A simple approach for the synthesis of bifunctional Fe3O4@Gd2O3:Eu3+ core–shell nanocomposites

Peng, Hongxia; Cui, Bin; Li, Leilei; Wang, Yingsai

doi:10.1016/j.jallcom.2012.03.106

Cited by 32 publications

(5 citation statements)

References 45 publications

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“…For instance, a magnetic-luminescence bifunctional sensor was constructed via combining luminescent LaVO 4 :Eu 3+ nanocrystals with magnetic Fe 3 O 4 nanoparticles, 40 in addition, Fe 3 O 4 /ZnS:Mn equipped with these two properties was also obtained via the same method 41 and was proceeded with an improvement of the properties via Fe 3 O 4 @Gd 2 O 3 :Eu 3+ core-shell structure. 42 However, it is noteworthy that OM bifunctional materials without the separation between optical and magnetic phases would be of great value for devices in applications including high-accuracy communications, aircraft guidance, and magnetic field detection. 43,44 Thus, it gains much attention to prepare the bifunctional materials equipped with both NIR luminescence and magnetic properties in a single phase.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

Zhang

et al. 2015

J. Mater. Chem. C

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Monodisperse rice-like Ni 2+ -doped β-Ga 2 O 3 nanostructures were phase-controllably synthesized via hydrothermal route and subsequent calcination. The detailed phase, composition and morphology were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and high resolution transmission electron microscopy (HRTEM), which showed the rice-like β-Ga 2 O 3 nanostructures were assembled with nanorods with a diameter of ~50 nm along their entire length. The phase formation and transition behavior of β-Ga 2 O 3 nanocrystals were investigated, and a possible crystal growth mechanism of rice-like GaOOH nanostructure was proposed.Photoluminescence (PL) spectra indicated that Ni 2+ -doped β-Ga 2 O 3 phosphors exhibit a broadband near-infrared emission (1200~1600 nm). Besides, the magnetic property was also investigated, revealing the Ni 2+ -doped β-Ga 2 O 3 nanocrystals a ferromagnetic nature. The single phase Ni 2+ -doped β-Ga 2 O 3 nanocrystals endowed with optical and magnetic bifunctional properties have promising potential application in the fields of optical communication, biological diagnosis and magnetic information storage, etc. Graphical AbstractBroadband near-infrared emission (1200~1600 nm) and ferromagnetic properties was detected from single phase Ni 2+ -doped β-Ga 2 O 3 nanocrystals via mediated phase-controlled synthesis. The realization of optical-magnetic bifunctional nanocrystals is meaningful for the application in high-accuracy communications, bio-labels, etc.

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Section: Introductionmentioning

confidence: 99%

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

Zhang

et al. 2015

J. Mater. Chem. C

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“…It is worth noting that in the case of magnetic core directly contacting with T 1 CA, the magnetic field generated by a magnetic core can perturb the relaxation process of the paramagnetic T 1 CA, which can cause the decrease in T 1 contrast ability. − Therefore, gadolinium ions need to be separated from the magnetic core to reduce this disturbance. So far, the format combining gadolinium-species and magnetic core into one nanosystem mainly included gadolinium-grafted, ,, coated, or doped Fe 3 O 4 , ,,,− and gadolinium-grafted or coated Fe 3 O 4 @SiO 2 , ,, etc . However, these formulations encountered different problems ( i .…”

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confidence: 99%

A pH-Responsive Yolk-Like Nanoplatform for Tumor Targeted Dual-Mode Magnetic Resonance Imaging and Chemotherapy

Sun

Du²,

Zhang³

et al. 2017

ACS Nano

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Incorporation of T and T contrast material in one nanosystem performing their respective MR contrast role and simultaneously serving as an efficient drug delivery system (DDS) has a significant potential application for clinical diagnosis and chemotherapy of cancer. However, inappropriate incorporation always encountered many issues, such as low contact area of T contrast material with water-proton, inappropriate distance between T contrast material and water molecule, and undesirable disturbance of T contrast material for T imaging. Those issues seriously limited the T or T contrast effect. In this work, we developed a yolk-like FeO@GdO nanoplatform functionalized by polyethylene glycol and folic acid (FA), which could efficiently exert their tumor targeted T-T dual-mode MR imaging and drug delivery role. First, this nanoplatform possessed a high longitudinal relaxation rate (r) (7.91 mM s) and a stronger transverse relaxation rate (r) (386.5 mM s) than that of original FeO (268.1 mM s). Second, cisplatin could be efficiently loaded into this nanoplatform (112 mg/g) and showed pH-responsive release behavior. Third, this nanoplatform could be effectively internalized by HeLa cells with time and dosage dependence. Fourth, the FA receptor-mediated nanoplatform displayed excellent T-T dual mode MR contrast enhancement and anticancer activity both in vitro and in vivo. Fifth, no apparent toxicity for vital organs was observed with systemic delivery of the nanoplatform in vivo. Thus, this nanoplatform could be a potential nanotheranostic for tumor targeted T-T dual-mode MR imaging and chemotherapy.

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“…According to Fig. 2 , the major diffraction peaks were consistent with the diffraction peaks of pure Fe 3 O 4 and Gd 2 O 3 [ 23 , 30 ], confirming that the FGDA nanocubes were constituted by uniformly distributed Fe 3 O 4 /Gd 2 O 3 composites.…”

Section: Resultsmentioning

confidence: 62%

Uniform Fe₃O₄/Gd₂O₃-DHCA nanocubes for dual-mode magnetic resonance imaging

Miao

Peng

et al. 2020

Beilstein J. Nanotechnol.

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The multimodal magnetic resonance imaging (MRI) technique has been extensively studied over the past few years since it offers complementary information that can increase diagnostic accuracy. Simple methods to synthesize contrast agents are necessary for the development of multimodal MRI. Herein, uniformly distributed Fe3O4/Gd2O3 nanocubes for T 1–T 2 dual-mode MRI contrast agents were successfully designed and synthesized. In order to increase hydrophilicity and biocompatibility, the nanocubes were coated with nontoxic 3,4-dihydroxyhydrocinnamic acid (DHCA). The results show that iron (Fe) and gadolinium (Gd) were homogeneously distributed throughout the Fe3O4/Gd2O3-DHCA (FGDA) nanocubes. Relaxation time analysis was performed on the images obtained from the 3.0 T scanner. The results demonstrated that r 1 and r 2 maximum values were 67.57 ± 6.2 and 24.2 ± 1.46 mM−1·s−1, respectively. In vivo T 1- and T 2-weighted images showed that FGDA nanocubes act as a dual-mode contrast agent enhancing MRI quality. Overall, these experimental results suggest that the FGDA nanocubes are interesting tools that can be used to increase MRI quality, enabling accurate clinical diagnostics.

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A simple approach for the synthesis of bifunctional Fe3O4@Gd2O3:Eu3+ core–shell nanocomposites

Cited by 32 publications

References 45 publications

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

A pH-Responsive Yolk-Like Nanoplatform for Tumor Targeted Dual-Mode Magnetic Resonance Imaging and Chemotherapy

Uniform Fe₃O₄/Gd₂O₃-DHCA nanocubes for dual-mode magnetic resonance imaging

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A simple approach for the synthesis of bifunctional Fe3O4@Gd2O3:Eu3+ core–shell nanocomposites

Cited by 32 publications

References 45 publications

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni2+-doped β-Ga2O3 nanocrystals via mediated phase-controlled synthesis

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni2+-doped β-Ga2O3 nanocrystals via mediated phase-controlled synthesis

A pH-Responsive Yolk-Like Nanoplatform for Tumor Targeted Dual-Mode Magnetic Resonance Imaging and Chemotherapy

Uniform Fe3O4/Gd2O3-DHCA nanocubes for dual-mode magnetic resonance imaging

Contact Info

Product

Resources

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Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

Simultaneous broadband near-infrared emission and magnetic properties of single phase Ni²⁺-doped β-Ga₂O₃ nanocrystals via mediated phase-controlled synthesis

Uniform Fe₃O₄/Gd₂O₃-DHCA nanocubes for dual-mode magnetic resonance imaging