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Highly sensitive dual-mode fluorescence detection of lead ion in water using aggregation-induced emissive polymers
Sukanta Kumar Saha1, Khama Rani Ghosh, Jian Ping Gao
1Department of chemistry, Carleton University, 1125 Colonel by Drive, Ottawa, K1S5B7, ON, Canada.
Abstract:
A series of fluorene-based conjugated polymers containing the aggregation-induced emissive (AIE)-active tetraphenylethene and dicarboxylate pseudocrown as a receptor exhibits a unique dual-mode sensing ability for selective detection of lead ion in water. Fluorescence turn-off and turn-on detections are realized in 80%-90% and 20% water in tetrahydrofuran (THF), respectively, for lead ion with a concentration as low as 10(-8) m.
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