Characterization of a highly Al3+‐selective fluorescence probe based on naphthalimide‐Schiff base and its application to practical water samples. (18th July 2017)

• Record Type: Journal Article
• Authors: Shen, Kesheng; Mao, Shanshan; Shi, Xinkui; Wang, Fei; Xu, Yuling; Aderinto, Stephen Opeyemi; Wu, Huilu
• Is Part Of: Luminescence. Volume 33:Number 1(2018)
• Page Start: 54
• Page End: 63
• Publication Date: 2017-07-18
• Subjects: aluminium -- fluorescence probe -- naphthalimide -- recognition -- Schiff base; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.3372
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: A new fluorescent Al 3+ ‐probe, N ‐allyl‐4‐[3, 3′‐((2‐aminoethyl)azanediyl)‐bis( N ´‐(2‐hydroxybenzylidene)propanehy‐drazide)]‐1, 8‐naphthalimide (L ), was designed and synthesized based on 1, 8‐naphthalimide. The probeL contains 1, 8‐naphthalimide moiety as the fluorophore and a Schiff base as the recognition group. The structure ofL was determined by single crystal X‐ray.L emission at 526 nm increased on addition of Al 3+ under excitation wavelength at 350 nm.L exhibited high selectivity and sensitivity fluorescence emission towards to Al 3+ in ethanol/Tris–HCl buffer solution (1:1, v /v, pH = 7.2) as compared with other tested metal ions. A good linearity with a correlation coefficient (R 2 ) of 0.99 was observed in the concentration range 2–10 μM. The binding constant and the detection limit ofL for Al 3+ were calculated to 2.6 × 10 4 M −1 and 0.34 μM, respectively. The results of experiments that including Job plot, ultraviolet–visible (UV–Vis) light titration, fluorescence titration, ESI‐MS and 1 H NMR titration, indicated a 1:1 stoichiometric complex betweenL and Al 3+ .L was highly effective in monitoring Al 3+ in real‐life Yellow River and tap water samples.