In:
Journal of the Chinese Chemical Society, Wiley, Vol. 67, No. 6 ( 2020-06), p. 1070-1077
Abstract:
A novel fluorescent probe CN3, containing 1,8‐naphthalimide and picolinate units, was synthesized, and its structure was characterized by 1 H nuclear magnetic resonance spectroscopy (H NMR), 13 C nuclear magnetic resonance spectroscopy (C NMR), and mass spectroscopy techniques. The detection property of CN3 toward copper ions (Cu 2+ ) has been investigated in ethanol–HEPES buffer (v/v = 1/1, pH = 7.40) solution by UV–Vis absorption and fluorescence emission spectra. The results showed that CN3 had a highly selective and sensitive fluorescence quenching response to Cu 2+ , which was attributed to the generation of weak fluorescent N‐ethyl‐4‐hydroxyphenyl‐1,8‐ naphthalimide (compound 2) in polar ethanol–HEPES buffer (v/v = 1/1, pH = 7.40) via selective hydrolysis reaction. The detection of CN3 for Cu 2+ was not influenced in the presence of other competing metal ions, and the limit of detection was as low as 50.0 nM. Therefore, the color of CN3 changed from colorless to yellowish when the Cu 2+ was added. Furthermore, the fluorescent probe CN3 was utilized to detect Cu 2+ in real water samples with fine performance.
Type of Medium:
Online Resource
ISSN:
0009-4536
,
2192-6549
DOI:
10.1002/jccs.201900315
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2029538-8
