TY - JOUR
T1 - Fabrication of bifunctional core-shell Fe3O4 particles coated with ultrathin phosphor layer
AU - Atabaev, Timur Sh
AU - Kim, Hyung Kook
AU - Hwang, Yoon Hwae
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (grant no. 2012R1A1B3001357).
PY - 2013
Y1 - 2013
N2 - Bifunctional monodispersed Fe3O4 particles coated with an ultrathin Y2O3:Tb3+ shell layer were fabricated using a facile urea-based homogeneous precipitation method. The obtained composite particles were characterized by powder X-ray diffraction, transmission electron microscopy (TEM), quantum design vibrating sample magnetometry, and photoluminescence (PL) spectroscopy. TEM revealed uniform spherical core-shell-structured composites ranging in size from 306 to 330 nm with a shell thickness of approximately 25 nm. PL spectroscopy confirmed that the synthesized composites displayed a strong eye-visible green light emission. Magnetic measurements indicated that the composite particles obtained also exhibited strong superparamagnetic behavior at room temperature. Therefore, the inner Fe3O4 core and outer Y2O3:Tb3+ shell layer endow the composites with both robust magnetic properties and strong eye-visible luminescent properties. These composite materials have potential use in magnetic targeting and bioseparation, simultaneously coupled with luminescent imaging.
AB - Bifunctional monodispersed Fe3O4 particles coated with an ultrathin Y2O3:Tb3+ shell layer were fabricated using a facile urea-based homogeneous precipitation method. The obtained composite particles were characterized by powder X-ray diffraction, transmission electron microscopy (TEM), quantum design vibrating sample magnetometry, and photoluminescence (PL) spectroscopy. TEM revealed uniform spherical core-shell-structured composites ranging in size from 306 to 330 nm with a shell thickness of approximately 25 nm. PL spectroscopy confirmed that the synthesized composites displayed a strong eye-visible green light emission. Magnetic measurements indicated that the composite particles obtained also exhibited strong superparamagnetic behavior at room temperature. Therefore, the inner Fe3O4 core and outer Y2O3:Tb3+ shell layer endow the composites with both robust magnetic properties and strong eye-visible luminescent properties. These composite materials have potential use in magnetic targeting and bioseparation, simultaneously coupled with luminescent imaging.
KW - Bifunctional composite particles
KW - Nanocomposites
KW - Superparamagnetic behavior
UR - http://www.scopus.com/inward/record.url?scp=84887299159&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887299159&partnerID=8YFLogxK
U2 - 10.1186/1556-276X-8-357
DO - 10.1186/1556-276X-8-357
M3 - Article
AN - SCOPUS:84887299159
VL - 8
SP - 1
EP - 6
JO - Nanoscale Research Letters
JF - Nanoscale Research Letters
SN - 1931-7573
IS - 1
M1 - 357
ER -