Bis(coumarinyl) Schiff base 1 was designed and synthesized as a fluorescence turn‐on chemodosimeter for Fe3+. The chemodosimeter was readily synthesized in four steps from 2,4‐dihydroxybenzaldehyde. The addition of Fe3+ to chemodosimeter 1 induced about a 140‐fold enhancement influorescence. Furthermore, chemodosimeter 1 was also highly selective to Fe3+ over other metal ions, and most of the related metals ions exhibited negligible detection interference.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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Lin et al. (2008) studied this question.
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