A1 Refereed original research article in a scientific journal
Lanthanide-Doped Nanoparticles for Stimulated Emission Depletion Nanoscopy
Authors: Stefan Krause, Mikkel Baldtzer Liisberg, Satu Lahtinen, Tero Soukka, Tom Vosch
Publisher: AMER CHEMICAL SOC
Publication year: 2019
Journal: ACS Applied Nano Materials
Journal name in source: ACS APPLIED NANO MATERIALS
Journal acronym: ACS APPL NANO MATER
Volume: 2
Issue: 9
First page : 5817
Last page: 5823
Number of pages: 13
ISSN: 2574-0970
eISSN: 2574-0970
DOI: https://doi.org/10.1021/acsanm.9b01272
Abstract
Lanthanide-based photoluminescent emitters have gained strong attention over the past years because they provide certain advantages over organic fluorophores. Especially their excellent photostability has given rise to efforts in applying lanthanides for stimulated emission depletion (STED) nanoscopy. While STED has been demonstrated for dual lanthanide-based upconversion nanoparticles and single lanthanide ions embedded in yttrium aluminum garnet, a proof of the general lanthanide applicability for STED nanoscopy is still missing. Here we show that doping sodium yttrium fluoride (NaYF4) nanocrystals with either dysprosium or europium ions leads to working Stokes-side STED labels. The vast number of states inherent to most of the lanthanide ions should also allow the discovery of other lanthanides as potential Stokes-side STED labels in similar or alternative hosts.
Lanthanide-based photoluminescent emitters have gained strong attention over the past years because they provide certain advantages over organic fluorophores. Especially their excellent photostability has given rise to efforts in applying lanthanides for stimulated emission depletion (STED) nanoscopy. While STED has been demonstrated for dual lanthanide-based upconversion nanoparticles and single lanthanide ions embedded in yttrium aluminum garnet, a proof of the general lanthanide applicability for STED nanoscopy is still missing. Here we show that doping sodium yttrium fluoride (NaYF4) nanocrystals with either dysprosium or europium ions leads to working Stokes-side STED labels. The vast number of states inherent to most of the lanthanide ions should also allow the discovery of other lanthanides as potential Stokes-side STED labels in similar or alternative hosts.
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