Multicolor upconversion NaLuF<sub>4</sub> fluorescent nanoprobe for plant cell imaging and detection of sodium fluorescein

Chen, Zenghui; Wu, Xiaofeng; Hu, Shigang; Hu, Pan; Yan, Huanyuan; Tang, Zhijun; Liu, Yunxin

doi:10.1039/c4tc01766h

Cited by 46 publications

(28 citation statements)

References 39 publications

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“…NaLuF 4 -based UCNCs have been demonstrated to exhibit bright upconversion luminescence (UCL) [17,18,19,20,21,22,23,24] and show efficient five- and four-photon ultraviolet emissions under continuous wave excitation at 980 nm [25,26,27]. Despite recent success in synthesizing NaLuF 4 nanoplates or nanorods with size over ~30 nm using thermal decomposition method [28,29,30,31] or hydrothermal method [32,33,34,35,36,37,38], the ability to prepare uniform single crystal phase sub-10 nm NaLuF 4 UCNCs remains elusive.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Hao

Yang

et al. 2017

Nanomaterials

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The ability to synthesize high-quality hierarchical core/shell nanocrystals from an efficient host lattice is important to realize efficacious photon upconversion for applications ranging from bioimaging to solar cells. Here, we describe a strategy to fabricate multicolor core @ shell α-NaLuF4:Yb3+/Ln3+@CaF2 (Ln = Er, Ho, Tm) upconversion nanocrystals (UCNCs) based on the newly established host lattice of sodium lutetium fluoride (NaLuF4). We exploited the liquid-solid-solution method to synthesize the NaLuF4 core of pure cubic phase and the thermal decomposition approach to expitaxially grow the calcium fluoride (CaF2) shell onto the core UCNCs, yielding cubic core/shell nanocrystals with a size of 15.6 ± 1.2 nm (the core ~9 ± 0.9 nm, the shell ~3.3 ± 0.3 nm). We showed that those core/shell UCNCs could emit activator-defined multicolor emissions up to about 772 times more efficient than the core nanocrystals due to effective suppression of surface-related quenching effects. Our results provide a new paradigm on heterogeneous core/shell structure for enhanced multicolor upconversion photoluminescence from colloidal nanocrystals.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Hao

Yang

et al. 2017

Nanomaterials

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“…The appropriate functionalization of the NP surface and the introduction of targeting molecules such as folic acid, some peptides, specific antibodies and growth factors permits in some cases a cellular targeting imaging [263][264][265]. In vivo luminescent bioimaging of bacteria [266,267], small animals (mostly mice) [268,269] and plants [262,270] with UCNPs has also been widely reported in the literature. Different processes of biomedical interest can be also studied in vivo by using UCNPs, as it is the case of the biodistribution of the NPs [271] and targeting [272][273][274][275].…”

Section: Upconverting Nanophosphors For Luminescent Bioimagingmentioning

confidence: 99%

“…Thus, UCNPs, in many cases based on the NaREF 4 , often silica-coated, have been used to in vitro image cells [260][261][262]. The appropriate functionalization of the NP surface and the introduction of targeting molecules such as folic acid, some peptides, specific antibodies and growth factors permits in some cases a cellular targeting imaging [263][264][265].…”

Section: Upconverting Nanophosphors For Luminescent Bioimagingmentioning

confidence: 99%

Rare earth based nanostructured materials: synthesis, functionalization, properties and bioimaging and biosensing applications

et al. 2017

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Abstract:Rare earth based nanostructures constitute a type of functional materials widely used and studied in the recent literature. The purpose of this review is to provide a general and comprehensive overview of the current state of the art, with special focus on the commonly employed synthesis methods and functionalization strategies of rare earth based nanoparticles and on their different bioimaging and biosensing applications. The luminescent (including downconversion, upconversion and permanent luminescence) and magnetic properties of rare earth based nanoparticles, as well as their ability to absorb X-rays, will also be explained and connected with their luminescent, magnetic resonance and X-ray computed tomography bioimaging applications, respectively. This review is not only restricted to nanoparticles, and recent advances reported for in other nanostructures containing rare earths, such as metal organic frameworks and lanthanide complexes conjugated with biological structures, will also be commented on.

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“…1 Inorganic up-conversion materials have attracted attention due to their wide applications, including special three-dimension displays [2][3][4][5] and biology labels. 1 Inorganic up-conversion materials have attracted attention due to their wide applications, including special three-dimension displays [2][3][4][5] and biology labels.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and up-conversion luminescence of Yb³⁺/Er³⁺/Tm³⁺ doped Ca₉Y(PO₄)₇

et al. 2015

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Samples of Ca 9 Y(PO 4 ) 7 co-doped with Yb 3+ /Er 3+ , Yb 3+ /Tm 3+ , or Yb 3+ /Er 3+ /Tm 3+ have been synthesized through two different routes, i.e. a modified hydrothermal method, followed by annealing in air at 850 1C and a solid-state reaction. The results of SEM and TEM show that the particle size of the samples synthesized by the solid state reaction method is about several micrometers, while that of the sample synthesized by the modified hydrothermal method is around 180 nm. The up-conversion luminescence of samples is studied as a function of different Yb 3+ , Er 3+ , Tm 3+ ion concentrations and laser powers. Under 980 nm laser excitation, samples of Yb 3+ /Er 3+ co-doped Ca 9 Y(PO 4 ) 7 generate green and red emissions, while samples co-doped by Yb 3+ /Tm 3+ generate blue and red emissions. The red emission is most intense in Yb 3+ /Er 3+ co-doped samples, while blue emission is predominant in Yb 3+ /Tm 3+ co-doped samples. The main mechanism that allows for the up-conversion observed in Yb 3+ /Er 3+ , Yb 3+ /Tm 3+ or Yb 3+ /Er 3+ /Tm 3+ doped Ca 9 Y(PO 4 ) 7 is attributed to the energy transfer among Yb 3+ and the various Er 3+ /Tm 3+ ions in excited states.

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Multicolor upconversion NaLuF₄ fluorescent nanoprobe for plant cell imaging and detection of sodium fluorescein

Abstract: Detection limit of sodium fluorescein in plant cells can reach 0.14 μg cm−3 based on LRET from UCNPs to SF.

Cited by 46 publications

References 39 publications

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Rare earth based nanostructured materials: synthesis, functionalization, properties and bioimaging and biosensing applications

Synthesis and up-conversion luminescence of Yb³⁺/Er³⁺/Tm³⁺ doped Ca₉Y(PO₄)₇

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Multicolor upconversion NaLuF4 fluorescent nanoprobe for plant cell imaging and detection of sodium fluorescein

Abstract: Detection limit of sodium fluorescein in plant cells can reach 0.14 μg cm−3 based on LRET from UCNPs to SF.

Cited by 46 publications

References 39 publications

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Synthesis of Multicolor Core/Shell NaLuF4:Yb3+/Ln3+@CaF2 Upconversion Nanocrystals

Rare earth based nanostructured materials: synthesis, functionalization, properties and bioimaging and biosensing applications

Synthesis and up-conversion luminescence of Yb3+/Er3+/Tm3+ doped Ca9Y(PO4)7

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Multicolor upconversion NaLuF₄ fluorescent nanoprobe for plant cell imaging and detection of sodium fluorescein

Synthesis and up-conversion luminescence of Yb³⁺/Er³⁺/Tm³⁺ doped Ca₉Y(PO₄)₇