Acta Physica Sinica, Volume. 69, Issue 14, 147801-1(2020)

Hot injection synthesis of core-shell upconversion nanoparticles for bioimaging application

Bei Liu... Xi-Jian Lu, Xiao-Ning Liu, Yi-Pin Wu and Bin Zou* |Show fewer author(s)
Author Affiliations
  • School of Science, Minzu University of China, Beijing 100081, China
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    Figures & Tables(6)
    Schematic design of core-shell structured upconversion nanoparticles synthesized with the hot injection method.
    (a), (b) TEM images and (c) the corresponding size distribution of the of NaYF4: Yb, Tm.
    (a)−(d) The schematic core-shell structure, TEM images and size distribution of NaYF4:Yb, Tm@NaYF4 (about 43.8 nm); (e)−(h) the schematic core-shell structure, TEM images and size distribution of NaYF4:Yb, Tm@NaYF4 (about 63.2 nm); (i)−(l) the schematic core-shell structure, TEM images and size distribution of NaYF4:Yb, Tm@NaYF4 (about 80.8 nm); (m)−(p) the schematic core-shell structure, TEM images and size distribution of NaYF4:Yb, Tm@NaYF4 (about 100.7 nm).
    (a) The energy transfer mechanisms of NaYF4:Yb, Tm@NaYF4 UCNPs; (b) the upconversion luminescent spectra and (c) the relative luminescent intensity of core-shell structured UCNPs with different shell thicknesses.
    (a) Schematic structure of UCNP@PEG; (b) TEM image of UCNP@PEG; (c) cell viabilities of HeLa cells after incubation with various concentrations of UCNP@PEG
    Upconversion luminescent images of HeLa cells after culturing with UCNP@PEG for 0.5, 3.0 and 6.0 h.
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    Bei Liu, Xi-Jian Lu, Xiao-Ning Liu, Yi-Pin Wu, Bin Zou. Hot injection synthesis of core-shell upconversion nanoparticles for bioimaging application[J]. Acta Physica Sinica, 2020, 69(14): 147801-1

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    Paper Information

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    Received: Mar. 8, 2020

    Accepted: --

    Published Online: Dec. 28, 2020

    The Author Email:

    DOI:10.7498/aps.69.20200347

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