Fluorescence sensing can not only identify a target substrate
qualitatively
but also achieve the purpose of quantitative detection through the
change of the fluorescence signal. It has the advantages of immense
sensitivity, rapid response, and excellent selectivity. The proposed
aggregation-induced emission (AIE) concept solves the problem of the
fluorescence of traditional fluorescent molecules becoming weak or
quenched in high concentration or aggregated state conditions. Schiff
base fluorescent probes have the advantages of simple synthesis, low
toxicity, and easy design. They are often used for the detection of
various substances. In this review we cover late developments in Schiff
base compounds with AIE characteristics working as fluorescence sensors.
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