Photoswitchable Upconversion Luminescence of Rare-Earth Nanophosphors with Covalently Grafted Spiropyran

One-dimensional nanosized phosphors demonstrate special structural and photoluminescence properties, which have application potential in some optical fields. In this article, we present our recent progress on preparation and luminescence properties of some one-dimensional rare earth compounds and complexes, the core–shell oxide nanowires prepared by a two-step hydrothermal route, the nanowires of some inorganic compounds doped with rare earths and rare earth complexes/PVP composites prepared by the electrospinning method, and the rare earth complexes in the SBA-15 mesoporous molecule sieves. In these systems, some novel or improved photoluminescence properties are observed such as improved luminescence quantum yield, thermal stability and/or photostability, and depressed thermal effect in upconversion luminescence.

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Recent progress on upconversion luminescence enhancement in rare-earth doped transparent glass-ceramics

Journal of Rare Earths ◽

10.1016/s1002-0721(16)60034-0 ◽

2016 ◽

Vol 34 (4) ◽

pp. 341-367 ◽

Cited By ~ 30

Author(s):

Jianbei QIU ◽

Qing JIAO ◽

Dacheng ZHOU ◽

Zhengwen YANG

Keyword(s):

Rare Earth ◽

Recent Progress ◽

Upconversion Luminescence ◽

Glass Ceramics ◽

Luminescence Enhancement ◽

Transparent Glass ◽

Rare Earth Doped

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Improved Upconversion Luminescence in Water-Soluble Yb3+/Er3+ Codoped LaF3 Nanoparticles Through Ca2+ Doping

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2016.11824 ◽

2016 ◽

Vol 16 (4) ◽

pp. 3883-3885 ◽

Cited By ~ 2

Author(s):

Shihu Liu ◽

Peng Zhang ◽

Daguang Li ◽

Min Lan ◽

Zhe Wang ◽

...

Keyword(s):

Rare Earth ◽

Luminescence Intensity ◽

Upconversion Luminescence ◽

Environmentally Friendly ◽

Polyol Process ◽

Rare Earth Ions ◽

Water Soluble

Monodisperse water-soluble LaF3: Yb3+/Er3+ nanocrystals (NCs) have been successfully fabricated via a fast, facile, and environmentally-friendly polyol process with polyvinylpyrrolidone (PVP) as an amphiphilic surfactant. The obtained NCs with a small size of 18 nm can be well dispersed in hydrophilic solutions. Meanwhile, their upconversion (UC) luminescence intensity was increased through Ca2+ doping due to the decrease of symmetry around rare earth ions.

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Hydrothermal Synthesis ofβ-NaYF4:Yb, Er Nanocrystals with Upconversion Fluorescence Using Tetraethylene Pentamine as Chelating Ligand

Journal of Nanomaterials ◽

10.1155/2012/369605 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Suli Wu ◽

Yanhui Ning ◽

Shufen Zhang

Keyword(s):

Rare Earth ◽

Reaction Time ◽

Upconversion Luminescence ◽

Solvent Composition ◽

Luminescence Spectroscopy ◽

X Ray Diffraction ◽

X Ray ◽

Chelating Ligand ◽

Amine Groups ◽

Tetraethylene Pentamine

Novel chelating ligands are very significant for preparing nanocrystals with different morphologies and applications. In this paper, we directly introduced amine groups onto UCNPs by choosing a new chelating ligand tetraethylene pentamine (TEPA) to synthesisNaYF4:Yb, Er through hydrothermal method. The influences of rare earth concentration, the ratio of RE/TEPA, solvent composition, and reaction time on the morphology and fluorescence intensity of the as-preparedNaYF4:Yb, Er samples were systematically investigated and discussed. Field emission scanning electron microscopy (FE-SEM), powder X-ray diffraction (XRD), and upconversion luminescence spectroscopy were used to characterize the product. It was found that rare earth concentration, ratio of RE/TEPA, solvent composition, and reaction time were all responsible for the luminescent intensity and morphology.

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Color-tunable and single-band red upconversion luminescence from rare-earth doped Vernier phase ytterbium oxyfluoride nanoparticles

Journal of Materials Chemistry C ◽

10.1039/c5tc02577j ◽

2016 ◽

Vol 4 (4) ◽

pp. 684-690 ◽

Cited By ~ 30

Author(s):

Ting Wen ◽

Yannan Zhou ◽

Yanzhen Guo ◽

Chunmei Zhao ◽

Baocheng Yang ◽

...

Keyword(s):

Rare Earth ◽

Low Temperature ◽

Upconversion Luminescence ◽

Single Band ◽

Color Tunable ◽

Rare Earth Doped

Vernier phase YbOF nanoparticles fabricated via a low temperature fluorination route show color-tunable and single-band red upconversion luminescence.

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