Ratiometric fluorescent determination of Zn(II): a new class of tripodal receptor using mixed imine and amide linkages

We synthesized a novel receptor with a unique combination of sp 2 nitrogen (–CH N–) and carbonyl groups from amide linkages. These two moieties are judiciously incorporated into the receptor design such that these sites simultaneous binding a metal ion may generate a stable five-member ring. The rec...

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Bibliographic Details
Published in:Tetrahedron 2010-10, Vol.66 (40), p.7965-7969
Main Authors: Lee, Doo Youn, Singh, Narinder, Kim, Min Joung, Jang, Doo Ok
Format: Article
Language:English
Subjects:
Chemistry
Coordination compounds
Exact sciences and technology
Fluorescent
Inorganic chemistry and origins of life
Preparations and properties
Ratiometric detection
Sensor
Tripodal
Zn 2
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Summary:We synthesized a novel receptor with a unique combination of sp 2 nitrogen (–CH N–) and carbonyl groups from amide linkages. These two moieties are judiciously incorporated into the receptor design such that these sites simultaneous binding a metal ion may generate a stable five-member ring. The receptor has been used to selectively detect Zn 2+ through changes in the fluorescence spectra. Upon Zn 2+ binding with the receptor, the fluorescence band shifted to enhance fluorescence intensity, allowing ratiometric determination of Zn 2+ concentration. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2010.08.024