Issue 14, 2014

Highly sensitive and selective fluorescence turn-on detection of lead ion in water using fluorene-based compound and polymer

Abstract

A fluorene-based sensory compound and polymers were designed and synthesized for the fluorescence turn-on detection of lead ions in aqueous media. The fluorene unit is used as a fluorophore and also as the building block for making a conjugated fluorene-based polymer. A dicarboxylate pseudo crown was selected as a receptor, which is highly selective towards the lead ion and imparts a good water-solubility to sensory compounds and polymers. The water-soluble sensory compound and fluorene-based polymer show high sensitivity and selectivity towards lead ions in aqueous media. Sensory compound 7a and polymer P2 are highly selective and sensitive for the fluorescence turn-on detection of lead ions in water with a concentration of 4 μM. Fibre-optic sensing for lead ions in water using sensory compound 7a has also been demonstrated.

Graphical abstract: Highly sensitive and selective fluorescence turn-on detection of lead ion in water using fluorene-based compound and polymer

Supplementary files

Article information

Article type
Paper
Submitted
18 Oct 2013
Accepted
20 Jan 2014
First published
20 Jan 2014

J. Mater. Chem. A, 2014,2, 5024-5033

Highly sensitive and selective fluorescence turn-on detection of lead ion in water using fluorene-based compound and polymer

S. K. Saha, K. R. Ghosh, W. Hao, Z. Y. Wang, J. Ma, Y. Chiniforooshan and W. J. Bock, J. Mater. Chem. A, 2014, 2, 5024 DOI: 10.1039/C3TA14209D

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