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      Fluorophore molecule loaded in Tb-MOF for dual-channel fluorescence chemosensor for consecutive visual detection of bacterial spores and dichromate anion

      , , , ,
      Journal of Alloys and Compounds
      Elsevier BV

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          Inner filter effect-based fluorescent sensing systems: A review

          Inner filter effect (IFE) was previously considered as an error in fluorescence measurement. In recent years, it has been developed as an important non-irradiation energy conversion model of spectroscopic technique and found wide applications in the fields of chemical sensing and biosensing. In comparison with traditional techniques based on forster resonance energy transfer (FRET), the IFE-based fluorescent approach is more flexible and straightforward without the link of absorber with fluorescer. The present review for the first time introduces the state of the art in the progress of the IFE-based fluorescent sensing systems, including sensing strategy, essential conditions, materials option, and their applications for the detection of various target analytes, e.g., ionic species, small molecules, and macromolecules. In addition, the benefits and limitations of the IFE-based fluorescent sensing systems are also critically discussed and highlighted.
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            An amino-decorated dual-functional metal–organic framework for highly selective sensing of Cr(iii) and Cr(vi) ions and detection of nitroaromatic explosives

            A 3D NH 2 –Zn-MOF has been successfully constructed via a hydrothermal reaction. It exhibits high selectivity and sensitivity towards Cr( iii ), Cr( vi ) ions and nitroaromatic compounds. A 3D Zn( ii )-based metal-organic framework, [Zn 2 (TPOM)(NH 2 –BDC) 2 ]·4H 2 O (NH 2 –Zn-MOF, TPOM = tetrakis(4-pyridyloxymethylene)methane and NH 2 –BDC = 2-aminoterephthalic acid), was successfully achieved via a hydrothermal reaction. The framework adopts a (4,2)-connected 3D network, with the Schläfli symbol {6 2 ·8 4 }. This complex exhibits strong luminescence emission, which is selectively sensitive to Cr( iii ) and Cr( vi ) ions. More importantly, the fluorescence explorations indicated that it represents the first example of MOF-based fluorescent probes for detecting Cr( iii ) through a fluorescence enhancement mechanism. In addition, it also shows highly selective and sensitive detection of electron-deficient nitroaromatic compounds through fluorescence quenching. These properties make the NH 2 –Zn-MOF a potential luminescence sensor for selectively detecting these chemicals.
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              Encapsulation of Luminescent Guests to Construct Luminescent Metal–Organic Frameworks for Chemical Sensing

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                Author and article information

                Contributors
                Journal
                Journal of Alloys and Compounds
                Journal of Alloys and Compounds
                Elsevier BV
                09258388
                May 2023
                May 2023
                : 944
                : 169138
                Article
                10.1016/j.jallcom.2023.169138
                e636a941-e6de-43d0-a120-970deab56253
                © 2023

                https://www.elsevier.com/tdm/userlicense/1.0/

                https://doi.org/10.15223/policy-017

                https://doi.org/10.15223/policy-037

                https://doi.org/10.15223/policy-012

                https://doi.org/10.15223/policy-029

                https://doi.org/10.15223/policy-004

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