Next Article in Journal
GPS Satellite Orbit Prediction at User End for Real-Time PPP System
Next Article in Special Issue
A Light-Up Probe for Detection of Adenosine in Urine Samples by a Combination of an AIE Molecule and an Aptamer
Previous Article in Journal
A Practical Evaluation of a High-Security Energy-Efficient Gateway for IoT Fog Computing Applications
Previous Article in Special Issue
Tuning Sensory Properties of Triazole-Conjugated Spiropyrans: Metal-Ion Selectivity and Paper-Based Colorimetric Detection of Cyanide
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(9), 1980;

Fluorescent Polymer Incorporating Triazolyl Coumarin Units for Cu2+ Detection via Planarization of Ict-Based Fluorophore

Department of Chemistry, Nelson Mandela Metropolitan University, Port Elizabeth 6031, South Africa
Author to whom correspondence should be addressed.
Received: 26 June 2017 / Revised: 28 July 2017 / Accepted: 4 August 2017 / Published: 30 August 2017
(This article belongs to the Special Issue Fluorescent Probes and Sensors)
Full-Text   |   PDF [4346 KB, uploaded 4 September 2017]   |  


A novel fluorescent polymer with pendant triazolyl coumarin units was synthesized through radical polymerization. The polymer showed reasonable sensitivity and selectivity towards Cu2+ in acetonitrile in comparison to other tested metal ions with a significant quenching effect on fluorescence and blue shifting in the range of 20 nm. The blue shift was assigned to the conformation changes of the diethylamino group from the coumarin moiety which led to planarization of the triazolyl coumarin units. The possible binding modes for Cu2+ towards the polymer were determined through the comparison of the emission responses of the polymer, starting vinyl monomer and reference compound, and the triazole ring was identified as one of the possible binding sites for Cu2+. The detection limits of the polymer and vinyl monomer towards Cu2+ were determined from fluorescence titration experiments and a higher sensitivity (35 times) was observed for the polymer compared with its starting monomer. View Full-Text
Keywords: pendant group; triazolyl coumarin; chemosensor; aggregate; planarization pendant group; triazolyl coumarin; chemosensor; aggregate; planarization

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Ngororabanga, J.M.V.; Du Plessis, J.; Mama, N. Fluorescent Polymer Incorporating Triazolyl Coumarin Units for Cu2+ Detection via Planarization of Ict-Based Fluorophore. Sensors 2017, 17, 1980.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top