Issue 16, 2013

Electrochemiluminescent polymer films with a suitable redox “turn-off” absorbance window for remote selective sensing of Hg2+

Abstract

An electrochemiluminescent sensing scheme is presented for remote detection of Hg2+ through an ITO-coated nanostructured optical fibre bundle. It is based on the electropolymerisation of CPDT-linked ruthenium phenanthroline complexes carrying azacrown ethers as the receptor units (CPDT = 4H-cyclopenta[2,1-b:3,4-b′]dithiophene). The application of an anodic potential simultaneously induces electrogenerated chemiluminescence (ECL) and turns off the absorbance of the polymer backbone at the ECL emission wavelength. Therefore, the electropolymer film allows ECL light generation and transmission for efficient remote sensing in a synergetic way. As a proof of concept, selective detection of Hg2+ was demonstrated remotely by ECL through an optical fibre bundle.

Graphical abstract: Electrochemiluminescent polymer films with a suitable redox “turn-off” absorbance window for remote selective sensing of Hg2+

Article information

Article type
Paper
Submitted
19 Mar 2013
Accepted
15 May 2013
First published
16 May 2013

Analyst, 2013,138, 4500-4504

Electrochemiluminescent polymer films with a suitable redox “turn-off” absorbance window for remote selective sensing of Hg2+

Q. Shu, C. Adam, N. Sojic and M. Schmittel, Analyst, 2013, 138, 4500 DOI: 10.1039/C3AN00545C

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