Journal
POLYMER CHEMISTRY
Volume 3, Issue 6, Pages 1446-1452Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2py20022h
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Funding
- National Science Foundation of China [20974084]
- Key Laboratory of Biomedical Polymers of Ministry of Education (Wuhan University) [20090401]
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To develop sensitive and selective CN- chemosensors, a new polyfluorene (P2) bearing pyridine moieties was designed and obtained conveniently, the fluorescence of which could be completely quenched by Cu2+ ions at the concentration as low as 5.67 x 10(-7) mol L-1 in diluted solutions. By utilizing the much higher stability constant of the complex of CN- and Cu2+, the quenched fluorescence of the solution of P2 by Cu2+ ions could recover upon the addition of trace CN- anions, with the detection limit as low as 3.3 x 10(-7) mol L-1, making P2 a novel, sensitive and selective cyanide probe.
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