An aggregation-induced emission based 'turn-on' fluorescent chemodosimeter for the selective detection of Pb2+ ions

摘要

An aggregation-induced emission (AIE) based "turn-on" fluorescent chemodosimeter for selective detection of Pb(2+)ions has been developed by making use of the strong affinity of lead ions for phosphate residues. The probe is a phosphate functionalized tetraphenylethylene derivative and the resulting lead-TPE complex has very low solubility in working solvent and triggers aggregation induced emission. The probe is highly efficient, cost-effective and shows a lowdetection limit of 10 ppb.