Zhong’an Li, Xiaoding Lou, Haibo Yu
Oct 4, 2008
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Influential Citations
176
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Quality indicators
Journal
Macromolecules
Abstract
To develop sensitive and selective CN− chemosensors, a new imidazole-functionalized polyfluorene (P1) was designed and obtained conveniently, the fluorescence of which could be completely quenched by Cu2+ ions at the concentration as low as 0.20 ppm in diluted solutions. By utilizing the much higher stability constant of the complex of CN− and Cu2+, the quenched fluorescence of the solution of P1 by Cu2+ ions could recover upon the addition of trace CN− anions, with the detection limit down to 0.31 ppm, making P1 a novel, sensitive and selective cyanide probe.