City Research Online

Abstract

The detection of cadmium in the environment is very important and in this work the development of an optical fiber chemical sensor for the detection of Cd2+ is described. To achieve this, an optical fiber-based technique has been developed using a sensing layer containing a coumarin fluorophore and dipicolylamine receptor. This was covalently attached to the distal end of an optical fiber and exhibited a significant increase in fluorescence intensity in response to Cd2+ in the μM concentration range via a photoinduced electron transfer (PET) mechanism. Selectivity for Cd2+ over other metal ions has also been demonstrated showing the value of the approach for environmental measurements.

Publication Type:	Article
Additional Information:	© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments:	School of Science & Technology > Engineering

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