Naked-eye colorimetric and switch-on fluorescence chemosensor based on a rhodamine derivative for Hg2+: Smartphone device, test-kit and food sample applications

Genc H. N., Guctekin Yasar O., KARUK ELMAS Ş. N., Arslan F. N., Yilmaz I., Sirit A.

Journal of Photochemistry and Photobiology A: Chemistry, cilt.438, 2023 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 438
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.jphotochem.2023.114558
  • 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: Colorimetric, Fluorescence, Mercury, Rhodamine, Smartphone
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

A new rhodamine-based switch-on fluorescent and colorimetric chemosensor (RHEN) was fabricated for the determination of Hg2+. The RHEN showed a noticeable colorimetric response for Hg2+ from ''colorless'' to ''pink'' under daylight. When exposed to Hg2+, the fluorescence at 582 nm from the probe RHEN was remarkably enhanced, attend by a color change from ''colorless'' to ''dusty rose color'' under 365 nm UV lamp. The RHEN had a notable specificity and selectivity for Hg2+ and depicted an excellent sensing performance for detecting lowly concentrated Hg2+ (LOD; 0.11 µM). The binding phenomenon between RHEN and Hg2+ was identified by Job's method, MALDI TOF-MS and FT-IR spectroscopy. Moreover, the fabricated chemoprobe RHEN was not only utilized to identify Hg2+ in fish samples with satisfactory results (95.28–111.66 %) but also was successfully used for test-paper and cotton swab applications. Smartphone application also showed that RHEN could be used as a potent tool for on-site sensing of Hg2+ without the need for complicated device.