Abstract:Herein, we report on the synthesis of highly K + /Na + selective fluorescent probes in a feasible number of synthetic steps. These K + selective fluorescent probes, so called fluoroionophores, 1 and 2 consists of different highly K + /Na + selective building blocks the alkoxy-substituted N-phenylaza-18-crown-6 lariat ethers (ionophores) and "green" (cf. coumarin unit in 1) or "red" (cf. nile red unit in 2) fluorescent moieties (fluorophores). The fluorescent probes 1 and 2 show K + induced fluorescence enhance… Show more
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