Lanthanide-Doped Nanocrystals Serve as Single-Molecule Imaging Probes
نویسندگان
چکیده
منابع مشابه
Single-band upconversion emission in lanthanide-doped KMnF3 nanocrystals.
The preparation of upconversion (UC) nanocrystals that exhibit anti-Stokes emission is important for applications in fields as diverse as photonics, photovoltaics, biological imaging, and therapeutics. In particular, there has been an increasing focus on the synthesis of nanocrystals with tunable UC emission from ultraviolet to near-infrared through doping with lanthanide ions. However, the syn...
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Phosphorescent nanocrystals that upconvert near-infrared light to emit at higher energies in the visible have shown promise as photostable, nonblinking, and background-free probes for biological imaging. However, synthetic control over upconverting nanocrystal size has been difficult, particularly for the brightest system, Yb(3+)- and Er(3+)-doped β-phase NaYF(4), for which there have been no r...
متن کاملSynthesis and Applications of Lanthanide-Doped Nanocrystals
In recent years, Lanthanide (Ln3+)-doped nanocrystals have become promising alternatives to organic fluorophore because Ln3+ ions can exhibit unique luminescent properties, such as large anti-Stokes shifts, low auto fluorescence background, low toxicity and high penetration depth [1]. In terms of the mechanism of luminescence, luminescence of Ln3+ ions can be divided into down-conversion and up...
متن کاملLow temperature synthesis and characterization of lanthanide-doped BaTiO3 nanocrystals.
The vapor diffusion sol-gel (VDSG) method was employed for the room-temperature synthesis of ~10 nm, aliovalently doped 0.4, 0.8, and 1.6 mol% La:BaTiO3 and 0.4, 0.6, and 1.2 mol% Dy:BaTiO3 nanocrystals. Maximum ensemble relative permittivities of 176 and 208 were observed in the 0.8 mol% La:BaTiO3 and the 1.2 mol% Dy:BaTiO3 nanocrystals, respectively, relative to 89 for undoped BaTiO3 (at 1 MH...
متن کاملRecent advances in the chemistry of lanthanide-doped upconversion nanocrystals.
Lanthanide ions exhibit unique luminescent properties, including the ability to convert near infrared long-wavelength excitation radiation into shorter visible wavelengths through a process known as photon upconversion. In recent years lanthanide-doped upconversion nanocrystals have been developed as a new class of luminescent optical labels that have become promising alternatives to organic fl...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 2009
ISSN: 0883-7694,1938-1425
DOI: 10.1557/mrs2009.152