Abstract
A simple Schiff-base colorimetric receptor 1 was prepared. It exhibits an ‘off–on-type’ mode with high sensitivity in the presence of Hg2+. The change in color is very easily observed by the naked eye in the presence of Hg2+, whereas other metal cations do not induce such a change. A Job plot indicated a 1 : 1 complexation stoichiometry between receptor 1 and Hg2+. The association constant for 1–Hg2+ in Tetrahydrofuran (THF) was determined to be 1.3 × 10(9)M-1 using a Hill plot.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Colorimetry
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Fluorescence*
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Fluorescent Dyes / chemical synthesis
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Fluorescent Dyes / chemistry*
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Magnetic Resonance Spectroscopy
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Mercury / analysis*
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Molecular Structure
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Naphthalenes / chemistry
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Pyridines / chemistry
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Schiff Bases / chemical synthesis
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Schiff Bases / chemistry*
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Spectrophotometry, Ultraviolet
Substances
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2-hydroxynaphthalene-1-carboxaldehyde
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Fluorescent Dyes
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Naphthalenes
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Pyridines
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Schiff Bases
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Mercury
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2,6-diaminopyridine