An ultrasensitive and selective 'turn off' fluorescent sensor with simple operation for the determination of trace copper (II) ions in water and various beverage samples
SUPRAMOLECULAR CHEMISTRY, cilt.31, sa.12, ss.756-766, 2019 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 31 Sayı: 12
- Basım Tarihi: 2019
- Doi Numarası: 10.1080/10610278.2019.1702195
- Dergi Adı: SUPRAMOLECULAR CHEMISTRY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.756-766
- Anahtar Kelimeler: Coumarin, fluorescence sensor, copper, food samples, beverages, SOLID-PHASE EXTRACTION, COLORIMETRIC DETECTION, CARBON DOTS, METAL-IONS, CU2+, PRECONCENTRATION, CHEMOSENSOR, CU(II), SPECTROSCOPY, LUMINESCENT
- Akdeniz Üniversitesi Adresli: Evet
Özet
Considering vital roles of trace copper ions for the health of humans, it is critical to sensitively detect it in foodstuffs. Herein, an ultrasensitive and cost-effective coumarin based fluorescent strategy with a "turn-off" signal was developed for specific detection of trace Cu2+ ions. Synthesis of 6,7-dihydroxy-3-(3-methylphenyl)coumarin (TMAC) probe was performed and characterized. The developed fluorescent probe presented excellent selectivity. The limit of detection of the sensor can reach as low as 5.13 nM in ACN/H2O (v/v=95/5) buffered by 5 mu M HEPES buffer at pH = 7.0, and it is below the World Health Organization (WHO) guideline for drinking water (31.5 mu M). The probable stoichiometry of TMAC-Cu2+ complex (1:1) was determined by Job's plot method and confirmed by FT-IR and ESI-MS. We further successfully applied TMAC for Cu2+ detection in water and various beverage samples with good recovery (90.24-109.75 %).