A metal-catalyst free, flexible and free-standing chitosan/vacuum-stripped graphene/polypyrrole three dimensional electrode interface for high performance dopamine sensing

Jing Liu, Ziming He, Jingwen Xue, Timothy Thatt Yang Tan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

A three dimensional chitosan/vacuum-stripped graphene/polypyrrole interface with a hierarchical porous structure was fabricated as a free-standing and flexible electrochemical sensing electrode for dopamine detection, which exhibits unprecedented good selectivity, high sensitivity (632.1 μA mM -1 cm-2), wide linear response range (0.1-200 μM), low detection limit (19.4 nM, S/N = 3) and good sensing performance in human serum samples, outperforming the previously reported 2D and 3D graphene and/or the PPy modified electrode, and exhibiting comparable performance with the Au modified electrode. This journal is

Original languageEnglish
Pages (from-to)2478-2482
Number of pages5
JournalJournal of Materials Chemistry B
Volume2
Issue number17
DOIs
Publication statusPublished - May 7 2014
Externally publishedYes

ASJC Scopus Subject Areas

  • General Chemistry
  • Biomedical Engineering
  • General Materials Science

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