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- W4206280215 abstract "High polymerization degree is critical for polypyrene applying in fluorescent sensing field, which closely related to high sensitivity. However, polypyrene films reported are either insoluble and unprocessable or soluble with few repeat units. In this work, we synthesized a poly(1-pyrenebutyric acid) ( PPBA ) via electrochemical polymerization in boron fluoride ethyl ether system and the degree of polymerization was up to 43, which showed good fluorescence. The polymer showed high selectivity toward to Cr 2 O 7 2− among sixteen anions and twenty cations in ethyl alcohol system, and the limit of detection was as low as 1.58 fM. Transmission electron microscope results showed that the quenching mechanism of the PPBA was Cr 2 O 7 2− -induced inter- and intra-polymer aggregation of polymer chains in solution. Finally, PPBA was successfully applied in milk detection, implying that PPBA can realize the ultra-trace detection of Cr 2 O 7 2− in practical application. High degree of polymerization of poly(1-pyrenebutyric acid) fluorescence sensor that can specifically recognize Cr 2 O 7 2− . • The fluorescence sensor PPBA with high polymerization degree was obtained by electropolymerization. • PPBA was highly sensitive to Cr 2 O 7 2− and the limit of detection was as low as 1.58 fM. • PPBA had a high anti-interference ability when sensing Cr 2 O 7 2− , avoiding the interference of common anions and cations. • PPBA was successfully used to detect Cr 2 O 7 2− in milk." @default.
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- W4206280215 date "2022-01-01" @default.
- W4206280215 modified "2023-10-18" @default.
- W4206280215 title "High degree of polymerization of poly(1-pyrenebutyric acid) enables the ultra-trace detection of Cr2O72− in milk" @default.
- W4206280215 doi "https://doi.org/10.1016/j.reactfunctpolym.2022.105182" @default.
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