A coumarin-pyrazolone based fluorescent probe for selective colorimetric and fluorimetric fluoride detection: Synthesis, spectroscopic properties and DFT calculations

Babur B., SEFEROĞLU N., SEFEROĞLU Z.

JOURNAL OF MOLECULAR STRUCTURE, cilt.1161, ss.218-225, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1161
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.molstruc.2018.01.076
  • Dergi Adı: JOURNAL OF MOLECULAR STRUCTURE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.218-225
  • Anahtar Kelimeler: Coumarin, Pyrazolone, Fluorescence chemosensor, Selective fluoride detection, DFT, ANION RECOGNITION, PROTON-TRANSFER, NAKED-EYE, RECEPTORS, CHEMOSENSOR, SENSORS, DENSITY, WATER, CO2+, PET
  • Gazi Üniversitesi Adresli: Evet

Özet

A novel coumarin based fluorescence anion chemosensor (P-1) bearing pyrazolone as a receptoric part was synthesized and characterized by using FT-IR, H-1/C-13 NMR and HRMS for the purpose of recognition of anions in DMSO. P-1 has four tautomeric structures and the most stable tautomeric form of P-1 was determined experimentally and theoretically. The chemosensor P-1 consists two receptoric parts as free amide N-H and enamine N-H which is stabilized intramolecular H-bonding with coumarin carbonyl oxygen. P-1 interacts selectively with fluoride anion via amide N-H. The selectivity and sensitivity of probe to various anions were determined with spectrophotometric and H-1 NMR titration techniques as experimentally and all results were also explained by theoretical calculations. (C) 2018 Elsevier B.V. All rights reserved.