Chemodosimetric discriminative analysis of cyanide, ammonia, aliphatic amine, and hydrazine utilizing the diverse reaction types of the pyrylium salt

Teknikel E.

Journal of Molecular Structure, cilt.1298, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1298
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.molstruc.2023.137015
  • Dergi Adı: Journal of Molecular Structure
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Anahtar Kelimeler: Amine, Ammonia, Chemosensor, Cyanide, Hydrazine, Pyrylium
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Pyrylium salts are well known to react with different nucleophiles to form many different types of products like pyridinium salt, pyridine, cyanodienone, thiopyrylium, isoxazoline, N-aminopyridinium salt or 1,2-diazepine, depending on the nucleophile used. This property of pyrylium salts could be used to develop a multi-analyte chemosensor for the species having nucleophilic character. On this idea, we synthesized a pyrylium compound (PyrSen) bearing auxochromes and studied its photophysical responses to different nucleophiles. Different absorption spectra were observed to emerge upon the separate addition of cyanide, propylamine, ammonia, and hydrazine to the aqueous solution of PyrSen (ethanol-water 5:1). In the solutions containing ammonia and hydrazine were also observed fluorescence at different wavelengths. The products responsible for these photophysical properties were isolated and characterized. The developed sensor was proved to be usable for the discrimination and quantification of these four species in aqueous solutions.