A stable nanoscaled Zr-MOF for the detection of toxic mycotoxin through a pH-modulated ratiometric luminescent switch

Chem Commun (Camb). 2020 May 19;56(40):5389-5392. doi: 10.1039/d0cc01006e.

Abstract

A stable nanoscaled single-excitation ratiometric luminescent pH sensor (MPDB-PCN) over a broad pH range from 2.5 to 8.6 is fabricated through post-synthetic modification of PCN-224 with naphthalimide-derived molecules. Due to the rapid, sensitive and linear response to pH, MPDB-PCN is capable of detecting 3-nitropropionic acid (3-NPA), an acid neurotoxin in food safety, with a low detection limit of 15 μM in sugarcane juice.

MeSH terms

  • Food Contamination / analysis
  • Hydrogen-Ion Concentration
  • Limit of Detection
  • Luminescent Agents / chemistry*
  • Metal-Organic Frameworks / chemistry*
  • Mycotoxins / analysis*
  • Nanoparticles / chemistry*
  • Neurotoxins / analysis
  • Nitro Compounds / analysis
  • Plant Extracts / analysis
  • Propionates / analysis
  • Saccharum / chemistry
  • Spectrometry, Fluorescence / methods
  • Zirconium / chemistry

Substances

  • Luminescent Agents
  • Metal-Organic Frameworks
  • Mycotoxins
  • Neurotoxins
  • Nitro Compounds
  • Plant Extracts
  • Propionates
  • Zirconium
  • 3-nitropropionic acid