Cu-PyC MOF with oxidoreductase-like catalytic activity boosting colorimetric detection of Cr(VI) on paper

Kulandaivel, Sivasankar; Lo, Wen-Chi; Lin, Chia‐Her; Yeh, Yi Chun

doi:10.1016/j.aca.2022.340335

Cited by 30 publications

(13 citation statements)

References 37 publications

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“…Although many forms of NPs including nanopillar, 35 nanostar, 36,37 and core‐shell structure, 38–40 are used in colorimetric biosensing systems, nanosphere is the most common form because of its isotropy 41,42 . NP accumulation reactions are also applied in point‐of‐care devices including lateral flow assay (LFA) and paper‐based colorimetric biosensing systems 43–47 …”

Section: Colorimetric and Fluorescence Biosensingmentioning

confidence: 99%

“…41,42 NP accumulation reactions are also applied in point-of-care devices including lateral flow assay (LFA) and paper-based colorimetric biosensing systems. [43][44][45][46][47] In order to overcome the disadvantage of the narrow analytical spectrum of colorimetric biosensors, it is an excellent extension to introduce the application of fluorescence biosensing systems. Unlike colorimetric biosensors, fluorescence biosensors reflect changes in the concentration of the analyte mainly by differences in the intensity of fluorescence-containing optical-sensing molecules, with the advantages of high sensitivity and fast real-time monitoring.…”

Section: Colorimetric and Fluorescence Biosensingmentioning

confidence: 99%

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Optical biosensing systems for a biological living body

Yan

Guo

Wang

et al. 2023

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With the development of technology, biosensors are increasingly used in the biomedical field. Due to the high sensitivity of optical signals, good stability, high signal‐to‐noise ratio, and different spectral characteristics of different analytes, optical biosensors can achieve direct and real‐time detection of analytes with high specificity compared with traditional analytical techniques. In view of the rapid development of optical biosensors for in vivo applications and their promising future, we have attempted to summarize the working principles and recent advances in application in humans, with the aim of helping readers to gain an in‐depth and detailed understanding of optical biosensors developed in recent years for applications in the biological living body. In this review, we focus on some of the current widely used and promising optical biosensors, including colorimetric biosensors, fluorescence biosensors, and surface‐enhanced‐Raman‐scattering‐based biosensors. The working principles for each type of optical biosensor are concisely described and the application of the biosensor in the living body is summarized by category. We conclude by looking at the prospects of in vivo applications of optical biosensors.

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Section: Colorimetric and Fluorescence Biosensingmentioning

confidence: 99%

Section: Colorimetric and Fluorescence Biosensingmentioning

confidence: 99%

Optical biosensing systems for a biological living body

Yan

Guo

Wang

et al. 2023

VIEW

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“…The OD-like catalytic mechanisms of MOFs have been reported in the literature, which can be divided into two possible categories, similar to the POD-like catalytic mechanisms: (i) the generation of ROS from the decomposition of molecular oxygen by catalysts, and (ii) the acceleration of the electron transfer process on the surface of the catalysts. 40 Generally speaking, some Cu-based, 45,46 Co-based, 47 and Ce-based 48–50 MOFs have been found to exhibit OD-like catalytic activity. They can directly catalyse the oxidization of substrates without the introduction of H 2 O 2 .…”

Section: Preparation and Catalytic Mechanism Of Mof-based Nanozymesmentioning

confidence: 99%

“…82 In recent years, Cu–MOFs have been used to detect Cr 6+ , such as MOF-199 75 and Cu–PyC MOF. 45 It is noteworthy that the synthesis process of the former was milder, which required only mixing and stirring at room temperature, and the prepared MOF had excellent Cr( vi )-activated OD-like catalytic properties. 75 In addition, a linear range of 0.1–30 μM was obtained with a LOD of 20 nM.…”

Section: Analytical Performances Of Mof-based Nanozymes For the Detec...mentioning

confidence: 99%

“…In another work, the Cu–PyC MOF prepared by Kulandaivel et al was applied to develop a facile and cost-effective sensor for on-site monitoring of the Cr 6+ content in diverse environmental samples. 45 This study developed a facile and cost-effective colorimetric approach for on-site monitoring of the Cr 6+ content in diverse environmental samples, and the proposed scheme enabled the detection of Cr 6+ within 3 minutes over a linear range of 0.5–50 μM with a low LOD of 0.051 μM.…”

Section: Analytical Performances Of Mof-based Nanozymes For the Detec...mentioning

confidence: 99%

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Advances in the application of metal–organic framework nanozymes in colorimetric sensing of heavy metal ions

Zhang

Liu

et al. 2023

Nanoscale

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Metal–Organic Framework Nanocomposites in Conquering Hypoxia for Tumor Therapy

Zhou,

Jia,

Wei

et al. 2024

Adv Funct Materials

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Hypoxia, as a distinctive feature of tumors, is closely related to tumor recurrence, metastasis, and treatment resistance. Metal–organic framework (MOF) exhibits an increasing number of advantages in cancer therapy owing to its porous structure, large specific surface area, and tunable function. The MOF nanocomposites constructed by adjusting components can effectively overcome tumor hypoxia and significantly enhance the anti‐tumor effect. In this review, the hypoxic characteristics of tumors and current strategies for constructing MOF nanocomposites that can overcome tumor hypoxia are summarized, including for delivering O2 or endogenously generating O2 to elevate intra‐tumor O2 content; inhibiting HIF‐1 and its induced products to alleviate tumor hypoxia; reducing cellular aerobic respiration to decrease cellular O2 consumption, and exacerbating hypoxia to improve the efficacy of hypoxia‐activated pre‐drugs. At the same time, the applications of MOF nanocomposites applied to overcome tumor hypoxia in different therapeutic methods at the present stage are described, and finally, the challenges and opportunities in further development of MOF nanocomposites are discussed.

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Cu-PyC MOF with oxidoreductase-like catalytic activity boosting colorimetric detection of Cr(VI) on paper

Cited by 30 publications

References 37 publications

Optical biosensing systems for a biological living body

Optical biosensing systems for a biological living body

Advances in the application of metal–organic framework nanozymes in colorimetric sensing of heavy metal ions

Metal–Organic Framework Nanocomposites in Conquering Hypoxia for Tumor Therapy

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