Development of a New 4-Amino-1,8-Naphthalimide Derivative as a Fluorescent Probe for Monitoring the Divalent Copper Ion

Journal Article · Sat Sep 15 04:00:00 EDT 2018 · Journal of Applied Spectroscopy

DOI:https://doi.org/10.1007/S10812-018-0702-9· OSTI ID:22809899

Shen, Kesheng; Mao, Shanshan; Shi, Xinkui; Aderinto, Stephen Opeyemi; Xu, Yuling; Wu, Huilu ^[1]

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1. Lanzhou Jiaotong University, School of Chemical and Biological Engineering (China)

This article presents the design and synthesis of a new variant of the 4-amino-1,8-naphthalimide fluorescent probe for monitoring the divalent copper ion, Cu{sup 2+}. The probe BRST, functionalized with two propionic carboxylic acid groups in its receptor moiety, demonstrated high selectivity and sensitivity for the detection of Cu{sup 2+} in competitive media of various metal ions in DMSO/HEPES buffer solution (1:1; pH 7.4), with a fluorescence quenching of 75.41%. Besides its good linearity with Cu{sup 2+}, the probe yielded commendable values of the association constant and the detection limit, 5.54 × 10{sup 5} M{sup –1} and 4.33 × 10{sup –9} M, respectively. The quenching of the fluorescence intensity of the sensor in the presence of Cu{sup 2+} ions is attributable to the strong paramagnetic nature of the Cu{sup 2+} ion. The fluorescence 'turn off' behavior of this simple and effective probe was successfully applied for the determination of Cu{sup 2+} levels in untreated water samples, with excellent recovery rates of 98–105.8%.

• OSTI ID: 22809899
• Journal Information: Journal of Applied Spectroscopy, Journal Name: Journal of Applied Spectroscopy Journal Issue: 4 Vol. 85; ISSN 0021-9037
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CARBOXYLIC ACIDS
COPPER IONS
FLUORESCENCE
PARAMAGNETISM
PH VALUE
QUENCHING
SENSITIVITY
SOLUTIONS
SYNTHESIS