·Nature Communications·Sanyang HanXiaogang Liu
Dec 28, 2018·Advanced Materials·Yangyang DuFeng Wang
Oct 1, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Tianying SunFeng Wang
May 21, 2018·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Bing ChenFeng Wang
Oct 27, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Daqin ChenPing Huang
Jul 27, 2021·Nano Letters·Ziqiang SunQiangbin Wang
Dec 13, 2017·Journal of the American Chemical Society·Hao DongChun-Hua Yan

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