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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 5
BKCSDE 30(5)
May 20, 2009 

Cu2+- and Hg2+-Selective Chemosensing by Dioxocyclams Having Two Appended Pyrenylacetamides
Hye Lim Jeon, Myung Gil Choi, Jong In Choe, Suk Kyu Chang*
Dioxocyclams, Chemosensing, Pyrene, Cu2+ selectivity, Hg2+ selectivity
Two new chemosensors 1 and 2 derived from 5,12- and 5,7-dioxocyclams were prepared and their signaling behaviors toward transition metal ions were investigated. Chemosensors 1 and 2 showed very efficient responses toward Cu2+ and Hg2+ ions. Ratiometric analysis of the fluorescence changes in pyrene monomer and excimer emissions clearly demonstrated the Cu2+- and Hg2+-selective signaling behavior. The signaling mechanism of the chemosensors is due to conformation changes upon complexation with metal ions and the inherent quenching nature of the complexed Cu2+ and Hg2+ ions themselves.
1093 - 1096
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