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

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-03-19 DOI:10.1021/acs.inorgchem.4c0559510.1021/acs.inorgchem.4c05595

Yexuan Zhang, Changheng Chen, Yanqi Wu, Renze Chen, Ruibo Gao and Chongfeng Guo*,

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Abstract

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 for designing TQ-immune fluorescence thermometers. Temperature-sensitive upconversion (UC) fluorescence lifetime (FL) and fluorescence color were modulated by utilizing appropriate phonon-assisted energy transfer (PAET) from Yb³⁺ (²F_5/2) to Ho³⁺ (⁵I₅) based on Lu₂Mo₃O₁₂ with negative thermal expansion (NTE) properties. Under a 980 nm laser excitation, the FL of the ⁵F₄ → ⁵I₈ (Ho³⁺) transition extended from 35.65 to 52.94 μs (280 to 480 K) and the corresponding fluorescence color changed from green to red in Lu₂Mo₃O₁₂: Ho³⁺, Yb³⁺. Accordingly, a dual-mode self-calibration fluorescence thermometer based on Lu₂Mo₃O₁₂: Ho³⁺, Yb³⁺ was constructed through FL technology (⁵F₄ → ⁵I₈ transition) and Commission Internationale de Eclairage chromaticity coordinate ratio (CIER) technology. Ultimately, the feasibility of the thermometer was verified to have high stability and temperature sensitivity (δT = 0.9 K, CIER), indicating that it is a prospective candidate for visualized temperature warning and sensing.

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Yb3+ -Ho3 +-共掺杂Lu2Mo3O12声子辅助热增强上转换荧光寿命测温和可视化温度预警

长期以来，荧光温度计在高温下工作时存在热猝灭问题，严重影响了其在实际应用中的性能。合成了Ho3+ -Yb3 +-共掺杂Lu2Mo3O12荧光粉，用于设计tq免疫荧光温度计。以负热膨胀（NTE）性质的Lu2Mo3O12为材料，利用适当的声子辅助能量转移（PAET）从Yb3+ (2F5/2)到Ho3+ (5I5)，调制了温度敏感上转换（UC）荧光寿命（FL）和荧光颜色。在980 nm激光激发下，Lu2Mo3O12: Ho3+， Yb3+中5F4→5I8 （Ho3+）跃迁的荧光度从35.65 μs增加到52.94 μs (280 ~ 480 K)，荧光颜色由绿色变为红色。据此，通过FL技术（5F4→5I8过渡）和Commission Internationale de Eclairage色度坐标比（CIER）技术，构建了基于Lu2Mo3O12: Ho3+， Yb3+的双模自校准荧光温度计。最终，该温度计具有较高的稳定性和温度灵敏度（δT = 0.9 K， CIER），表明它是可视化温度预警和传感的潜在候选产品。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.