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NaYbF4@CaF2 Core–Satellite Upconversion Nanoparticles: One-Pot Synthesis and Sensitive Detection of Glutathione

Abstract

A new class of core–satellite upconversion nanoparticles (UCNPs) formed through a kinetically controlled oriented attachment is presented. The core–satellite UCNPs comprising an optically active α-NaYbF4 core and several CaF2 satellites are synthesized by a one-pot sequential injection technique. Compared to conventional core–shell UCNPs, these core–satellites UCNPs show larger surface-to-volume ratio and are suitable for further surface modification. As a proof-of-concept, a biosensing system is constructed by coating MnO2 nanosheets on the α-NaYbF4:Tm@CaF2 core–satellite UCNPs for high-sensitivity biothiol detection. These core–satellite UCNPs show great potential in development of UCNP-based nanohybrids for biosensing, multimodal imaging and drug delivery.

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Publication details

The article was received on 10 Jul 2018, accepted on 02 Oct 2018 and first published on 02 Oct 2018


Article type: Paper
DOI: 10.1039/C8NR05552A
Citation: Nanoscale, 2018, Accepted Manuscript
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    NaYbF4@CaF2 Core–Satellite Upconversion Nanoparticles: One-Pot Synthesis and Sensitive Detection of Glutathione

    B. Chen and F. Wang, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR05552A

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