A novel phenolphthalein-based fluorescent sensor for Al3+ sensing in drinking water and herbal tea samples

Aydin D., Dinckan S., Elmas Ş. N., Savran T., Arslan F. N., Yilmaz I.

FOOD CHEMISTRY, cilt.337, 2021 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 337
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.foodchem.2020.127659
  • Dergi Adı: FOOD CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Food Science & Technology Abstracts, MEDLINE, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: Aluminum, Fluorescence sensor, Phenolphthalein, Drinking water, Herbal tea, HIGHLY SELECTIVE DETECTION, TURN-ON, SCHIFF-BASE, AQUEOUS-MEDIA, LIVING CELLS, CHEMOSENSOR, ION, PROBE, DIARYLETHENE, DIAMINOMALEONITRILE
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

In this study, 3,3-bis(4-hydroxy-3-((E)-((4-hydroxyphenyl)imino)methyl) phenyl)isobenzofuran-1(3H)-one (HMBP) was designed as a "turn-on" fluorogenic chemosensor to detect Al3+. Studies were performed in C2H5OH-HEPES (v/v, 9/1, pH 7.0) media at lambda(em) = 475 nm. The LOD value was found to be 0.113 mu M. The stoichiometric ratio of HMBP-Al3+ was determined as 1:2 by Job's plot and ESI-MS as well as H-1 NMR titration. The binding constant of chemosensor HMBP with Al3+ from the Benesi-Hildebrand equation was determined to be 1.21 x 10(8) M-1 . The quantum (Phi) yields were obtained as 0.040 and 0.775 for the chemosensor HMBP and HMBP-Al3+ , respectively. The response of the chemosensor HMBP towards Al3+ was attributed to the strategies of blocking the photo-induced electron transfer (PET) and C=N isomerisation mechanisms. Finally, the sensing of the chemosensor HMBP for the determination of Al3+ in real food samples, drinking waters and herbal teas, were employed.