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Microfluidic Crystallization of Surfactant-Free Doped Zinc Sulfide Nanoparticles for Optical Bioimaging Applications

Tajoli, Francesca; Dengo, Nicola; Mognato, Maddalena; Dolcet, Paolo 1; Lucchini, Giacomo; Faresin, Andrea; Grunwaldt, Jan-Dierk ORCID iD icon 1; Huang, Xiaohui 2; Badocco, Denis; Maggini, Michele; Kübel, Christian ORCID iD icon 2; Speghini, Adolfo; Carofiglio, Tommaso; Gross, Silvia
1 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


The room-temperature controlled crystallization of monodispersed ZnS nanoparticles (average size of 5 nm) doped with luminescent ions (such as Mn$^{2+}$, Eu$^{3+}$, Sm$^{3+}$, Nd$^{3+}$, and Yb$^{3+}$) was achieved via a microfluidic approach. The preparation did not require any stabilizing ligands or surfactants, minimizing potential sources of impurities. The synthesized nanomaterials were characterized from a structural (XRD and XAS at lanthanide L$_{3}$ edges), morphological (TEM), and compositional (XPS, ICP-MS) perspective, giving complementary information on the materials’ features. In view of potential applications in the field of optical bioimaging, the optical emission properties of the doped nanoparticles were assessed, and samples showed strong luminescent properties while being less affected by self-quenching mechanisms. Furthermore, in vitro cytotoxicity experiments were conducted, showing no negative effects and evidencing the appeal of the synthesized materials for potential applications in the field of optical bioimaging.

Postprint §
DOI: 10.5445/IR/1000127974
Veröffentlicht am 06.12.2022
DOI: 10.1021/acsami.0c13150
Zitationen: 13
Web of Science
Zitationen: 11
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2020
Sprache Englisch
Identifikator ISSN: 1944-8244, 1944-8252
KITopen-ID: 1000127974
HGF-Programm 43.22.02 (POF III, LK 01) Nanocatalysis
Erschienen in ACS applied materials & interfaces
Verlag American Chemical Society (ACS)
Band 12
Heft 39
Seiten 44074–44087
Vorab online veröffentlicht am 02.09.2020
Schlagwörter 2020-024-029424 , TEM
Nachgewiesen in Scopus
Web of Science
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