Novel triphenylamine-connected indolinium fluorescence sensor for detection of the cyanide anion and DFT calculations

Dalkilic O., Lafzi F., KILIÇ H., SARAÇOĞLU N.

TETRAHEDRON LETTERS, cilt.61, sa.37, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 61 Sayı: 37
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.tetlet.2020.152315
  • Dergi Adı: TETRAHEDRON LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chimica, EMBASE, Veterinary Science Database, Index Chemicus (IC)
  • Ankara Üniversitesi Adresli: Hayır

Özet

A new triphenylamine based probe (TPA) for detection of the cyanide anion (CN) was designed and synthesized. In aqueous solution, TPA showed rapid fluorescence response and excellent selectivity for CN ions, and other anions did not affect the detection process. The probe displays a detection limit of 1.17 mu M which is lower than the threshold (1.9 mu M) regulated by the World Health Organization (WHO) for CN ions in aqueous solution. The sensitivity and photophysical properties of TPA were investigated using UV-Vis spectrophotometry, fluorescence spectrofluorometry, and H-1 NMR titration techniques. Density functional theory (DFT) calculations were carried out to better understand the relationship between the photophysical properties and the electronic structures of TPA and TPA-CN. (C) 2020 Elsevier Ltd. All rights reserved.