Pyridinaldehyde modified luminescence metal-organic framework for highly sensitive and selective fluorescence detection of pyrophosphate

Ratiometric Fluorescence Assay for Pyrophosphate Based on Sulfur Nanodots Decorated Metal‐Organic Frameworks

“…The fluorescence ratiometric assay is further challenged to the direct detection of PPi in human serum samples. The concentration of PPi is measured to be 1 mM, which falls into the normal value in the serum of healthy people (0.97–1.66 mM) [1b,7] . In order to further test the accuracy of PPi analysis, standard addition experiment is carried out in the actual serum samples, and their concentrations were determined by using the calibration curve obtained in human serum samples (Figure S8).…”

“…The other is based on the difference on the binding affinity of fluorescence materials towards metal ions (Cu 2+ , Zn 2+ ) and PPi. This strategy can avoid the dependence on organic solvent, and the detection performances of these assays are highly dependent on the photophysical properties of fluorescent probes [4b,7] . Thus, it is highly preferred to design fluorescent probes with excellent photophysical properties, which can selectively recognize PPi over metal ions, with sensitive fluorescence response.…”

“…developed a fluorescence assay for PPi by using blue emissive pyridinyl‐functionalized UiO‐66‐NH 2 as probes [10] . Jia's group reported the pyridinaldehyde modified TMU‐17‐NH 2 as fluorescence probes for the detection of PPi [7] . However, the fluorescence color of these MOF was limited in the blue region, and these assays were single fluorescence signal responsive, which were susceptible to various interferences, such as instrument or operation errors, and environmental fluctuations.…”

Rhodamine B functionalized luminescent metal–organic frameworks for ratiometric fluorescence sensing of hydroquinone

“…Fluorescence methods have obvious advantages due to their simplicity, low cost, high speed, and high sensitivity. 26,27 So far, fluorescence sensing materials such as carbon quantum dots, 25 polymers, 28 and silicon nanoparticles 29 have been designed for the fluorescence detection of HQ. For instance, graphite phase carbon nitride quantum dots realize the fluorescence detection of HQ through enzymatic reactions and exhibit environmental friendliness and high sensitivity.…”

Post-synthesis functionalization of ZIF-90 with sulfonate groups for high proton conduction

“…; (2) the pores of MOFs must be large enough to enable the reactants and the products readily accessible in and out of the channels. Currently, reactions commonly used for covalent PSM are Schiff-base condensation 12 and amide condensation reaction, 13 et al In addition, some uncommon chemical reactions can be used for covalent PSM. Recently, Das et al utilized the amino group on UiO-66-NH 2 to undergo a ring-opening reaction with sultone to introduce –SO 3 H into the framework to improve the proton conductivity of MOF.…”