title: Highly sensitive dual-mode fluorescence detection of lead ion in water using aggregation-induced emissive polymers.
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.
authors: Department of chemistry, Carleton University, 1125 Colonel by Drive, Ottawa, K1S5B7, ON, Canada.
authors: Sukanta Kumar
authors: SK
authors: Saha
authors: Khama Rani
authors: KR
authors: Ghosh
authors: Jian Ping
authors: JP
authors: Gao
authors: Zhi Yuan
authors: ZY
authors: Wang
mesh_terms: D005453:Fluorescence; D005663:Furans / Q000737:chemistry; D007477:Ions / Q000032:analysis / Q000737:chemistry; D007854:Lead / Q000032:analysis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry*; D015203:Reproducibility of Results; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D005663:Furans; D007477:Ions; D011108:Polymers; D014874:Water Pollutants, Chemical; D007854:Lead; C018674:tetrahydrofuran
keywords: AIE-active polymers; fluorescence turn-off; fluorescence turn-on; lead ion sensors