A metal–organic framework composite loaded with coumarin guests as a turn-on luminescent sensor for detection of cysteine in aqueous solution

  • Xi Xi Wang
  • , Rui Peng Liu
  • , Ai Ling Cheng*
  • , Qing Song Xue
  • , En Qing Gao
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, a composite material (ACE@UiO-66-NH2) has been synthesized conveniently by loading a cysteine-responsive molecular probe Acrylic acid 3-acetyl-2-oxo-2H-chromen-7-yl ester (ACE) on a UiO-type zirconium-based metal–organic framework (UiO-66-NH2). Furthermore, the resulting ACE@UiO-66-NH2 demonstrated to be a fluorescent turn-on probe for selective recognition of Cys from other amino acids in aqueous HEPES buffer systems. Additionally, the proposed recognition mechanism has been confirmed by 1H NMR and TLC. The study provided a promising approach to rationally design MOF-based fluorescent sensor for Cys in aqueous system.

Original languageEnglish
Article number117190
JournalPolyhedron
Volume263
DOIs
StatePublished - 15 Nov 2024

Keywords

  • Aqueous
  • Coumarin
  • Cysteine
  • Luminescent sensor
  • Zr-MOF

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