Skip to Main content Skip to Navigation
Journal articles

A facile method for the preparation of bifunctional Mn:ZnS/ZnS/Fe3O4 magnetic and fluorescent nanocrystals

Abstract : Bifunctional magnetic and fluorescent core/shell/shell Mn:ZnS/ZnS/Fe3O4 nanocrystals were synthesized in a basic aqueous solution using 3-mercaptopropionic acid (MPA) as a capping ligand. The structural and optical properties of the heterostructures were characterized by X-ray diffraction (XRD), dynamic light scattering (DLS), transmission electron microscopy (TEM), UV-vis spectroscopy and photoluminescence (PL) spectroscopy. The PL spectra of Mn: ZnS/ZnS/Fe3O4 quantum dots (QDs) showed marked visible emission around 584 nm related to the T-4(1) -> (6)A(1) Mn2+ transition. The PL quantum yield (QY) and the remnant magnetization can be regulated by varying the thickness of the magnetic shell. The results showed that an increase in the thickness of the Fe3O4 magnetite layer around the Mn:ZnS/ZnS core reduced the PL QY but improved the magnetic properties of the composites. Nevertheless, a good compromise was achieved in order to maintain the dual modality of the nanocrystals, which may be promising candidates for various biological applications.
Document type :
Journal articles
Complete list of metadatas

Cited literature [15 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/hal-01266911
Contributor : Lrgp Ul <>
Submitted on : Thursday, December 8, 2016 - 4:03:48 PM
Last modification on : Friday, December 4, 2020 - 11:16:06 AM
Long-term archiving on: : Thursday, March 23, 2017 - 8:02:49 AM

File

2190-4286-6-178.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Houcine Labiadh, Tahar Ben Chaabane, Romain Sibille, Lavinia Balan, Raphaël Schneider. A facile method for the preparation of bifunctional Mn:ZnS/ZnS/Fe3O4 magnetic and fluorescent nanocrystals. Beilstein Journal of Nanotechnology, Karlsruhe Institute of Technology., 2015, 6, pp.1743-1751. ⟨10.3762/bjnano.6.178⟩. ⟨hal-01266911⟩

Share

Metrics

Record views

249

Files downloads

335