High‐Sensitivity Ratiometric Temperature Sensing and Information Encryption Based on Upconversion Emissions from Lanthanide Ions Doped BaTiO₃ Phosphor

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract Upconversion emissions from lanthanide ions have unparalleled advantages in the field of temperature sensing and information encryption. Despite extensive research on probes, developing highly sensitive measurement applications still poses a significant challenge. This study utilizes doped BaTiO₃ as foundational material to develop fiber optic probe with enhanced sensitivity. The optical temperature‐sensing capabilities are assessed based intensity ratio various energy levels BaTiO₃: Yb/Tm/Er phosphors. Notably, non‐thermal coupling level between Tm Er demonstrates highest sensitivity, achieving maximum relative sensitivity 2.70% K⁻¹ at 303 K. By leveraging temperature‐dependent color change material, large‐capacity photonic barcode for storage encrypted transmission is developed, thereby expanding potential monitoring.

Language: Английский

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Eu3+ doping induces asynchronous tuning of luminescence and afterglow in self-activated LiZnSbO4 host for multiple applications

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161129 - 161129

Published: Feb. 1, 2025

Language: Английский

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Thermal‐Adaptive Photonic MOFs for High‐Performance X‐ray Scintillator

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Dynamic responsive scintillating materials play a significant role in advanced radiation detection technology. However, the issues such as thermal quenching, uncontrollable structure, and unsatisfactory cost, still remain obstacles to diversified development of recent scintillators. Herein, strategy is proposed by assembling well‐designed inorganic organic building units with low cost construct series novel lanthanide MOFs for thermal‐adaptive X‐ray scintillators (TAXS). Based on delicate energy level design, as‐obtained TAXS present ultra‐high relative light yield (max ≈49 700 photons MeV −1 ), tunable luminescence (from green red band), dose rate limit (min ≈118.7 nGy air s ). Importantly, these exhibit unique behaviors including thermal‐facilitated metal‐ligand distance contraction X‐ray‐induced carrier generation, resulting obvious enhanced radio‐luminescence. They maintain perfect linear response (R 2 > 99.8%) excellent stability (>95% after 215 Gy irradiation) during heat treatment. Both TAXS‐based membranes high imaging resolution ≈24 lp mm ) inks customizable printing demonstrate potential work normally at elevated temperatures. Such supports photonic functional fabricate high‐performance harsh condition services.

Language: Английский

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Structure‐Controlled Interpenetrated MOF@COF via C−C Linkage for Enhanced Photocatalysis

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(45)

Published: July 26, 2024

Abstract Diversifying the connecting junctions will be feasible for controllable collaboration of metal–organic frameworks (MOFs) and covalent organic (COFs) to rationally design multifunction‐integrated heterostructures with enhanced performance, yet it is in nascent stage. Herein, by intelligently exploiting polymerization vinyl group, C−C bond innovatively introduced construct core–shell MOF@COF adjustable shell thickness rare interpenetrated structure. The unique structure endows prepared C−C‐linked MIL‐68@COF−Vs more superior visible‐light harvesting photogenerated carrier separation capability, leading significantly higher photocatalytic activity faster degradation rate than pristine MIL‐68‐C=Cs, COF−V, imine‐linked MIL‐68‐NH 2 @COF−V. Further, customized MIL‐68@COF−V situ grown as reusable films dramatically boosted performance under ambient conditions, which realize highly efficient tetracycline within 15 min (96.5 %), rhodamine 6G 25 (97.6 phenol 40 (95.3 %) solar drive. This work exhibits distinctive advantages junction construction, highlights application prospect rational‐designed heterostructure treatment persistent pollutants.

Language: Английский

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Conformation‐Driven Responsive 1D and 2D Lanthanide‐Metal‐Organic Framework Heterostructures for High‐Security Photonic Barcodes

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 10, 2024

Development of luminescent segmented heterostructures featuring multiple spatial-responsive blocks is important to achieve miniaturized photonic barcodes toward anti-counterfeit applications. Unfortunately, dynamic manipulation the spatial color at micro/nanoscale still remains a formidable challenge. Here, straightforward strategy proposed construct spatially varied through amplifying conformation-driven response in flexible lanthanide-metal-organic frameworks (Ln-MOFs), where thermally induced minor conformational changes organic donors dramatically modulate photoluminescence Ln acceptors. Notably, compositionally and structurally distinct (1D 2D) are further constructed epitaxial growth responsive MOF benefiting from isomorphous Ln-MOF structures. The controlled emissive colors with distinguishable spectra carry fingerprint information specific heterostructure, thus allowing for effective construction smart characteristics. results will deepen understanding mechanism also provide guidance fabricate complex stimuli-responsive hierarchical microstructures advanced optical recording high-security labels.

Language: Английский

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LaSc3(BO3)4:Eu3+&g-C3N4 composite phosphor for dual-mode temperature sensing

Journal of Luminescence, Journal Year: 2025, Volume and Issue: unknown, P. 121084 - 121084

Published: Jan. 1, 2025

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Realizing Antithermal Quenching Red Emission in Mn⁴⁺‐Activated Rb₂NaVF₆ for Optical Thermometry Sensor Application

Luminescence, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 1, 2025

ABSTRACT Currently, the development of red Mn 4+ ‐activated fluoride luminescent materials attracts a lot attention in optical thermometry sensors, solid lighting, display, and plant growth areas. Nevertheless, thermal stability is still crucial issue. Herein, new Rb 2 NaVF 6 :Mn material with outstanding was successfully synthesized through facial coprecipitation method. ions prefer to occupy VF octahedra based on accurate Rietveld refinement results. Accordingly, as‐prepared exhibits broad absorption region from 300 500 nm maximum 468 nm, matching well near‐ultraviolet blue InGaN chip. Upon excitation, can emit narrow‐band light at 632 nm. Notably, shows superior antithermal quenching properties, which integrated intensities 175°C realize as high 140% than that 25°C. Owing diverse behavior between anti‐Stokes Stokes emission, displays promising candidates sensors relative sensitivity S r 0.49%. This study offers insight into developing materials.

Language: Английский

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Phonon-Assisted Thermally Enhanced Up-conversion Fluorescence Lifetime Thermometry and Visualized Temperature Warning in Yb³⁺–Ho³⁺-Codoped Lu₂Mo₃O₁₂

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Fluorescence thermometers have been plagued by the problem of thermal quenching (TQ) for a long time when operating at higher temperatures, which seriously hindered their performances in practical application. Ho3+-Yb3+-codoped Lu2Mo3O12 phosphors were synthesized designing TQ-immune fluorescence thermometers. Temperature-sensitive upconversion (UC) lifetime (FL) and color modulated utilizing appropriate phonon-assisted energy transfer (PAET) from Yb3+ (2F5/2) to Ho3+ (5I5) based on with negative expansion (NTE) properties. Under 980 nm laser excitation, FL 5F4 → 5I8 (Ho3+) transition extended 35.65 52.94 μs (280 480 K) corresponding changed green red Lu2Mo3O12: Ho3+, Yb3+. Accordingly, dual-mode self-calibration thermometer was constructed through technology (5F4 transition) Commission Internationale de Eclairage chromaticity coordinate ratio (CIER) technology. Ultimately, feasibility verified high stability temperature sensitivity (δT = 0.9 K, CIER), indicating that it is prospective candidate visualized warning sensing.

Language: Английский

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Photochemical afterglow with ultrabright lanthanide luminescence for homogeneous immunoassay

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Anti-thermal quenching in NdIII molecular near-infrared thermometers operating at physiological temperatures

Communications Chemistry, Journal Year: 2025, Volume and Issue: 8(1)

Published: May 3, 2025

Examples of molecular complexes acting as thermometers operating at room temperature in near infrared region are scarce, therefore this work showcases the anti-thermal quenching effect on neodymium(III) working biological windows within physiological range. A mononuclear complex, [Nd(L)(NO3)3] (1Nd), where L is a macrocyclic ligand, was synthesized and used precursor to develop two novel species: dinuclear, [(Nd(L)(NO3))2(µ-BDC)](NO3)2·H2O (2Nd), linked by 1,4-benzenedicarboxylate (BDC), hexameric, [(Nd(L))(µ-BTC)(H2O)]6·35H2O (6Nd), with 1,3,5-benzenetricarboxylate (BTC). Thermometric properties were studied range (292-332 K), utilizing 804 nm laser excitation (first window) monitoring emissions second window (908, 1065, 1340 nm) associated 4F3/2 → 4I9/2, 4I11/2, 4I13/2 transitions, respectively. Among complexes, hexamer 6Nd exhibited exceptional performance, Sr 2.4%K-1 293 K, when luminescence intensity ratio (LIR) Stark components 4I11/2 emission used, positioning it high-performance NdIII-based thermometer. All displayed behavior, surpassing current molecular-based near-infrared region. Theoretical calculations using complete active space self consistent field (CASSCF) Boltzmann population models between Kramers doublets level performed rationalize behavior.

Language: Английский

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