9-Anthracenecarboxamide fluorescent probes for selective discrimination of picric acid from mono- and di-nitrophenols in ethanol

Anup Pandith, Ashwani Kumar, Ju Young Lee, Hong Seok Kim

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A new class of 'switch off' anthracenecarboxamide-based sensing probes (1-3) for the detection of picric acid (PA) was designed and synthesized. Probe 1 exhibited the highest sensitivity and selectivity toward PA, enabling complete fluorescence quenching and exhibiting a high association constant (4.14 × 105 M-1) with a 1:1 stoichiometric ratio of 1 to PA in EtOH. Probe 1 was able to detect PA through multiple synergic interactions such as hydrogen bonding, π-π interactions between the electron-rich aromatic rings of anthracene and the electron-deficient aromatic ring of PA that resulted in a favorable fluorescence resonance energy transfer from the latter to the former. The ability of probe 1 to sense PA was investigated by UV-visible, fluorescence, and 1H NMR spectroscopies, as well as DFT calculations.

Original languageEnglish
Pages (from-to)7094-7099
Number of pages6
JournalTetrahedron Letters
Volume56
Issue number51
DOIs
Publication statusPublished - Dec 23 2015
Externally publishedYes

Keywords

  • 9-Anthracenecarboxamide
  • Energy transfer
  • Multiple hydrogen bonding
  • Picric acid
  • Switch-off

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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