Journal ArticleDOI
Rare earth fluoride nano-/microcrystals: synthesis, surface modification and application
Chunxia Li,Jun Lin +1 more
TLDR
In this article, the authors highlight the recent advances on the chemical synthesis, surface modification and applications of rare earth fluoride nano-/microcrysals, with special emphasis on β-NaY(Gd)F4, F4, Yb3, Er3+ upconversion nanopaticles (UCNPs).Abstract:
This feature article highlights the recent advances on the chemical synthesis, surface modification and applications of rare earth fluoride nano-/microcrysals. In the past decade, great progress in the size and shape control of rare earth fluoride nano-/microcrystals has been made by developing solution phase-based methods such as thermal decomposition, hydro(solvo)thermal reaction, hydrothermal in situ conversion route, and ionic liquids-based synthesis. The main challenge of fluoride nanocrystals for biological applications is that it is hard to obtain ideal nanocrystals with smaller size (sub-50 nm), higher luminescence yield, better dispersity and stability in aqueous solvents, and superior biocompatibility. In order to overcome these shortcomings, a series of strategies of surface modification have been outlined in this review. Finally, we introduce the application of rare earth fluorides, with special emphasis on β-NaY(Gd)F4 : Yb3+, Er3+ upconversion nanopaticles (UCNPs) in biomedical applications including biological labels, multimodal bioimaging, photodynamic therapy and drug delivery.read more
Citations
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Journal ArticleDOI
Luminescent Functional Metal–Organic Frameworks
Journal ArticleDOI
Upconversion Nanoparticles: Design, Nanochemistry, and Applications in Theranostics
TL;DR: Applications in Theranostics Guanying Chen,*,†,‡ Hailong Qiu,*,‡ and Xiaoyuan Chen.
Journal ArticleDOI
Upconversion luminescent materials: advances and applications.
Journal ArticleDOI
Tuning upconversion through energy migration in core–shell nanoparticles
Feng Wang,Renren Deng,Juan Wang,Qingxiao Wang,Yu Han,Haomiao Zhu,Xueyuan Chen,Xiaogang Liu,Xiaogang Liu +8 more
TL;DR: By rational design of a core-shell structure with a set of lanthanide ions incorporated into separated layers at precisely defined concentrations, efficient upconversion emission can be realized through gadolinium sublattice-mediated energy migration for a wide range of Lanthanide activators without long-lived intermediary energy states.
Journal ArticleDOI
Upconversion nanophosphors for small-animal imaging
Jing Zhou,Zhuang Liu,Fuyou Li +2 more
TL;DR: In this critical review, recent reports regarding the synthesis of water-soluble UCNPs and their surface modification and bioconjugation chemistry are summarized and the applications ofUCNPs for small-animal imaging, including tumor-targeted imaging, lymphatic imaging, vascular imaging and cell tracking are reviewed in detail.
References
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Journal ArticleDOI
Chemistry and properties of nanocrystals of different shapes.
TL;DR: The interest in nanoscale materials stems from the fact that new properties are acquired at this length scale and, equally important, that these properties are equally important.
Journal ArticleDOI
Magnetic nanoparticles: Synthesis, protection, functionalization, and application
TL;DR: This review focuses on the synthesis, protection, functionalization, and application of magnetic nanoparticles, as well as the magnetic properties of nanostructured systems.
Journal ArticleDOI
Photodynamic therapy for cancer
TL;DR: PDT is being tested in the clinic for use in oncology — to treat cancers of the head and neck, brain, lung, pancreas, intraperitoneal cavity, breast, prostate and skin.
Journal ArticleDOI
Upconversion and Anti-Stokes Processes with f and d Ions in Solids
TL;DR: Before the 1960s, all anti-Stokes emissions, which were known to exist, involved emission energies in excess of excitation energies by only a few kT and were linked to thermal population of energy states above excitation states by such an energy amount.
Journal ArticleDOI
Probing the Cytotoxicity Of Semiconductor Quantum Dots.
TL;DR: This work found that CdSe-core QDs were indeed acutely toxic under certain conditions and modulated by processing parameters during synthesis, exposure to ultraviolet light, and surface coatings, and suggests that cytotoxicity correlates with the liberation of free Cd2+ ions due to deterioration of the Cd Se lattice.
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