Post-synthetically modified metal–organic frameworks for sensing and capture of water pollutants

Mukherjee, Soumya; Dutta, Subhajit; More, Yogeshwar D.; Fajal, Sahel; Ghosh, Sujit K.

doi:10.1039/d1dt02862f

Cited by 24 publications

(21 citation statements)

References 142 publications

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“…When the neighboring lowest unoccupied molecular orbital (LUMO) (here, the conduction bond minima/CBM) of the guest molecule receives this electron, it results quenching of the electronically rich host. 62 Building on this rationale, we strived to examine electronic aspects of the MOF constituents and all studied bioanalytes to gain deeper insights into PET-induced quenching. The highest occupied molecular orbital (HOMO) (here, valence band maxima/VBM) and CBM energies of both the organic struts and amino acids were evaluated (Figures 6 and S45) using the GGA-PBE functional as implemented in VASP (see the computational details in the Supporting Information) along with dispersion corrections (Grimme's DFT-D3 method).…”

Section: ■ Results and Discussionsupporting

confidence: 69%

“…Generally, transference of electrons from the VB to the higher residing CB ensue upon excitation at a particular wavelength. When the neighboring lowest unoccupied molecular orbital (LUMO) (here, the conduction bond minima/CBM) of the guest molecule receives this electron, it results quenching of the electronically rich host . Building on this rationale, we strived to examine electronic aspects of the MOF constituents and all studied bioanalytes to gain deeper insights into PET-induced quenching.…”

Section: Results and Discussionmentioning

confidence: 99%

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Brønsted Acid-Functionalized Ionic Co(II) Framework: A Tailored Vessel for Electrocatalytic Oxygen Evolution and Size-Exclusive Optical Speciation of Biothiols

Goswami

Karthick

Das

et al. 2022

ACS Appl. Mater. Interfaces

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Metal−organic frameworks (MOFs) not only combine globally demanded renewable energy generation and environmental remediation onto a single platform but also rationalize structure−performance synergies to devise smarter materials with remarkable performance. The robust and non-interpenetrated cationic MOF exemplifies a unique bifunctional scaffold for the efficient electrochemical oxygen evolution reaction (OER) and ultrasensitive monitoring of biohazards. The microporous framework containing Brønsted acidfunctionalized [Co 2 (μ 2 -OH)(CO 2 ) 2 ] secondary building units (SBUs) exhibits remarkable OER performance in 1 M KOH, requiring 410 mV overpotential to obtain 10 mA cm −2 anodic current density, and a low Tafel slope of 55 mV/dec with 93.1% Faradaic efficiency. Apart from the high turnover frequency and electrochemically assessable surface area, steady OER performance over 500 cycles under potentiodynamic and potentiostatic conditions result in long-term catalyst durability. The highly emissive attribute from nitrogen-rich fluorescent struts benefits the MOF in recyclable and selective fluoro-detection of three biothiols (L-cysteine, homocysteine, and glutathione) in water with a fast response time. In addition to colorimetric monitoring in the solid and solution phases, control experiments validate size-exclusive biothiol speciation through molecular-dimension-mediated pore diffusion. The role of SBUs in the OER mechanism is detailed from density functional theory-derived free energy analysis, which also validates the importance of accessible N-sites in sensing via portraying framework−analyte supramolecular interactions.

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Section: ■ Results and Discussionsupporting

confidence: 69%

Section: Results and Discussionmentioning

confidence: 99%

Brønsted Acid-Functionalized Ionic Co(II) Framework: A Tailored Vessel for Electrocatalytic Oxygen Evolution and Size-Exclusive Optical Speciation of Biothiols

Goswami

Karthick

Das

et al. 2022

ACS Appl. Mater. Interfaces

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“…8 Recently, metal-organic frameworks (MOFs) have emerged as potential candidates to adsorb radioactive iodine and dyes. 9,10 The presence of a secondary building unit (SBU) affords a potential synthetic strategy to design a variety of MOFs with robust and multi-purpose properties. 11 Meanwhile, the dimension of MOFs is one of the most influen-tial parameters.…”

Section: Introductionmentioning

confidence: 99%

A bifunctionalised Pb-based MOF for iodine capture and dye removal

et al. 2023

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“…When entering the surrounding environment, they may show an important influence on human health and life quality. MOFs have been used as fluorescent probes to detect various pesticides [ 116 , 117 , 118 ]. For example, Jiao et al reported a fluorescent method for the detection of dinotefuran with Cd-MOFs, in which dinotefuran quenched the fluorescence of MOFs via the IFE and static quenching process [ 119 ].…”

Section: Chemosensorsmentioning

confidence: 99%

An Overview of the Design of Metal-Organic Frameworks-Based Fluorescent Chemosensors and Biosensors

et al. 2022

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Taking advantage of high porosity, large surface area, tunable nanostructures and ease of functionalization, metal-organic frameworks (MOFs) have been popularly applied in different fields, including adsorption and separation, heterogeneous catalysis, drug delivery, light harvesting, and chemical/biological sensing. The abundant active sites for specific recognition and adjustable optical and electrical characteristics allow for the design of various sensing platforms with MOFs as promising candidates. In this review, we systematically introduce the recent advancements of MOFs-based fluorescent chemosensors and biosensors, mainly focusing on the sensing mechanisms and analytes, including inorganic ions, small organic molecules and biomarkers (e.g., small biomolecules, nucleic acids, proteins, enzymes, and tumor cells). This review may provide valuable references for the development of novel MOFs-based sensing platforms to meet the requirements of environment monitoring and clinical diagnosis.

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Post-synthetically modified metal–organic frameworks for sensing and capture of water pollutants

Abstract: Thanks to a bottom-up Lego® design of metals and organic ligands, the library of metal-organic frameworks (MOFs) have seen a conspicuous growth. Post-synthetically modified MOFs comprise a relatively smaller subset...

Cited by 24 publications

References 142 publications

Brønsted Acid-Functionalized Ionic Co(II) Framework: A Tailored Vessel for Electrocatalytic Oxygen Evolution and Size-Exclusive Optical Speciation of Biothiols

Brønsted Acid-Functionalized Ionic Co(II) Framework: A Tailored Vessel for Electrocatalytic Oxygen Evolution and Size-Exclusive Optical Speciation of Biothiols

A bifunctionalised Pb-based MOF for iodine capture and dye removal

An Overview of the Design of Metal-Organic Frameworks-Based Fluorescent Chemosensors and Biosensors

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