Metal–organic frameworks as photoluminescent biosensing platforms: mechanisms and applications

Zhao, Yifang; Zeng, Heng; Zhu, Xiaowei; Lü, Weigang; Li, Dan

doi:10.1039/d0cs00955e

Cited by 445 publications

(240 citation statements)

References 209 publications

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“…The Ni(II) and Co(II) compounds show intense d‐d absorption bands above 600 nm and in 450–650 nm, respectively (Figure S8). The absorptions overlap well with the emission bands (590–628 nm) observed for the Zn(II) and Cd(II) compounds (Figure S12), so efficient energy transfer from excited interligand CT complexes to non‐emissive metal chromophores can occur in the Ni(II) and Co(II) compounds [2d,19] …”

Section: Resultsmentioning

confidence: 54%

Metal‐Organic Frameworks with Novel Catenane‐like Interlocking: Metal‐Determined Photoresponse and Uranyl Sensing

Guo

Yang

et al. 2021

Chemistry A European J

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The assembly of two tripyridinium‐tricarboxylate ligands and different metal ions leads to seven isostructural MOFs, which show novel 2D→2D supramolecular entanglement featuring catenane‐like interlocking of tricyclic cages. The MOFs show tripyridinium‐afforded and metal‐modulated photoresponsive properties. The MOFs with d10 metal centers (1‐Cd, 1‐Zn, 2‐Cd, 2‐Zn) show fast and reversible photochromism and concomitant fluorescence quenching, 1‐Ni displays slower photochromism but does not fluoresce, and 1‐Co and 2‐Co are neither photochromic nor fluorescent. It is shown here that the network entanglement dictates donor‐acceptor close contacts, which enable fluorescence originated from interligand charge transfer. The contacts also allow photoinduced electron transfer, which underlies photochromism and concomitant fluorescence response. The metal dependence in fluorescence and photochromism can be related to energy transfer through metal‐centered d‐d transitions. In addition, 1‐Cd is demonstrated to be a potential fluorescence sensor for sensitive and selective detection of UO22+ in water.

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Section: Resultsmentioning

confidence: 54%

Metal‐Organic Frameworks with Novel Catenane‐like Interlocking: Metal‐Determined Photoresponse and Uranyl Sensing

Guo

Yang

et al. 2021

Chemistry A European J

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“…Rapid industrial developments and modern lifestyle have affected human health, for which people pay more attention to the dynamics of their physical condition ( Pettinari et al, 2021 ). The observation of biological activities, the acquisition of biological information, and the discovery of life systems have fueled the development of biotechnologies, particularly biosensors ( Zhao et al, 2021 ). Biological signals that are difficult to perceive are converted to readable data using optics ( Sun et al, 2021a ), photothermal ( Zhou et al, 2020a ), electrochemistry ( Zhang et al, 2021b ), electrochemiluminescence ( Zhang et al, 2020 ), and other technologies.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Metal-Organic Framework-Based Electrochemical Biosensing Applications

Li¹,

Zhang²,

Boakye³

et al. 2021

Front. Bioeng. Biotechnol.

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In the face of complex environments, considerable effort has been made to accomplish sensitive, accurate and highly-effective detection of target analytes. Given the versatility of metal clusters and ligands, high porosity and large specific surface area, metal–organic framework (MOF) provides researchers with prospective solutions for the construction of biosensing platforms. Combined with the benefits of electrochemistry method such as fast response, low cost and simple operation, the untapped applications of MOF for biosensors are worthy to be exploited. Therefore, this review briefly summarizes the preparation methods of electroactive MOF, including synthesize with electroactive ligands/metal ions, functionalization of MOF with biomolecules and modification for MOF composites. Moreover, recent biosensing applications are highlighted in terms of small biomolecules, biomacromolecules, and pathogenic cells. We conclude with a discussion of future challenges and prospects in the field. It aims to offer researchers inspiration to address the issues appropriately in further investigations.

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“…The absorption at 336 nm by p-diaminobenzene is approximately 33 times that of o-diaminobenzene (Figures 3b and S16b ). [42] The overlap integral area of EuTb@NKU-102 and p-diaminobenzene is approximately 35 times that of o-diaminobenzene (Figure 3b). Hence, the quenching of EuTb@NKU-102 based on the FRET mechanism follows the same order as the CA mechanism.…”

Section: Figure 2 | (A) Visual Luminescent Responds Of Eutb@nku-102 T...mentioning

confidence: 98%

A Multicenter Metal–Organic Framework for Quantitative Detection of Multicomponent Organic Mixtures

et al. 2022

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Instant recognition and quantification of multi-component organic mixtures, especially the ones with similar characteristics, remains a key challenge in the chemical industry. Although luminescence sensing is considered a rapid and facile method for the detection of various chemical substances, the simultaneous and quantitative detection of three or more components has not yet been achieved. Herein, we report a rationally designed white-light-emitting metal-organic framework (MOF) EuTb@NKU-102, and demonstrate its application in the simultaneous discrimination of multicomponent organic mixtures. The concentration of each component in the mixture can be obtained based on the correlation of the emission intensity changes in 10 s, enabling instant and quantitative analysis. The sensing mechanism of this complex system was studied in detail. This study paves the way for the rapid detection of multi-component mixtures using MOF-based luminescent material with multi-emission centers.

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Metal–organic frameworks as photoluminescent biosensing platforms: mechanisms and applications

Abstract: Recent progress of MOF-based photoluminescent platforms: a comprehensive overview of their applications in biosensing and underlying mechanisms.

Cited by 445 publications

References 209 publications

Metal‐Organic Frameworks with Novel Catenane‐like Interlocking: Metal‐Determined Photoresponse and Uranyl Sensing

Metal‐Organic Frameworks with Novel Catenane‐like Interlocking: Metal‐Determined Photoresponse and Uranyl Sensing

Recent Advances in Metal-Organic Framework-Based Electrochemical Biosensing Applications

A Multicenter Metal–Organic Framework for Quantitative Detection of Multicomponent Organic Mixtures

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