FLUORIMETRIC MONITORING OF MOLECULAR IMPRINTED POLYMER RECOGNITION EVENTS FOR ALUMINIUM

Novel molecular imprints were prepared against aluminium. Sensing materials were prepared via non-covalent imprinting technique, using the aluminium(III)-morin chelate as the template. Based on the fluorescent properties of the chelate, it was possible to design a selective optical flow-through sens...

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Bibliographic Details
Published in:Analytical letters 2002-09, Vol.35 (11), p.1763-1774
Main Authors: AL-KINDY, S, BADIA, R, DIAZ-GARCIA, M. E
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Exact sciences and technology
General, instrumentation
Metal ion recognition
Molecular imprinted polymer
Optosensing
Sensor
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Summary:Novel molecular imprints were prepared against aluminium. Sensing materials were prepared via non-covalent imprinting technique, using the aluminium(III)-morin chelate as the template. Based on the fluorescent properties of the chelate, it was possible to design a selective optical flow-through sensor for Al 3+ . The affinity of the polymer binding sites was higher for aluminium than for other di- and trivalent ions (e.g., Be 2+ , Ca 2+ , Mg 2+ , Eu 3+ , Zn 2+ , Fe 3+ ), suggesting that the nature of the metal ion, its ionic radius, and the metal-morin stoichiometry play important roles in the ionic recognition.
ISSN:0003-2719
1532-236X
DOI:10.1081/AL-120013581