Journal of Sol-Gel Science and Technology

, Volume 81, Issue 2, pp 534–543 | Cite as

Synthesis and characterization of quinoline-derivated fluorescent sol–gel-imprinted polymer as a chemosensor for sensing of uranyl ion

Original Paper: Sol-gel and hybrid materials for catalytic, photoelectrochemical and sensor applications


In this work, chemosensor that contains 3-aminoquinoline derivative of silane coupling agent grafted to the sol–gel polymer has been synthesized and characterized for determination of the uranyl, \(UO_2^{2 + }\)ion. The quinoline-based fluorescence probe was covalently anchored to the surface of sol–gel polymer by a simple one-step procedure.The sol–gel polymer was characterized by FTIR spectroscopy, N2 adsorption–desorption analysis, scanning electron microscope, particle size distribution, and optical microscope by comparing with ion-imprinted sol–gel polymer obtained in the presence of \(UO_2^{2 + }\)ion. Surface area, pore volume, and diameter were analyzed from the profile of nitrogen adsorption. Conductometric and potentiometric titrations were carried out to evaluate the active concentration of functional precursor immobilizedwithin the sol–gel matrix. The pH-dependent fluorescence behavior of sol–gel polymer both in the absence and presence of \(UO_2^{2 + }\) ion was elucidated to optimizethe conditions for the sensing of \(UO_2^{2 + }\)ion in aqueous solution. The chemosensor exhibits singlefluorescence emission belonging to quinoline group in sol–gel polymer,whereas it demonstrates dual emission in the presence of \(UO_2^{2 + }\)ion. It was observed that the peak belonging quinoline group was quenched while the peak at longer wavelength enhanced upon interaction with \(UO_2^{2 + }\)ion.

Graphical Abstract

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Fluorescent sol–gel Imprinted polymer Chemosensor Uranyl ion 



The authors are grateful for the financial support from The Scientific and Technological Research Council of Turkey, TUBITAK (Project no: 115Z100).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.


This manuscript submitted does not contain any studies with human participants and animals


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of ChemistryIstanbul Technical UniversityMaslakTurkey

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