Fluorescent determination of zinc by a quinoline-based chemosensor in aqueous media and zebrafish

Ju Byeong Chae, Dongju Yun, Sehoon Kim, Hyojin Lee, Mingeun Kim, Mi Hee Lim, Ki Tae Kim, Cheal Kim

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

A quinoline-based fluorescence sensor QDTD was developed for Zn 2+ . QDTD can detect Zn 2+ by fluorescence turn-on. Detecting limit (0.27 μM) of QDTD for Zn 2+ was far below WHO standard (76.0 μM). For the practical application, compound QDTD could be used to determine Zn 2+ in real samples and applied to the test kit. More importantly, QDTD was expertly applied for Zn 2+ imaging in HeLa cells and zebrafish with good membrane-permeability. Detection mechanism of Zn 2+ ion by compound QDTD was suggested through the analytical tools like 1 H NMR titration, ESI-MS, Job plot, fluorescent and UV–vis titration, and theoretical calculations, and through the synthesis and applications of a model compound AAQA.

Original languageEnglish
Pages (from-to)74-82
Number of pages9
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume219
DOIs
StatePublished - 5 Aug 2019

Keywords

  • Fluorescence chemosensor
  • Theoretical calculations
  • Zebrafish
  • Zinc ion

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