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A ratiometric and colorimetric probe (FD) for the sensitive detection of fluoride ions are reported. Only fluoride anions can induce a red-shift (116 nm) in the maximum absorption wavelength and its dynamic detection range is determined as 60–250 μM. Moreover, FD is applied to a paper-based sensing system for convenient “naked-eye” measurement.
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Choi et al. (2020) studied this question.
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