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High Sensitivity and Selectivity of Aminoantipyrine Schiff Base for the Recognition of Fe2+
Author NameAffiliationE-mail
CHEN Sheng-Tian School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China 		 
ZHANG Yu Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China yuzhang@hytc.edu.cn 
ZHAO Jian-Ying Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China zhaojy008@hytc.edu.cn 
MA Kui-Rong Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China  
LI Rong-Qing Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China  
TANG Guo-Dong Huaian Key Laboratory for Photoelectric Conversion and Energy Storage Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai′an, Jiangsu 223300, China  
Abstract: An aminoantipyrine based chemosensor, (E)-1,5-dimethyl-4-((2-(4-methylpyridin-2-yl)pyridin-4-yl)methyleneamino)-2-phenyl-1,2-dihydropyrazol-3-one(L), derived from 4-aminoantipyrine and 2-(4-methylpyridin-2-yl) isonicotinaldehyde, was synthesized and the optical and metal sensing properties were investigated. The chemosensor L showed a selective colorimetric sensing ability for Fe2+ by changing colors from pale yellow to deep red in water-ethanol (9:1, V/V) medium, which facilitates the ‘naked-eye’ recognition of Fe2+ from other examined metal ions. The complex stoichiometry of Fe2+ to L(1:3,[FeL3]2+) was obtained by Job's method. The association constant was determined to be 3.70×1021 L3·mol-3. The present results indicate that the chemosensor L could be used as a selective, sensitive colorimetric sensor for Fe2+.
Keywords: Schiff base receptor  chemosensor for Fe2+  spectral characterization
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CHEN Sheng-Tian,ZHANG Yu,ZHAO Jian-Ying,MA Kui-Rong,LI Rong-Qing,TANG Guo-Dong.High Sensitivity and Selectivity of Aminoantipyrine Schiff Base for the Recognition of Fe2+[J].Chinese Journal of Inorganic Chemistry,2019,35(4):737-744.
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Chinese Journal of Inorganic Chemistry