Upconversion nanoparticles(UC NPs)in combination with plasmonic materials have great potential for cancer photothermal therapy.Recently,sodium holmium fluoride(NaHoF4)is being investigated for luminescence and magneti...Upconversion nanoparticles(UC NPs)in combination with plasmonic materials have great potential for cancer photothermal therapy.Recently,sodium holmium fluoride(NaHoF4)is being investigated for luminescence and magnetic resonance imaging(MRI)contrast agent.Here,we present successful synthesis of excellent quality doped NaHoF4 NPs for possible UC luminescence application and coated for possible photothermal therapy application.Synthesized NaHoF4 nanocrystals were doped with Yb/Er and coated with gold,gold/silica,silver and polypyrrole(PPy).XRD,XPS and TEM were used to determine structure and morphology of the NPs.Strong UC photoluminescence(PL)emission spectra were obtained from the NPs when excited by near-infrared(NIR)light at 980 nm.Cell viability and toxicity of the NPs were characterized using pancreatic and ovarian cancer cells with results showing that gold/silica coating produced least toxicity followed by gold coating.展开更多
The authors did not realize that the presentations of some TEM images were incorrect.The versions of such figures and thecorresponding text should be changed as follows.
文摘Upconversion nanoparticles(UC NPs)in combination with plasmonic materials have great potential for cancer photothermal therapy.Recently,sodium holmium fluoride(NaHoF4)is being investigated for luminescence and magnetic resonance imaging(MRI)contrast agent.Here,we present successful synthesis of excellent quality doped NaHoF4 NPs for possible UC luminescence application and coated for possible photothermal therapy application.Synthesized NaHoF4 nanocrystals were doped with Yb/Er and coated with gold,gold/silica,silver and polypyrrole(PPy).XRD,XPS and TEM were used to determine structure and morphology of the NPs.Strong UC photoluminescence(PL)emission spectra were obtained from the NPs when excited by near-infrared(NIR)light at 980 nm.Cell viability and toxicity of the NPs were characterized using pancreatic and ovarian cancer cells with results showing that gold/silica coating produced least toxicity followed by gold coating.
文摘The authors did not realize that the presentations of some TEM images were incorrect.The versions of such figures and thecorresponding text should be changed as follows.
