Electrochemiluminescence sensor based on partial sulfonation of polystyrene with carbon nanotubes.

Published

Journal Article

Herein, homogenously partial sulfonation of polystyrene (PSP) was performed. An effective electrochemiluminescence (ECL) sensor based on PSP with carbon nanotube (CNTs) composite film was developed. Cyclic voltammetry and electrochemical impendence spectroscopy were applied to characterize this composite film. The PSP was used as an immobilization matrix to entrap the ECL reagent Ru(bpy)3(2+) due to the electrostatic interactions between sulfonic acid groups and Ru(bpy)3(2+) cations. The introduction of CNTs into PSP acted not only as a conducting pathway to accelerate the electron transfer but also as a proper matrix to immobilize Ru(bpy)3(2+) on the electrode by hydrophobic interaction. Furthermore, the results indicated the ECL intensity produced at this composite film was over 3-fold compared with that of the pure PSP film due to the electrocatalytic activity of the CNTs. Such a sensor was verified by the sensitive determinations of 2-(dibutylamino)ethanol and tripropylamine.

Full Text

Duke Authors

Cited Authors

  • Li, J; Xu, Y; Wei, H; Huo, T; Wang, E

Published Date

  • July 15, 2007

Published In

Volume / Issue

  • 79 / 14

Start / End Page

  • 5439 - 5443

PubMed ID

  • 17567105

Pubmed Central ID

  • 17567105

International Standard Serial Number (ISSN)

  • 0003-2700

Digital Object Identifier (DOI)

  • 10.1021/ac0706224

Language

  • eng

Conference Location

  • United States