A longitudinally expanded Ni-based metal–organic framework with enhanced double nickel cation catalysis reaction channels for a non-enzymatic sweat glucose biosensor

Abstract

Nickel-based metal-organic frameworks (Ni-MOFs) have attracted increasing attention in non-enzymatic glucose sensing. However, the insufficient active Ni cation sites from stacked MOF layer, the unclear Ni catalysis mechanism, and the...

Glucose Detection Devices and Methods Based on Metal–Organic Frameworks and Related Materials

“…developed a flexible carbon fiber electrode modified with a Ni‐MOF for the enzymeless electrochemical detection of glucose in sweat (Figure 14b). [ 192 ] The as‐prepared Ni‐MOF exhibited longitudinal expansion leading to an increase of the number of active sites of Ni ions, which enhanced the sensitivity of glucose detection. This Ni‐MOF‐based flexible sensor with a PVA/NaOH solid‐state electrolyte was employed to detect glucose in sweat in the concentration range from 0 to 1600 × 10 −6 m with a sensitivity of 470.40 µA cm −2 /× 10 −3 m .…”

“…The system was very stable and sensitive for up to two months under ambient conditions, working over a concentration range varying from 10 × 10 −6 to 1000 × 10 −6 m. In another article, Xuan et al developed a flexible carbon fiber electrode modified with a Ni-MOF for the enzymeless electrochemical detection of glucose in sweat (Figure 14b). [192] The as-prepared Ni-MOF exhibited longitudinal expansion leading to an increase of the number of active sites of Ni ions, which enhanced the sensitivity of glucose detection. This Ni-MOF-based flexible sensor with a PVA/NaOH solidstate electrolyte was employed to detect glucose in sweat in the concentration range from 0 to 1600 × 10 −6 m with a sensitivity of 470.40 µA cm −2 /× 10 −3 m. Another flexible platform was developed by Wei et al by depositing conducting leaflike Co-MOF onto a flexible carbon cloth (CC) for the electrocatalytic oxidation of glucose in an alkaline medium.…”

“…Reproduced with permission. [ 192 ] Copyright 2020, Royal Society of Chemistry. c) Schematic illustration of the GO x /ZIF‐8 modified cellulose acetate nanofiber membrane‐based self‐powered glucose biosensor.…”

The revelation of glucose adsorption mechanisms on hierarchical metal–organic frameworks using a surface plasmon resonance sensor

“…15 Metal oxides, metal hydroxides, and MOFs have been previously employed in non-enzymatic glucose detection. [19][20][21][22][23][24][25] MOFs can increase the bonding interactions with the analyte and serve as active sites to drive electrocatalytic reactions. Host-guest interactions because of Lewis acid or base sites in ligands, open metal sites, hydrophobic interactions, and aromatic groups in MOFs can be utilized to increase the selectivity towards the target analyte.…”

Five Lanthanide-Based Metal–Organic Frameworks Built from a π-Conjugated Ligand with Isophthalate Units Featuring Sensitive Fluorescent Sensing for DMF and Acetone Molecules

“…In fact, various detection methods have been explored for harmful substances, such as luminescent chemosensors, chromatography, and atomic absorption spectrometry. Compared with other traditional methods, chemical probes built on luminescent metal–organic frameworks (LMOFs) have attracted extensive attention due to their advantages of fast response and facile operation. − During the last few decades, large amounts of LMOFs for sensitive detection have been developed for multiple analytes. − What is noteworthy is that metal–organic frameworks centered around Ln­(III) (Ln-MOFs), especially Eu 3+ and Tb 3+ compounds, possessing significant merits including large Stokes shift, long lifetimes, high quantum yields, and strong characteristic emission, have been regarded as potential luminescent probes. − …”