Pyrophosphate Selective Recognition in Aqueous Solution Based on Fluorescence Enhancement of a New Aluminium Complex |
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| Authors: | Morteza Hosseini Mohammad Reza Ganjali Mehdi Tavakoli Parviz Norouzi Farnoush Faridbod Hassan Goldooz Alireza Badiei |
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| Institution: | (1) Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran;(2) Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran;(3) Endocrinology & Metabolism Research Center, Tehran University of Medical Sciences, Tehran, Iran;(4) Department of Chemistry, University of Tarbiat Modares, Tehran, Iran;(5) School of Chemistry, University College of Science, University of Tehran, Tehran, Iran |
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| Abstract: | A novel and simple fluorescence enhancement method for selective pyrophosphate(PPi) sensing was proposed based on a 1:1 metal
complex formation between bis(8-hydroxy quinoline-5-solphonat) chloride aluminum(III) (Al(QS)2Cl), (L) and PPi in aqueous solution. The linear response range covers a concentration range of 1.6 × 10−7 to 1.0 × 10−5 mol/L of PPi and the detection limit of 2.3 × 10−8 mol/L. The association constant of L-PPi complex was calculated 2.6 × 105 L/mol. L was found to show selectively and sensitively fluorescence enhancement toward PPi over than I3-, NO3-, CN−, CO32−, Br−, Cl−, F−, H2PO4− and SO42−, which was attributed to higher stability of inorganic complex between pyrophosphate and L. |
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