Prevalence of Anisotropic Shell Growth in Rare Earth Core–Shell Upconversion Nanocrystals

ACS Nano ◽  
2013 ◽  
Vol 7 (5) ◽  
pp. 4393-4402 ◽  
Author(s):  
Chao Zhang ◽  
Jim Yang Lee
Keyword(s):  
Rare Earth ◽  
Shell Growth ◽  
Anisotropic Shell ◽  
Core Shell ◽  
Earth Core ◽  
Upconversion Nanocrystals

Facile synthesis of flower-shaped Au/GdVO4:Eu core/shell nanoparticles by using citrate as stabilizer and complexing agent

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 9612-9618 ◽  
Author(s):  
Ming Chen ◽  
Jia-Hong Wang ◽  
Zhi-Jun Luo ◽  
Zi-Qiang Cheng ◽  
Ya-Fang Zhang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Complexing Agent ◽  
Core Shell ◽  
Facile Synthesis ◽  
Shell Nanoparticles ◽  
Rare Earth Compound ◽  
Earth Core ◽  
Core Shell Nanoparticles

The synthesis of metal/rare-earth core/shell hetero-nanostructures through directly coating rare-earth compound onto the surface of Au nanocrystals.

scholarly journals Rapidly liver-clearable rare-earth core–shell nanoprobe for dual-modal breast cancer imaging in the second near-infrared window

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Zhuxin Wei ◽  
Guangxin Duan ◽  
Baoxing Huang ◽  
Shanshan Qiu ◽  
Dandan Zhou ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Rare Earth ◽  
In Vivo Imaging ◽  
Near Infrared ◽  
Preoperative Imaging ◽  
Core Shell ◽  
High Background ◽  
Earth Core

Abstract Background Fluorescence imaging as the beacon for optical navigation has wildly developed in preclinical studies due to its prominent advantages, including noninvasiveness and superior temporal resolution. However, the traditional optical methods based on ultraviolet (UV, 200–400 nm) and visible light (Vis, 400–650 nm) limited by their low penetration, signal-to-noise ratio, and high background auto-fluorescence interference. Therefore, the development of near-infrared-II (NIR-II 1000–1700 nm) nanoprobe attracted significant attentions toward in vivo imaging. Regrettably, most of the NIR-II fluorescence probes, especially for inorganic NPs, were hardly excreted from the reticuloendothelial system (RES), yielding the anonymous long-term circulatory safety issue. Results Here, we develop a facile strategy for the fabrication of Nd3+-doped rare-earth core–shell nanoparticles (Nd-RENPs), NaGdF4:5%Nd@NaLuF4, with strong emission in the NIR-II window. What’s more, the Nd-RENPs could be quickly eliminated from the hepatobiliary pathway, reducing the potential risk with the long-term retention in the RES. Further, the Nd-RENPs are successfully utilized for NIR-II in vivo imaging and magnetic resonance imaging (MRI) contrast agents, enabling the precise detection of breast cancer. Conclusions The rationally designed Nd-RENPs nanoprobes manifest rapid-clearance property revealing the potential application toward the noninvasive preoperative imaging of tumor lesions and real-time intra-operative supervision. Graphical abstract

Rare Earth Core/Shell Nanobarcodes for Multiplexed Trace Biodetection

2015 ◽  
Vol 87 (11) ◽  
pp. 5745-5752 ◽  
Author(s):  
Lei Chen ◽  
Xiaomin Li ◽  
Dengke Shen ◽  
Lei Zhou ◽  
Dan Zhu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Core Shell ◽  
Earth Core

scholarly journals Rational Designed Rapid Liver Clearance Rare-earth Core-shell Nanoprobe for Dual-Modal Breast Cancer Imaging in the Second Near-Infrared Window

2021 ◽  
Author(s):  
Zhuxin Wei ◽  
Guangxin Duan ◽  
Baoxing Huang ◽  
Shanshan Qiu ◽  
Dandan Zhou ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Rare Earth ◽  
Near Infrared ◽  
Mri Contrast Agents ◽  
Preoperative Imaging ◽  
Core Shell ◽  
High Background ◽  
Earth Core

Abstract BackgroundFluorescence imaging as the beacon for optical navigation has wildly developed in preclinical studies due to its prominent advantages, including noninvasiveness and superior temporal resolution. However, the traditional optical methods based on ultraviolet (UV, 200-400 nm) and visible light (Vis, 400-650 nm) limited by their low penetration, signal-to-noise ratio, and high background auto-fluorescence interference. Therefore, the development of near-infrared-II (NIR-II 1000-1700 nm) nanoprobe attracted significant attentions toward in vivo imaging. Regrettably, most of the NIR-II fluorescence probes, especially for inorganic NPs, were hardly excreted from the reticuloendothelial system (RES), yielding the anonymous long-term circulatory safety issue. ResultsHere, we develop a facile strategy for the fabrication of Nd3+-doped rare-earth core-shell nanoparticles (Nd-RENPs), NaGdF4:5%Nd@NaLuF4, with strong emission in the NIR-II window. What’s more, the Nd-RENPs could be quickly eliminated from the hepatobiliary pathway, reducing the potential risk with the long-term retention in the RES. Further, the Nd-RENPs are successfully utilized for NIR-II in vivo imaging and magnetic resonance imaging (MRI) contrast agents, enabling the precise detection of breast cancer. ConclusionsThe rational designed Nd-RENPs nanoprobes manifest rapid-clearance property revealing the potential application toward the noninvasive preoperative imaging of tumor lesions and real-time intra-operative supervision.

Phase-Dependent Shell Growth and Optical Properties of ZnSe/ZnS Core/Shell Nanorods

2021 ◽  
Author(s):  
Jiajia Ning ◽  
Yuan Xiong ◽  
Stephen V. Kershaw ◽  
Andrey L. Rogach
Keyword(s):  
Optical Properties ◽  
Shell Growth ◽  
Core Shell

Plasmonic Dual‐Enhancement and Precise Color Tuning of Gold Nanorod@SiO 2 Coupled Core–Shell–Shell Upconversion Nanocrystals

2017 ◽  
Vol 27 (36) ◽  
pp. 1701842 ◽  
Author(s):  
Fengwen Kang ◽  
Jijun He ◽  
Tianying Sun ◽  
Zhi Yong Bao ◽  
Feng Wang ◽  
...  
Keyword(s):  
Gold Nanorod ◽  
Core Shell ◽  
Color Tuning ◽  
Upconversion Nanocrystals

Synthesis and characterization of upconversion nanoparticles with shell structure and ligand-free hydrophilic modification

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83149-83154 ◽  
Author(s):  
Di Kang ◽  
Xiaoyan Song ◽  
Jinfeng Xing
Keyword(s):  
Rare Earth ◽  
Shell Structure ◽  
Synthesis And Characterization ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Hydrophilic Modification ◽  
Ligand Free ◽  
Core Shell Structure

Rare-earth upconversion nanoparticles (UCNPs) with α and β phases were prepared. UCNPs with core–shell structure were prepared and modified to be hydrophilic by ligand-free hydrophilic modification.

Hexagonal-phase NaREF4 upconversion nanocrystals: the matter of crystal structure

Nanoscale ◽  
2021 ◽  
Author(s):  
Rui Shi ◽  
Carlos D S Brites ◽  
Luis Antonio Dias Carlos
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Hexagonal Phase ◽  
Upconversion Nanocrystals ◽  
Luminescence Performance

The hexagonal-phase (β) of NaREF4 upconversion nanocrystals (RE = rare earth elements) has been widely employed because of the outstanding luminescence performance, yet less is known about the essence of...

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