Visible‐Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks

Li, Liang; Zhu, Yali; Zhou, X. H.; Brites, Carlos D. S.; Ananias, Duarte; Lin, Zhi; Paz, Filipe A. Almeida; Rocha, João; Wei, Huang; Carlos, Luís D.

doi:10.1002/adfm.201603179

Cited by 196 publications

(126 citation statements)

References 53 publications

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“…The introduction of suitable organic chromophoric ligands into Ln-MOFs may enhance their light absorption ability to increase the fluorescent emission of Ln 3+ ions by the so-called "antennae effect" 41 . Therefore, sensing metal ions/VOCs can be realized by tuning the energy transfer efficiency from "antennae" to Ln 3+ ions through host-guest interactions.…”

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confidence: 99%

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

et al. 2018

Commun Chem

186

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Developing novel lanthanide metal-organic frameworks (Ln-MOFs) to rapidly and reliably differentiate both metal ions in solution and volatile organic compounds (VOCs) in vapor is highly challenging. Here, we describe versatile Eu 3+ /Tb 3+ -MOFs based on a flexible ligand. It is noteworthy that the film fabricated using bimetallic Eu 0.47 Tb 0.63 -MOF and polyvinyl alcohol could serve as an easy and convenient luminescent platform for distinguishing different metal ions and VOCs. The luminescent film exhibits notable fingerprint correlation between the metal ions/VOCs and the emission intensity ratio of Eu 3+ /Tb 3+ ions in Ln-MOFs. As a result, the bimetallic Ln-MOFs show fast recognition of Fe 3+ ion with a response time of <10 s, and can effectively probe styrene vapor within 4 min. Since the developed Ln-MOF film is stable and reliable, this work presents a promising strategy to explore luminescent platforms capable of effectively sensing different metal ions and VOCs.

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confidence: 99%

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

et al. 2018

Commun Chem

186

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“…As a common example, thermal deactivation of the 5 D 0 electronic state of Eu 3+ ion reduces luminescence intensity as temperature increases. Li et al [62] reported a luminescence decrease of 5 D 0 → 7 F 2 in (Me 2 NH 2 ) 3 [Eu 3 (FDC) 4 (NO 3 ) 4 ]·4H 2 O when setting temperature in the range of 12-320 K (Figure 1), and revealed the underlying thermally activated energy transfer mechanism from Eu 3+ to ligand FDC 2− , which is also benefitting from the small energy difference between 5 D 0 level (17241 cm −1 ) of Eu 3+ and triplet excited state (17794 cm −1 ) of FDC 2− . Recently, several examples of the anomalous emission enhancement at increased temperatures have been reported in nanosized materials.…”

Section: Controlling the Temperaturementioning

confidence: 99%

“…b) Digital photographs of the compound under 365 nm excitation recorded at 12 and 300 K. Reproduced with permission [62]. b) Digital photographs of the compound under 365 nm excitation recorded at 12 and 300 K. Reproduced with permission [62].…”

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confidence: 99%

Physical Manipulation of Lanthanide‐Activated Photoluminescence

et al. 2019

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Versatile manipulation of lanthanide photoluminescence not only enables a more thorough understanding of the luminescent mechanism, but also promotes their widespread applications including advanced display and security, bioimaging and biotherapy, and sensors. The traditional chemical methods, engineering of composition, concentration, size, morphology, and surface defects, can easily tune the excitation, energy transfer and emission processes and have been frequently used. Despite the powerful ability to control luminescence intensity and selectivity, these chemical approaches suffer from cumbersome synthesis processes and are usually time consuming and irreversible. Recently, there have been numerous examples of physical approaches realizing in situ, real time, and reversible luminescence manipulation for certain materials under a given excitation. Herein, the existing physical strategies comprising temperature, magnetic field, electric field, and mechanical stress are summarized. For each approach, the action mechanism, material design, applications, as well as current challenges are discussed, and possible development directions and broadening of the potential application areas are considered. Applying Magnetic FieldMagneto-optic interaction, here mainly refers to the effect of applied magnetic field during luminescence measurement, was also widely utilized to regulate luminescence emission of not

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“…Taking account of the excellent optical properties such as large Stokes shifts and high color purity of lanthanide MOFs (LnMOFs), a great deal of important investigations on LnMOFs have been carried out. And then, their promising abilities in detecting temperature, metal ions, oxygen, explosives and polychlorizated benzenes with high sensitivity and selectivity have also been exploited successfully [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Ratiometric luminescent sensors can provide a self-calibrated analyte concentration readout, which is unaffected by fluctuations of sensor concentration and/or instrumental parameters.…”

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confidence: 99%

“…In 1-3, the face-sharing defective cubes-like Eu 4 O 6 metal-oxygen clusters as 8-connected nodes construct the body centered cubic topological network with a Schläfli symbol of 4 24 .6 4 . The unique luminescence feature gives 1 the ability to detect the Al 3+ ions by the ratiometric luminescent approach with slope of 18,502 mol L −1 .…”

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confidence: 99%

A europium(III) metal-organic framework as ratiometric turn-on luminescent sensor for Al3+ ions

Cheng

Chen

et al. 2018

Sci. China Mater.

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In recent years, luminescent metal-organic frameworks (MOFs) as a new type of sensing material are receiving enormous attention for their superior performance in chemical sensors and biosensors [1][2]. Taking account of the excellent optical properties such as large Stokes shifts and high color purity of lanthanide MOFs (LnMOFs), a great deal of important investigations on LnMOFs have been carried out. And then, their promising abilities in detecting temperature, metal ions, oxygen, explosives and polychlorizated benzenes with high sensitivity and selectivity have also been exploited successfully [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Ratiometric luminescent sensors can provide a self-calibrated analyte concentration readout, which is unaffected by fluctuations of sensor concentration and/or instrumental parameters. However, it is noticed that a majority of related reports are limited to the detection of analyte using single emission, although ratiometric sensors based on dual-emission are more reliable and accurate than the sensors based on single emission. For ratiometric sensors, not only are two significantly different emissions necessary, but two emissions need distinctive response to the analyte. From this point of view, LnMOFs with ligand and Ln 3+ emissions are very attractive, because organic ligands and Ln 3+ ions as the luminescent centers possess completely different physical and chemical properties and they would produce different interactions with analytes. Thus, LnMOFs have been extensively applied to construct ratiometric sensors recently [3,22].Aluminium exists in soil, containers and structural materials, which may release Al 3+ due to the corrosion and/or dissolvation, inducing the increasing risk of Al 3+ absorption by the human body [23][24][25][26][27]. However, excessive Al 3+ in human body may cause damage to nucleic acids and proteins or the central nervous system [28][29][30]. Thus, it is important to detect Al 3+ with high selectivity and sensitivity, both in the environment and organisms [31,32]. As far as we are concerned, few LnMOFs display high selectivity and sensitivity for Al 3+ [33][34][35]. It is noted that Al 3+ may replace the Ln 3+ in the framework or interact with the ligands [36]. As a consequence, both ligand and Ln 3+ emissions may be interfered by Al 3+ ions. These facts impel us to realize LnMOFs ratiometric sensors for Al 3+ by the judicious choice of the organic ligand. Recently, a few works reported different fluorescence response behavior to Al 3+ ions for the emissions of the ligand and Tb 3+ ion [37,38]. In these cases, the Tb 3+ emission decreases gradually, whereas the ligand emission shows a strong enhancement as the addition of Al 3+ ions. Inspired by these cases, we aimed to synthesize LnMOFs as ratiometric luminescent sensors to detect Al 3+ ions.In this work, three Ln-MOFs, (Me 2 NH 2 )[Ln 2 L 2 (NO 3 ) 2 -(μ 3 -OH)(H 2 O)]·2H 2 O·2DMA, [Ln=Eu(1), Gd(2) and Tb (3), DMA=dimethylacetamide], were obtained based on a robust...

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Visible‐Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks

Cited by 196 publications

References 53 publications

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

Versatile bimetallic lanthanide metal-organic frameworks for tunable emission and efficient fluorescence sensing

Physical Manipulation of Lanthanide‐Activated Photoluminescence

A europium(III) metal-organic framework as ratiometric turn-on luminescent sensor for Al3+ ions

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