Superior Multimodal Luminescence in a Stable Single‐Host Nanomaterial with Large‐Scale Synthesis for High‐Level Anti‐Counterfeiting and Encryption

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Multimode luminescent materials exhibit tunable photon emissions under different excitation or stimuli channels, endowing them high encoding capacity and confidentiality for anti-counterfeiting encryption. Achieving multimode luminescence into a stable single material presents promising but remains challenge. Here, the downshifting/upconversion emissions, color-tuning persistent (PersL), temperature-dependent multi-color hydrochromism are integrated Er3+ ions doped Cs2NaYbCl6 nanocrystals (NCs) by leveraging shallow defect levels directed energy migration. The resulting NCs display strong static dynamic colorful in response to ultraviolet, 980-nm laser, X-ray. Additionally, distinct colors as temperature increases from 330 430 K. Surprisingly, it also demonstrates ability of reversible emission modal color water. Theoretical calculations experimental characterizations reveal that self-trapped exciton state (STEs), chlorine vacancy defects, ladderlike 4f contribute multimodal luminescence. More importantly, has extremely remarkable environmental stability, which can be stored air more than 18 months, showing commercial prospects. This work not only gives new insights lanthanide-based metal halide provides route developing nanomaterials

Language: Английский

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Cross Relaxation Enables Spatiotemporal Color‐Switchable Upconversion in a Single Sandwich Nanoparticle for Information Security

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(13)

Published: Dec. 27, 2023

Abstract Smart control of ionic interaction dynamics offers new possibilities for tuning and editing luminescence properties lanthanide‐based materials. However, it remains a daunting challenge to achieve the dynamic cross relaxation mediated photon upconversion, in particular involved intrinsic photophysics is still unclear. Herein, this work reports conceptual model realize color‐switchable upconversion Tm 3+ through spatiotemporal design NaYF 4 :Gd@NaYbF :Tm@NaYF sandwich nanostructure. It shows that plays key role modulating emission colors . Interestingly, found there short temporal delay occurrence contrast spontaneous as result slight energy mismatch between relevant levels. This further enables fine color upon non‐steady state excitation. Moreover, characteristic quenching time proposed describe evolution quantitatively. These findings present deep insight into physics interactions heavy doping systems, also show great promise frontier applications including information security, anti‐counterfeiting nanophotonics.

Language: Английский

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Enabling Multimodal Luminescence in a Single Nanoparticle for X-ray Imaging Encryption and Anticounterfeiting

Nano Letters, Journal Year: 2024, Volume and Issue: 24(31), P. 9691 - 9699

Published: July 25, 2024

Multimodal luminescent materials hold great promise in a diversity of frontier applications. However, achieving the multimodal responsive luminescence at single nanoparticle level, especially besides light stimuli, has remained challenge. Here, we report conceptual model to realize by constructing both mechanoluminescence and photoluminescence nanoparticle. We show that lanthanide-doped fluoride nanoparticles are able produce excellent through X-ray irradiation, color-tunable becomes available selecting suitable lanthanide emitters core–shell–shell structure. Furthermore, design multilayer core–shell nanostructure enables emissions including radioluminescence, persistent luminescence, mechanoluminescence, upconversion, downshifting, thermal-stimulated simultaneously under multichannel excitation stimuli. These results provide new insights into mechanism induced nanocrystals contribute development smart toward imaging encryption, stress sensing, anticounterfeiting.

Language: Английский

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Full-Color upconversion luminescence nanoplatform for real three-dimensional volumetric color displays

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150790 - 150790

Published: March 28, 2024

Language: Английский

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Advances in plasmonic enhanced luminenscence of upconversion nanoparticles

Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 34, P. 101788 - 101788

Published: Nov. 8, 2023

Language: Английский

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Ultrastrong up-conversion luminescence in inert-active-inert sandwich structure with critical inert-core size

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148665 - 148665

Published: Jan. 10, 2024

Language: Английский

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Pressure-Triggered Fluorescence Intensity Ratio Variations of YNbO₄:Bi³⁺/Ln³⁺ (Ln = Eu or Sm) for High-Sensitivity Optical Pressure Sensing

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(8), P. 3882 - 3892

Published: Feb. 15, 2024

Optical pressure sensing by phosphors is a growing area of research. However, the main measurement methods rely on movement central peak position, which has significant drawbacks for practical applications. This paper demonstrates feasibility using fluorescence intensity ratio (FIR) different emission peaks sensing. The FIR (

Language: Английский

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Nanothermometry and luminescence modulation via separated activators in core-shell-shell fluoride nanoparticles

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 111159 - 111159

Published: March 1, 2025

Language: Английский

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Dynamic modulation of multicolor upconversion luminescence of Er3+ via excitation pulse width

The Journal of Chemical Physics, Journal Year: 2024, Volume and Issue: 160(20)

Published: May 28, 2024

Lanthanide-doped upconversion (UC) luminescent materials display multicolor emissions, making them ideal for a variety of applications, such as multi-channel biological imaging, fluorescence encryption, anti-counterfeiting, and 3D display. Manipulating the UC emissions with fixed composition is crucial their applications. Herein, we propose facile strategy to achieve pulse-width-dependent in NaYF4:Yb/Er/Tm nanocrystals. Upon excitation 980 nm continuous-wave laser diode, Er3+ ions NaYF4:20%Yb,15%Er,1%Tm nanocrystals exhibited red-to-green (R/G) ratio 11.3. Nevertheless, by employing pulse widths from 0.1 10 ms, R/G can be easily adjusted 0.9 11.3, resulting continuous remarkable color transformation green, yellow, orange, red. By virtue dynamic luminescence variation these nanocrystals, demonstrated potential applications areas anti-counterfeiting information encryption. These findings provide deep insights into excited-state dynamics energy transfer upon excitation, which may pave way designing toward versatile

Language: Английский

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Manipulating energy migration in nanoparticles toward tunable photochromic upconversion

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 30, 2024

Smart control of energy interactions plays a key role in manipulating upconversion dynamics and tuning emission colors for lanthanide-doped materials. However, quantifying the flux particular migration representative sensitizer-activator coupled system has remained challenge. Here we report conceptual model to examine single nanoparticle by designing an interfacial transfer mediated nanostructure. We show that indeed occurs simultaneously with competition between them can be quantified proposing characteristic ratio parameter. Moreover, this is also able realize color-switchable photochromic temporal up-transition processes. These findings offer deep insight into understanding provide versatile approach nanostructures tunable colors, showing great promise applications logic operation information security.

Language: Английский

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