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Issue 42, 2018
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NaYbF4@CaF2 core–satellite upconversion nanoparticles: one-pot synthesis and sensitive detection of glutathione

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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–satellite UCNPs show larger surface-to-volume ratios and are suitable for further surface modifications. 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 the development of UCNP-based nanohybrids for biosensing, multimodal imaging and drug delivery.

Graphical abstract: NaYbF4@CaF2 core–satellite upconversion nanoparticles: one-pot synthesis and sensitive detection of glutathione

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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, 2018,10, 19898-19905
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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, 10, 19898
    DOI: 10.1039/C8NR05552A

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