A Fluorescent Optical Fibre Chemosensor for Mercury Detection

Wren, S., Sun, T. & Grattan, K. T. V. (2015). A Fluorescent Optical Fibre Chemosensor for Mercury Detection. 24th International Conference on Optical Fibre Sensors, 9634, 96346C. doi: 10.1117/12.2194588

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A proof-of-concept mercury probe was developed based on covalent attachment of a chemical coating to optical fibre. The sensing element comprised a dansyl derivative and crown ether moiety, acting as fluorophore and metal ion chelator respectively. An ON-OFF type fluorescence (quench) occurred upon binding of mercury ions, via an intramolecular charge transfer mechanism, in aqueous solution in the 909nM-90.9μM (247 ppb -24.7 ppm) concentration range. A washing protocol was identified for sensor regeneration allowing the probe to be re-used.

Item Type: Article
Additional Information: Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: Mercury; Optical fibers; Sensors; Metals; Chemicals; Coating; Ions; Luminescence
Subjects: Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/15468

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