Ratiometric Determination of Hg2+ Ions Based on Simple Molecular Motifs of Pyrene and Dioxaoctanediamide

A new podand-type dioxaoctanediamide-based chemosensor having two pyrene moieties was prepared, and its fluoroionophoric behaviors toward transition-metal ions were investigated. Pyrene-appended dioxaoctanediamide 1 showed a selective fluorescence quenching toward Hg2+ ions over other transition-met...

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Bibliographic Details
Published in:Organic letters 2007-03, Vol.9 (6), p.1129-1132
Main Authors: Kim, Jun Soo, Choi, Myung Gil, Song, Ki Cheol, No, Kyoung Tai, Ahn, Sangdoo, Chang, Suk-Kyu
Format: Article
Language:English
Subjects:
Amides - chemistry
Binding Sites
Biosensing Techniques - methods
Cations, Divalent
Fluorescent Dyes - chemical synthesis
Mercury - analysis
Mercury - chemistry
Methanol - chemistry
Octanes - chemistry
Pyrenes - chemistry
Spectrometry, Fluorescence
Water - chemistry
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Summary:A new podand-type dioxaoctanediamide-based chemosensor having two pyrene moieties was prepared, and its fluoroionophoric behaviors toward transition-metal ions were investigated. Pyrene-appended dioxaoctanediamide 1 showed a selective fluorescence quenching toward Hg2+ ions over other transition-metal ions in an aqueous methanol solution. Unique responses in pyrene monomer and excimer emissions allowed selective ratiometric determination of Hg2+ ions in aqueous environments, and the detection limit was found to be 1.6 × 10-6 M.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol070143r