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Proceedings Paper

Fluorescent optical fibre chemosensor for the detection of mercury
Author(s): T. Hien Nguyen; Stephen P. Wren; Tong Sun; Kenneth T. V. Grattan
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Paper Abstract

This work aims to develop a stable, compact and portable fibre optic sensing system which is capable of real time detection of the mercury ion (II), Hg2+. A novel fluorescent polymeric material for Hg2+ detection, based on a coumarin derivative (acting as the fluorophore) and an azathia crown ether moiety (acting as the mercury ion receptor), has been designed and synthesized. The material was covalently attached to the distal end of an optical fibre and exhibited a significant increase in fluorescence intensity in response to Hg2+ in the μM concentration range via a photoinduced electron transfer (PET) mechanism. The sensor has also demonstrated a high selectivity for Hg2+ over other metal ions. A washing protocol was identified for sensor regeneration, allowing the probe to be re-used. The approach developed in this work can also be used for the preparation of sensors for other heavy metals.

Paper Details

Date Published: 24 November 2016
PDF: 6 pages
Proc. SPIE 10013, SPIE BioPhotonics Australasia, 100131U (24 November 2016); doi: 10.1117/12.2243054
Show Author Affiliations
T. Hien Nguyen, City Univ. London (United Kingdom)
Stephen P. Wren, City Univ. London (United Kingdom)
Tong Sun, City Univ. London (United Kingdom)
Kenneth T. V. Grattan, City Univ. London (United Kingdom)

Published in SPIE Proceedings Vol. 10013:
SPIE BioPhotonics Australasia
Mark R. Hutchinson; Ewa M. Goldys, Editor(s)

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