Water-ratio directed selective turn-on fluorescence detection of copper and mercury in acetonitrile

TOPRAK M., Lafzi F., BAYINDIR S.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, cilt.418, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 418
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.jphotochem.2021.113418
  • Dergi Adı: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Chemical Abstracts Core, Chimica, INSPEC
  • Anahtar Kelimeler: Tetraphenylethene (TPE), Thiosemicarbazones (TSC), Turn-On Fluorescence Detection, Copper and Mercury sensing, REVERSIBLE DETECTION, AQUEOUS-SOLUTION, CU2+ IONS, SENSOR, HG2+, CHEMOSENSOR, COORDINATION, DIARYLETHENE, RECOGNITION, DERIVATIVES
  • Atatürk Üniversitesi Adresli: Hayır

Özet

The development of novel sensor probes to sensitively and selectively detect more than one target ion in a given condition is a challenging duty due to the deficiency of effective design strategies. In this study, we report utilizing the water-ratio-directed properties of a TPE-TSC-based turn-on fluorescent selective detection of multiple ions by using acetonitrile and acetonitrile-water. When pure acetonitrile was used as the solvent, TPE-TSC was not showed a selective and sensitive effect for any ions. Thereupon, studies were carried out in aqueous solutions of acetonitrile. As a result of studies, TPE-TSC was showed a selective and sensitive fluorescence "turn on" response towards Cu2+ and Hg2+ in CH3CN/H2O (30-50% of water for Cu2+, 70-90% of water for Hg2+). When an aqueous solution of acetonitrile (CH3CN/H2O; v/v:1/1) was used, the TPE-TSC was determined to be a sensitive and selective fluorescent "turn on" sensing for Cu2+ with a LOD value of 15.74 mu M, which is the range of copper that should be in the blood (11.8-23.6 mu M). In addition, when the studies were carried out in CH3CN/H2O (v/v:1/9), TPE-TSC was further determined to be a turn-on fluorescent sensing for Hg2+ with a LOD value of 18 mu M. Moreover, DFT calculations confirmed the nonplanar or propeller structures. As a result of all these studies, it can be said that TPE-TSC, may be a useful and water-ratio-directed selective turn-on sensor candidate for Cu2+ and Hg2+ sensing in industrial wastewaters.