Akademik Veri Yönetim Sistemi
JOURNAL OF FLUORESCENCE, cilt.32, sa.4, ss.1357-1367, 2022 (SCI-Expanded, Scopus)
A propylimidazole functionalized coumarin derivative (IPC) was fabricated for the first time and applied as a dual responsive fluorescent chemoprobe for sensitive and selective recognition of picric acid (PA) and Fe3+. Strong fluorescence quenching phenomena of the IPC were observed in H2O/ACN (5/95, v/v) medium (lambda(em)=408 nm) upon the additions of Fe(3+)or PA. The fabricated dual responsive IPC offered good selectivity and sensitivity with the low limit of detection values (0.92 mu M for PA and 0.22 mu M for Fe3+) lower than the acceptable amounts of Fe3+ and PA by the international official authorities. The validation study for the chemoprobe IPC for PA and Fe3+ was also performed. The interaction phenomena of IPC with PA and Fe3+ based on the findings of a range of experiments were considered and DFT computations were done to verify their recognition mechanisms. The sensing phenomena of IPC towards PA (1:1) and Fe3+ (3:1) were confirmed by the MALDI TOF-MS, FT-IR, H-1-NMR titration and Job's methods. Furthermore, the compound IPC was effectively applied as a fluorescent sensor for Fe3+ and PA detection in real natural spring water samples.