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Zinc selective chemosensors based on the flexible dipicolylamine and quinoline

Title
Zinc selective chemosensors based on the flexible dipicolylamine and quinoline
Authors
Lee H.G.Lee J.H.Jang S.P.Hwang I.H.Kim S.-J.Kim Y.Kim C.Harrison R.G.
Ewha Authors
김성진김영미
SCOPUS Author ID
김성진scopus; 김영미scopus
Issue Date
2013
Journal Title
Inorganica Chimica Acta
ISSN
0020-1693JCR Link
Citation
vol. 394, pp. 542 - 551
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Zinc sensor molecules containing quinoline have been synthesized, which show fluorescence in the presence of Zn 2+. The nitrogen in quinoline is critical to fluorescence and fluorescence enhancement is promoted by deprotonating the sensor's amide. One of the sensors is highly selective for Zn 2+ over Cd 2+ and other cations such as Hg 2+, Fe 2+, Mn 2+ and Ca 2+. This selectivity can be attributed to the increased absorption of the sensor in the presence of Zn 2+ and the strong binding of Zn 2+. Structural studies, including X-ray and NMR, show the ability of dipicolylamine (DPA) to bind in facial and meridional manners to Zn 2+. Crystal structures of different compounds show Zn 2+ coordinating to three, four, and five nitrogens from the compounds. They also indicate that the selectivity of DPA containing compounds towards Zn 2+ may originate from Zn 2+ being stable in different coordination environments. © 2012 Elsevier B.V. All rights reserved.
DOI
10.1016/j.ica.2012.09.009
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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