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Water‐soluble AIE‐active Fluorescent Organic Nanoparticles: Design, Preparation and Application for Specific Detection of Cyanide in Water and Food Samples
Author(s) -
Hou Min,
Liu Yichen,
Zhou Wei,
Zhang Jingdong,
Yu Fandong,
Zhang Yuan,
Liu Guangjian,
Xing Guowen
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100478
Subject(s) - cyanide , chemistry , fluorescence , tetraphenylethylene , nucleophile , protonation , photochemistry , organic chemistry , aggregation induced emission , catalysis , ion , physics , quantum mechanics
A dilactosyl‐dicyanovinyl‐functionalized tetraphenylethene ( TPELC ) was designed, synthesized and used for ratiometric sensing of cyanide. TPELC was comprised of three moieties (tetraphenylethylene, dicyanovinyl group and lactose unit) in one molecule, making TPELC water‐soluble and aggregation‐induced emission (AIE)‐active and selectively reactive to cyanide. Compared with other reported fluorescent probes containing dicyanovinyl group, TPELC is the first AIE luminogen to be assembled as fluorescent organic nanoparticles (FONs) for sensing of cyanide in water without the use of surfactant or the help of organic solvents based on the nucleophilic addition reaction. The detection mechanism was verified by liquid chromatograph mass spectrometry experiments and by protonation of cyanide to reduce the nucleophilicity of cyanide. In addition, TPELC was used for detection of the cyanide content of food samples and test strips were developed to simplify the detection procedure.