Luminescent Thermometer Based on a Praseodymium(iii) Cyanide-Based Metal–Organic Framework

IF 4.3 2区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR
Nikolia Lalioti, Eleni Zygouri, Vassilis Nastopoulos, Nikos Panagiotou, Carlos D. S. Brites, Luis D. Carlos, Julio Corredoira-Vázquez, Vassilis Tangoulis
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引用次数: 0

Abstract

Trivalent lanthanide ions have emerged as promising candidates for precise and remote temperature sensing. Among them, Pr3+-based luminescent thermometers remain underexplored, particularly those operating in the near-infrared (NIR) spectral region. This work presents the synthesis and thorough characterization of a novel Pr3+-based coordination polymer, {[Pr2IIIPt3II(CN)12(4,4′-bpyO2)4(H2O)6]·4H2O}n (1), as a rare example of Pr3+ luminescent thermometry. Coordination between Pr3+ ions, cyanido-bridged Pt2+ centers, and 4,4′-bpyO2 ligands enables efficient energy transfer, producing luminescence in visible and near-infrared regions. The polymer demonstrates distinct temperature-dependent luminescence over a wide range (12–386 K), with relative thermal sensitivities of ≅1%·K–1 and a minimum temperature uncertainty of 0.2 K.

Abstract Image

基于氰化镨基金属-有机骨架的发光温度计
三价镧系离子已成为精确和远程温度传感的有希望的候选者。其中,基于Pr3+的发光温度计仍未得到充分开发,特别是在近红外(NIR)光谱区域工作的发光温度计。本文介绍了一种新型Pr3+基配位聚合物{[Pr2IIIPt3II(CN)12(4,4 ' -bpyO2)4(H2O)6]·4H2O}n(1)的合成和全面表征,这是Pr3+发光测温的罕见例子。Pr3+离子、氰基桥接Pt2+中心和4,4 ' -bpyO2配体之间的配位实现了有效的能量转移,在可见光和近红外区域产生发光。该聚合物在宽范围内(12-386 K)具有明显的温度依赖性发光,相对热灵敏度为1%·K - 1,最小温度不确定度为0.2 K。
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来源期刊
Inorganic Chemistry
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.
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