An efficient synthetic strategy for uniform perovskite core–shell nanocubes NaMgF3:Mn2+,Yb3+@NaMgF3:Yb3+ with enhanced near infrared upconversion luminescence

Ding, Sha; Yang, Xianfeng; Song, Enhai; Liang, Chaolun; Zhou, Bo; Wu, Ming; Zhou, Wuzong; Zhang, Q. Y.

doi:10.1039/c7tc05416e

Cited by 9 publications

(7 citation statements)

References 45 publications

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“…The spontaneous formation of KMgF 3 : Ln 3+ @KMgF 3 core/shell UCNPs can be ascribed to the aliovalent Ln 3+ doping and higher affinity of Ln 3+ than Mg 2+ for F – ions, which favor the aggregation of Ln 3+ in the KMgF 3 lattice via charge compensation . Such aggregation-induced formation of the core/shell structure had also been reported by Zhang et al in the synthesis of NaMgF 3 : Mn 2+ /Yb 3+ @NaMgF 3 : Yb 3+ core/shell nanoparticles . X-ray photoelectron spectroscopy (XPS) identified the trivalent state of Ln 3+ in the UCNPs (Figure S9), and the actual doping concentrations of Ln 3+ were determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), showing the Yb 3+ concentration increased from 0.4 to 13.5 mol % with an increase in its feeding concentration from 1.0 to 20.0 mol % (Table S1).…”

supporting

confidence: 60%

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

Zhang,

Huang,

Zheng

et al. 2023

Nano Lett.

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Lanthanide (Ln3+)-doped photon avalanche (PA) upconversion nanoparticles (UCNPs) have great prospects in many advanced technologies; however, realizing efficient PA luminescence in Ln3+-doped UCNPs remains challenging due to the deleterious surface and lattice quenching effect. Herein, we report a unique strategy based on the pyrolysis of KHF2 for the controlled synthesis of aliovalent Ln3+-doped KMgF3 UCNPs, which can effectively protect Ln3+ from luminescence quenching by surface and internal OH– defects and thereby boost upconversion luminescence. This enables us to realize efficient PA luminescence from Tm3+ at 802 nm in KMgF3: Tm3+ UCNPs upon 1064 nm excitation, with a giant nonlinearity of ∼27, a PA response time of 281 ms, and an excitation threshold of 16.6 kW cm–2. This work may open up a new avenue for exploring highly nonlinear PA luminescence through aliovalent Ln3+ doping and crystal lattice engineering toward diverse emerging applications.

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supporting

confidence: 60%

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

Zhang,

Huang,

Zheng

et al. 2023

Nano Lett.

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“…Synthesis of NaMgF 3 :Tb 3+ Nanoparticles: NaMg 1−x F 3 :xTb 3+ (x = 0.06-0.3, with a concentration gradient of 0.03) nanoparticles were synthesized by using a hydrothermal route reported by Zhang et al with some modifications. [52][53][54] 1, 1.5, and 2 times of the original reactant concentrations were compared and 1.5 times was chosen as the optimal condition as the composition plan in this work (see Figures S1-S3, Supporting Information). Briefly, stoichiometric Mg(NO 3 ) 2 •6H 2 O and Tb(NO 3 ) 3 •5H 2 O (the total amount of Mg and Tb cations was 5 mmol) were dissolved into 5 mL deionized water.…”

Section: Methodsmentioning

confidence: 99%

NaMgF₃:Tb³⁺@NaMgF₃ Nanoparticles Containing Deep Traps for Optical Information Storage

Wang

Chen

Zhuang

et al. 2021

Advanced Optical Materials

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Persistent luminescence (PersL) materials containing deep traps have attracted great attention in the field of optical information storage. However, the lack of nanomaterials with satisfactory light storage ability has become one of the main obstacles to the practical applications. In this work, NaMgF3:Tb3+@NaMgF3:Tb3+ nanoparticles are reported which exhibit excellent light storage ability into deep traps upon X‐ray irradiation and controllable photon emissions under thermal stimulation. A surface passivation strategy by constructing a core–shell structure is adopted, which is proved valid to greatly enhance the PersL efficiency. To understand the possible mechanism on the light storage and thermally stimulated PersL in the NaMgF3:Tb3+@NaMgF3 nanoparticles, an energy level diagram is built and the electronic transition processes are clarified. According to the proposed mechanism, the Tb3+ ions possibly serve as both emitting centers and trap centers in the NaMgF3 host during the X‐ray irradiation. Due to the excellent dispersibility and stability in water, luminescent inks containing the nanoparticles are successfully prepared and the applications to inkjet printing optical information storage and information decryption are demonstrated. The developed NaMgF3:Tb3+@NaMgF3 PersL nanoparticles may inspire further research on lanthanide‐activated fluoride PersL nanoparticles and provide new opportunities to the next‐generation information storage and biomedical technologies.

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“…The formation mechanisms of NaMgF 3 nanocubes via such a simple synthesis method, particularly the unique NaMn 1−x Mg x F 3 @NaMgF 3 core−shell structures, have been thoroughly investigated by Zhang et al 31 To further explore the compositions of the nanocubes, EDS elemental mapping was performed by randomly selecting a nanocube as representative, as shown in Figure 1c−f. The results indicate that the hybrid nanocomposite contains an O element, which may originate from CDs, and Na, Mg, and F elements derived from NaMgF 3 .…”

Section: Resultsmentioning

confidence: 99%

Developing Luminescent Ratiometric Thermometers Based on Dual-Emission of NaMgF₃:Eu³⁺/Carbon Dot Nanocomposites

Li,

Wu,

Chen

et al. 2024

ACS Appl. Nano Mater.

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In recent years, the pursuit of luminescent thermometer probes with low cost and high sensitivity has become a significant research challenge. This work proposes a strategy that employs lanthanide ions and carbon dots with dual-emission with diverse temperature dependencies to achieve high-temperature sensitivity. Specifically, the fabrication of dualactivated temperature probes has been achieved using NaMgF 3 :Eu 3+ /carbon dot nanocomposites through a simple coprecipitation process at room temperature. The optical temperature sensor, NaMgF 3 :Eu 3+ /carbon dot, was developed using Eu 3+ emission as an internal standard and carbon dot as the temperature signal. The sensor exhibits a substantial absolute sensitivity of 8.3 ± 0.2% K −1 and a relative sensitivity of 2.0 ± 0.1%K −1 , both at 300 K, making it a promising candidate for physiological thermometry. Within the temperature range of 300−440 K, the NaMgF 3 :Eu 3+ / carbon dot probe shows a relative sensitivity of better than 1.0%K −1 with good excellent repeatability as well as a nearly linear relationship between the Commission Internationale de l'Echlairage chromaticity coordinates of the observed fluorescent color change. The feasibility of the proposed strategy has also been verified by modifying lanthanide ions, e.g., Tb 3+ . It is anticipated that this pilot study will serve as a springboard for research on dual-mode nanothermometers with superior ratiometric and colorimetric performance.

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An efficient synthetic strategy for uniform perovskite core–shell nanocubes NaMgF₃:Mn²⁺,Yb³⁺@NaMgF₃:Yb³⁺ with enhanced near infrared upconversion luminescence

Abstract: Uniform perovskite core–shell nanocubes NaMn1−xMgxF3@NaMgF3 and NaMn1−xMgxF3:Yb3+@NaMgF3:Yb3+ have been successfully synthesized via a facile one-pot co-precipitation method at room temperature.

Cited by 9 publications

References 45 publications

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

NaMgF₃:Tb³⁺@NaMgF₃ Nanoparticles Containing Deep Traps for Optical Information Storage

Developing Luminescent Ratiometric Thermometers Based on Dual-Emission of NaMgF₃:Eu³⁺/Carbon Dot Nanocomposites

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An efficient synthetic strategy for uniform perovskite core–shell nanocubes NaMgF3:Mn2+,Yb3+@NaMgF3:Yb3+ with enhanced near infrared upconversion luminescence

Abstract: Uniform perovskite core–shell nanocubes NaMn1−xMgxF3@NaMgF3 and NaMn1−xMgxF3:Yb3+@NaMgF3:Yb3+ have been successfully synthesized via a facile one-pot co-precipitation method at room temperature.

Cited by 9 publications

References 45 publications

Lanthanide-Doped KMgF3 Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

Lanthanide-Doped KMgF3 Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

NaMgF3:Tb3+@NaMgF3 Nanoparticles Containing Deep Traps for Optical Information Storage

Developing Luminescent Ratiometric Thermometers Based on Dual-Emission of NaMgF3:Eu3+/Carbon Dot Nanocomposites

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An efficient synthetic strategy for uniform perovskite core–shell nanocubes NaMgF₃:Mn²⁺,Yb³⁺@NaMgF₃:Yb³⁺ with enhanced near infrared upconversion luminescence

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

Lanthanide-Doped KMgF₃ Upconversion Nanoparticles for Photon Avalanche Luminescence with Giant Nonlinearities

NaMgF₃:Tb³⁺@NaMgF₃ Nanoparticles Containing Deep Traps for Optical Information Storage

Developing Luminescent Ratiometric Thermometers Based on Dual-Emission of NaMgF₃:Eu³⁺/Carbon Dot Nanocomposites