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A Cu2+ ion-selective fluoroionophore with dual off/on switches

Author(s): Moriuchi-Kawakami Takayo | Hisada Youji | Shibutani Yasuhiko

Journal: Chemistry Central Journal
ISSN 1752-153X

Volume: 4;
Issue: 1;
Start page: 7;
Date: 2010;
Original page

Abstract A new malonamide fluoroionophore possessing two pyrene moieties was synthesized. This bispyrene exhibited the fluorescence of the pyrene monomer (λem = 395 nm) and intramolecular excimer (λem = 467 nm) emissions. The designed derivative showed the excellent ion sensing ability to Cu2+. The "on-off-off" and "off-on-off" fluorescence responses were demonstrated by the addition of the variable Cu2+ concentration. The utilization of the dual off/on responses could apply to the estimation of the rough Cu2+ concentration.
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