Hg2+-selective OFF-ON and Cu2+-selective ON-OFF type fluoroionophore based upon cyclam |
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Authors: | Kim So Hee Kim Jun Soo Park Sang Mi Chang Suk-Kyu |
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Institution: | Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea. |
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Abstract: | structure: see text]. A new cyclam derivative having two different fluorophores of pyrene and NBD subunits was prepared, and its Hg2+- and Cu2+-selective signaling behaviors were investigated. The detection limits for the analysis of Hg2+ and Cu2+ ions were found to be 7.9 x 10(-6) and 2.6 x 10(-7) M in aqueous acetonitrile solution (H2O-CH3CN = 10:90, v/v), respectively. The compound also exhibited a selective Hg2+/Cu2+-induced OFF-ON-OFF type of signaling pattern that can be utilized for the construction of functional supramolecular switching systems. |
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