Conjugated Polyfluorene-based Reversible Fluorescent Sensor for Cu(II) and Cyanide Ions in Aqueous Medium

A blue emissive polyfluorene bearing sulfate functionality in the side chain (PFS), as a sensory polymer to selectively report the presence of Cu2+ (detection limit down to 2.5 µM) based on the fluorescence “turn-off.” Surprisingly, the quenched luminescence of PFS by Cu2+ could be turned on after t...

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Bibliographic Details
Published in:Chemistry letters 2013-11, Vol.42 (11), p.1355-1357
Main Authors: Chakraborty, Chanchal, Singh, Pradeep, Maji, Samir K, Malik, Sudip
Format: Article
Language:English
Subjects:
Bearing
Chains (polymeric)
Cyanides
Emissivity
Fluorescence
Luminescence
Quenching (cooling)
Sensors
Sulfates
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Summary:A blue emissive polyfluorene bearing sulfate functionality in the side chain (PFS), as a sensory polymer to selectively report the presence of Cu2+ (detection limit down to 2.5 µM) based on the fluorescence “turn-off.” Surprisingly, the quenched luminescence of PFS by Cu2+ could be turned on after the addition of CN− (detection limit down to 6 µM), making PFS a sensitive, selective, and reversible cyanide probe.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.130630