An experimental design approach for hydrothermal synthesis of NaYF4: Yb3+, Tm3+ upconversion microcrystal: UV emission optimization

Darani, Masoume Kaviani; Bastani, Saeed; Ghahari, Mehdi; Kardar, Pooneh

doi:10.1016/j.optmat.2015.09.017

Cited by 10 publications

(5 citation statements)

References 18 publications

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“…The synthesis of materials that convert photons from low to high energy has attracted much attention. The UC process makes it possible to display visible or ultraviolet emissions by exposing near-infrared light as an excitation source, which is inexpensive, nondestructive, invisible to the human eye, and especially abundant in nature (Jalili et al , 2019; Kaviani Darani et al , 2015). The particles can absorb radiations with high wavelengths and convert them to short wavelengths.…”

Section: Introductionmentioning

confidence: 99%

“…Several anticounterfeiting technologies such as simple markers, plasmonic security labels, holograms and security inks have been developed during the past decades to protect against counterfeiting (Duhan et al , 2021; Jalili et al , 2018; Kaviani Darani et al , 2015; Sun et al , 2006). One of these techniques is using UC materials in suitable inks to prevent counterfeiting.…”

Section: Introductionmentioning

confidence: 99%

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The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

Bastani

Jalili

Ghahari

et al. 2022

PRT

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Purpose This study aims to investigate the effect of trisodium nitrilotriacetic acid (NTA) on the physical and luminescence emission properties of NaLuF4:Yb, Tm Upconversion (UC) particles and compared with trisodium citrate (CA). Upconversion materials have been remarkably considered in many applications in the past decades. However, the morphology of the UC particles affects their emission properties, depending on the synthesis situation. Design/methodology/approach The UC particles were synthesized by the hydrothermal method. Properties such as crystal phase, particle morphology, particle size, smoothness and uniformity of particle surface and their emission intensity in the UV–Vis region were studied. Findings Observations showed that pH is an essential factor in determining the crystalline phase. In addition, quality factors affect the morphology, particle size and surface smoothness of crystalline facets. It was also found that the UC particles synthesized in the presence of trisodium NTA have a much higher emission intensity than those synthesized in the presence of CA. The use of UC particles in security inks to maintain the brand was also investigated. Originality/value To the best of the authors’ knowledge, for the first time, the effect of trisodium NTA as a chelating agent was investigated on morphology and UC intensity of NaLuF4:Yb,Tm phosphor.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

Bastani

Jalili

Ghahari

et al. 2022

PRT

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“…They have wide spread applications in various fields such as bio-sensors, bio-imaging, environment monitoring [1,2], information storage [3,4], anti-counterfeiting [5][6][7] and solar cells [8,9], and thus attracted a tremendous amount of attention for the past decade [10][11][12]. These trivalent lanthanide-doped ions have unique spectral and magnetic properties and a broad application prospects in many areas [13,14].…”

Section: Introductionmentioning

confidence: 99%

Simultaneously tunable luminescence and magnetic properties in bifunctional NaYF4: Yb3+/Er3+ microcrystals

Tang¹,

Liu²,

Wu³

et al. 2020

ScienceAsia

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A series of bifunctional NaYF 4 microcrystals doped with Yb 3+ /Er 3+ have been successfully synthesized through a facile hydrothermal method. They have been characterized by XRD, SEM, photoluminescence spectra and the magnetization. These microcrystals can emit ∼540 nm green light from Er 3+ -4 f n electronic transition 4 S 3/2 -4 I 15/2 , ∼657 nm red light from Er 3+ -4 f n electronic transition 4 F 9/2 -4 I 15/2 , and ∼407 nm violet light from Er 3+ -4 f n electronic transition 2 H 4 9/2 I 15/2 , under the excitation of 980 nm infrared light. It is found that the red emission is more sensitive to the doping of Yb 3+ ion than the green one, leading to the significant increase in the ratio of red emission to green emission with increasing concentration of Yb 3+ ion. In addition, the paramagnetic property was remarkably enhanced with increasing concentration of Yb 3+ ion which is ascribed to the substitution of nonmagnetic ion Y 3+ by the magnetic ion Yb 3+ with large magnetic moment.

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“…[27,28] The unique near-infrared-to-nearinfrared (NIR-to-NIR) UC luminescence characteristic of Yb 3+ (Yttrium) and Tm 3+ (Thulium) codoped UCLNPs enables an extreme signal-to-noise ratio and deep-seated in vivo penetrating in animal imaging. [29][30][31][32][33] Different chemical techniques, including sol-gel processing, [34,35] combustion method, [36] coprecipitation, [37] hydrothermal synthesis, [38,39] thermal decomposition, [37] ionic fluid-based fabrication, [40] and microemulsionaided [41,42] and microwave-aided methods [43] have been used to fabricate UCLNPs. In this research, the aim is to obtain the best reaction conditions for the synthesis of nanoparticles NaLuF 4 :Yb 3+ /Tm 3+ with suitable reagent properties and comparison of the compatibility of coated and uncoated nanoparticles so that it can be used in medical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Different chemical techniques, including sol–gel processing, combustion method, coprecipitation, hydrothermal synthesis, thermal decomposition, ionic fluid‐based fabrication, and microemulsion‐aided and microwave‐aided methods have been used to fabricate UCLNPs. In this research, the aim is to obtain the best reaction conditions for the synthesis of nanoparticles NaLuF 4 :Yb 3+ /Tm 3+ with suitable reagent properties and comparison of the compatibility of coated and uncoated nanoparticles so that it can be used in medical applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and in vitro toxicity evaluation of upconversion luminescence NaLuF₄:Yb³⁺/Tm³⁺ nanoparticles suitable for medical applications

Asadi

Ghahari

Hassanzadeh-Tabrizi

et al. 2019

J Chinese Chemical Soc

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Synthesis, characterization, and in vitro toxicity evaluation of upconversion luminescence NaLuF 4 :Yb 3+ /Tm 3+ nanoparticles (UCLNPs) are reported in the current study. Initially, the synthesized lanthanide trifluoroacetate (Ln (OOCCF 3 ) 3 ) precursor was used to fabricate NaLuF 4 nanoparticles doped with Yb 3+ and Tm 3+ metal ions. The nanoparticles were coated with calcium carbonate (CaCO 3 ) after removing the hydrophobic species on them to enhance their biocompatibility. The in vitro methylthiazolyldiphenyl-tetrazoliumbromide (MTT) test was used to evaluate the toxicity of synthesized NaLuF 4 : Yb 3+ /Tm 3+ nanoparticles (NLF-5) on L929 mouse fibroblast cell lines. The transmission electron microscopy image showed that the particle size of NaLuF 4 :Yb 3+ /Tm 3+ was 32 nm. The synthesized NLF-5 nanoparticles have both α-cubic and β-hexagonal crystalline structures that provided a superb near-infrared-to-near-infrared upconversion luminescence signal when excited at 980 nm. MTT test results show that the death of L929 fibroblast cells was observed only at concentrations above 250 μg/mL of NaLuF 4 :Yb 3+ /Tm 3+ nanoparticles. In addition, with an increase in patrol time of 24, 48, and 72 hr, cell toxicity increased significantly, while the coated nanoparticles did not have any toxic effects. The synthesized nanoparticles could be used as a suitable material for medical applications due to their small particle size, high photoluminescence emission intensity, and low toxicity. K E Y W O R D S cytotoxicity, upconversion, L929 mouse fibroblast cell lines, NaLuF 4 :Yb 3+ /Tm 3+ nanoparticles, thermal decomposition

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An experimental design approach for hydrothermal synthesis of NaYF4: Yb3+, Tm3+ upconversion microcrystal: UV emission optimization

Cited by 10 publications

References 18 publications

The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

Simultaneously tunable luminescence and magnetic properties in bifunctional NaYF4: Yb3+/Er3+ microcrystals

Synthesis, characterization, and in vitro toxicity evaluation of upconversion luminescence NaLuF₄:Yb³⁺/Tm³⁺ nanoparticles suitable for medical applications

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An experimental design approach for hydrothermal synthesis of NaYF4: Yb3+, Tm3+ upconversion microcrystal: UV emission optimization

Cited by 10 publications

References 18 publications

The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

The role of chelating agent on the structure and up-conversion property of NaLuF4:Yb,Tm as security ink phosphor

Simultaneously tunable luminescence and magnetic properties in bifunctional NaYF4: Yb3+/Er3+ microcrystals

Synthesis, characterization, and in vitro toxicity evaluation of upconversion luminescence NaLuF4:Yb3+/Tm3+ nanoparticles suitable for medical applications

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Synthesis, characterization, and in vitro toxicity evaluation of upconversion luminescence NaLuF₄:Yb³⁺/Tm³⁺ nanoparticles suitable for medical applications