1312540-80-9Relevant academic research and scientific papers
A new disubstituted polyacetylene bearing pyridine moieties: Convenient synthesis and sensitive chemosensor toward sulfide anion with high selectivity
Zhang, Liang,Lou, Xiaoding,Yu, Yun,Qin, Jingui,Li, Zhen
, p. 5186 - 5193 (2011)
To develop sensitive and selective S2- chemosensors, a new disubstituted polyacetylene (P2) bearing pyridine moieties in the side chains was prepared conveniently through a postfunctional method, the strong green fluorescence of which could be completely quenched by Cu2+ ions at the concentration as low as 2.0 × 10-6 mol/L in diluted solutions. Based on the displacement strategy, by utilizing the much higher stability constant of the complex of S2- and Cu2+, the quenched fluorescence of the solution of P2 by Cu2+ ions could recover upon the addition of trace S2- anions, with the detection limit down to 5.0 × 10-7 mol/L. Moreover, no interference were observed from other anions, including SO32-, HSO 3-, SO42-, ClO4 -, I-, Br-, Cl-, F-, IO3-, HPO42-, PO4 3-, C2O42-, S2O 32-, CO32-, AcO-, CN -, and P2O74-, making P2 a novel, sensitive, and selective sulfide probe.
