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Vol. 25 No. 11 (2013): Vol 25 Issue 11

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Highly Selective and Sensitive Detection of Fe3+ by 1,8-Naphthalimide-Based Fluorescent Sensors

https://doi.org/10.14233/ajchem.2013.14344
Shuping Wang
College of Chemistry, Chemical Engineering and Materials Science, National Engineering Laboratory for Modern Silk, Key Laboratory of Organic Synthesis of Jiangsu Province, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu 215123, P.R. China
Dongmei Xu
College of Chemistry, Chemical Engineering and Materials Science, National Engineering Laboratory for Modern Silk, Key Laboratory of Organic Synthesis of Jiangsu Province, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Soochow University, Suzhou, Jiangsu 215123, P.R. China

Corresponding Author(s) : Dongmei Xu

xdm.sd@163.com

Asian Journal of Chemistry, Vol. 25 No. 11 (2013): Vol 25 Issue 11

Abstract

Highly selective and sensitive detection of Fe3+ by two 1,8-naphthalimide-based fluorescent sensors, 2-(2-(dimethylamino)ethyl)-6-((2-(dimethylamino)ethyl)-amino)-1H-benzo[ de]isoquinoline-1,3(2H)-dione (MMN) and 2-(2-(diethylamino)ethyl)-6-((2-(diethylamino)-ethyl)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione (EEN) in N,N-dimethyl formamide is reported. The fluorescence intensity of MMN and EEN is greatly enhanced by Fe3+ ion with the response time of less than 1s. The maximum fluorescence intensity of the sensors is linearly dependent on the concentration of Fe3+ within the range of 10-100 μM. The binding stoichiometry indicates that a 2:1 complex is formed between Fe3+ and the sensor and the detection limits for MMN and EEN are 180 and 310 nM, respectively. A large number of biologically relevant ions show no obvious interferences with the detection.

Keywords

Sensors Fluorescent sensors Fluorescence sensors 1,8-Naphthalimide Fe 3
Wang, S., & Xu, D. (2013). Highly Selective and Sensitive Detection of Fe3+ by 1,8-Naphthalimide-Based Fluorescent Sensors. Asian Journal of Chemistry, 25(11), 6259–6262. https://doi.org/10.14233/ajchem.2013.14344
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