Three isostructural hexanuclear lanthanide–organic frameworks for sensitive luminescence temperature sensing over a wide range

Xia, Tifeng; Cao, Wenqian; Guan, Lingling; Zhang, Jun; Jiang, Fuming; Yu, Libing; Wan, Yating

doi:10.1039/d1dt04190h

Cited by 11 publications

(7 citation statements)

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“…[35][36][37][38] This molecule has been used to synthesize RE based MOFs where the metal nodes have been reported to be hydroxo (m 3 -OH − ) bridged hexanuclear clusters. [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] In contrast, it was found that in the case of Ho 3+ and terephthalic acid (BDC), the addition of 2-FBA to the synthesis resulted in a uoro-bridged hexanuclear cluster in a UiO-66 analog. 55 Additionally, it was found that Ho 3+ could extract uorine from 2-FBA and form HoF 3 .…”

Section: Introductionmentioning

confidence: 99%

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

et al. 2022

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“…The excitations resulting from light absorption in the antennas is transferred to the metal centers, where recombination leads to the emission of photons with characteristic frequencies. − If the energy differences between the antenna excited π*−π state and the Ln exited states are sufficiently low, thermal activation can result in a back-transfer, thus rendering a temperature dependence to the Ln emission intensities. − Ratiometric combination of two different lanthanides (e.g., Tb(III), Eu(III)) then allows, after a suitable calibration, the determination of temperature from the ratio of the two characteristic Ln emissions. Ratiometric thermometers based on this strategy have been reported in earlier studies. − …”

Section: Introductionmentioning

confidence: 98%

Stacking Lanthanide-MOF Thin Films to Yield Highly Sensitive Optical Thermometers

Chen

Haldar

Wöll

2023

ACS Appl. Mater. Interfaces

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Easy-to-integrate, remote read-out thermometers with fast response are of huge interest in numerous application fields. In the context of optical read-out devices, sensors based on the emission of lanthanides (Eu(III), Tb(III)) are particularly promising. Here, by using a layer-by-layer (LbL) approach in the liquid-phase epitaxy process, a series of continuous, low-thickness lanthanide-MIL-103 SURMOFs were fabricated to yield highly sensitive thermometers with optical readout. These Ln-SURMOFs exhibit remarkable temperature-sensing photoluminescence behavior, which can be read out using the naked eye. High transmittance is realized as well by precisely controlling the film thickness and the quality of these Ln-SURMOF thermometers. Moreover, we demonstrate that the thermal sensitivity can be improved in the temperature regime above 120 K, by controlling the energy transfer between Tb(III) and Eu(III). This performance is achieved by employing a sophisticated supramolecular architecture, namely MOF-on-MOF heteroepitaxy.

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“…A simple, low-cost, accurate noncontact T determination method is necessary. Fluorescent T sensors satisfy the requirements of noncontact T determination . Coordination polymers (CPs) or metal–organic frameworks (MOFs) are important material sources of fluorescent T sensors.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Eu³⁺/Tb³⁺ Metal–Organic Frameworks for Ratiometric Temperature Sensing Regulated by Ligand Energy

Miao

Liu

et al. 2022

Inorg. Chem.

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This work presents three series of Eu/Tb metal–organic frameworks (MOFs) containing benzophenone-4,4′-dicarboxylic acid (H2BPNDC), 4,4′-dicarboxydiphenyl ether (H2OBA), and terephthalic acid (H2BDC) as the ligands. Eu/Tb MOFs have the same structural features in that their 3D frameworks are simplified as 2,3,10-connected {42.6}2{46.618.819.102}{4}2 topological networks. The solid-state fluorescence spectra of three Eu/Tb MOF series are attributed to the combined emissions of 5D0 → 7F J (J = 1–4) transitions in Eu3+ and 5D4 → 7F J (J = 6–5) transitions in Tb3+. The n Eu:n Tb of Eu/Tb MOFs is optimized as 1:69 based on the relationships between I Tb(545)/I Eu(614) and n Eu:n Tb; that is, Eu0.0143Tb0.9857-L (L = BPNDC2–, OBA2–, and BDC2–) were selected to carry out the following temperature (T)-sensing tests. The fluorescence mechanism of Eu0.0143Tb0.9857-L can be explained by a ligand-to-metal charge transfer combined with an intermetallic Tb3+ → Eu3+ energy transfer. The T-dependent fluorescence indicates linear relationships with sensitivities of 1.85% K–1 for Eu0.0143Tb0.9857-BPNDC, 6.49% K–1 for Eu0.0143Tb0.9857-OBA, and 0.28% K–1 for Eu0.0143Tb0.9857-BDC. The influence of T on the lowest excited triplet energy levels (T1 values) of the ligands reveals that the ligand energy regulation impacts their fluorescence properties, including the sensitivity, fluorescence quenching rate, quantum yield, and fluorescence lifetime. This shows that Eu0.0143Tb0.9857-BPNDC is sufficiently sensitive to T, making it applicable in noncontact T measurements.

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Three isostructural hexanuclear lanthanide–organic frameworks for sensitive luminescence temperature sensing over a wide range

Abstract: Temperature sensing plays essential roles in both fundamental research and high-tech applications. In this work, three isomorphic hexanuclear lanthanide metal-organic frameworks (Ln-MOFs), Ln(BPDC-xN) (Ln = Eu3+/Tb3+, x = 0, 1,...

Cited by 11 publications

References 50 publications

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Stacking Lanthanide-MOF Thin Films to Yield Highly Sensitive Optical Thermometers

Fluorescent Eu³⁺/Tb³⁺ Metal–Organic Frameworks for Ratiometric Temperature Sensing Regulated by Ligand Energy

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Three isostructural hexanuclear lanthanide–organic frameworks for sensitive luminescence temperature sensing over a wide range

Abstract: Temperature sensing plays essential roles in both fundamental research and high-tech applications. In this work, three isomorphic hexanuclear lanthanide metal-organic frameworks (Ln-MOFs), Ln(BPDC-xN) (Ln = Eu3+/Tb3+, x = 0, 1,...

Cited by 11 publications

References 50 publications

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Fluorine extraction from organofluorine molecules to make fluorinated clusters in yttrium MOFs

Stacking Lanthanide-MOF Thin Films to Yield Highly Sensitive Optical Thermometers

Fluorescent Eu3+/Tb3+ Metal–Organic Frameworks for Ratiometric Temperature Sensing Regulated by Ligand Energy

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Fluorescent Eu³⁺/Tb³⁺ Metal–Organic Frameworks for Ratiometric Temperature Sensing Regulated by Ligand Energy