A Pyrene-Tetrazole Fused Fluorescent Probe for Effective Real Time Detection Towards Aluminium Ion

• Published in: Journal of fluorescence Vol. 32; no. 5; pp. 1703 - 1712
• Main Authors: Manivannan, Ramalingam, Son, Young-A
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2022; Springer Nature B.V
• Subjects: Aluminum; Analytical Chemistry; Binding sites; Biochemistry; Biological and Medical Physics; Biomedical and Life Sciences; Biomedicine; Biophysics; Biotechnology; Chemical synthesis; Color; Colorimetry; Fluorescent indicators; Metal ions; Molecular structure; Real time; Selectivity; Spectrum analysis; Tetrazoles; Water purification; Test kit; Pyrene-Tetrazole; Aluminium ion; Fluorescence; Color change; Turn-on Fluorescence
• ISSN: 1053-0509; 1573-4994
• DOI: 10.1007/s10895-022-02985-4

We constructed a novel-binding site for metal ion detection using a fused tetrazole ring conjugated with aminopyrene ( R ). The designed structure of the molecule was successfully synthesized and determined the probe's selectivity by testing various metal ions and found that the probe effectively detects Al 3+ ion visually. Checked the sensing ability of the probe with different approaches (fluorimetric and colorimetric), and the effectiveness is double confirmed. The added Al 3+ ion to R procured a rapid change in color from yellowish orange to colorless. Under the UV lamp, a turn-on blue fluorescence was observed after adding aluminium ion, whereas the probe was non-fluorescent before detecting aluminium ion. The probable interface of the probe with aluminium ion has also been expected from HRMS spectral analysis results. The probe's utility in real-time monitoring of Al 3+ ion in water is confirmed by a simple test kit prepared using filter paper. The kit showed a possible naked-eye detection with a notable color change, and when checked, the aluminium ion detected test kit under a UV lamp showed blue fluorescence.