Formation of polyaniline layer on DNA by electrochemical polymerization

Yosef Bardavid, Jamal Ghabboun, Danny Porath, Alexander B. Kotylar, Shlomo Yitzchaik*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We report the electropolymerization and characterization of polyaniline (PAN) on both DNA monolayer and single poly(dG)-poly(dC) DNA molecules serving as a template. The synthesis includes the formation of an electrostatic complex between the negatively charged DNA and positively charged anilinium ions followed by electrochemical oxidation and polymerization of the anilinium ions' monomers on the DNA template. The polymerization was carried out on a flame annealed gold substrate modified with positively charged self-assembled 4-aminothiophenol (4-ATPh) monolayer. The resulting monolayers and single macromolecular composites of DNA-PAN were characterized by atomic force microscopy (AFM), cyclic voltammetry (CV) impedance and UV-vis spectroscopy.

Original languageAmerican English
Pages (from-to)2217-2222
Number of pages6
JournalPolymer
Volume49
Issue number9
DOIs
StatePublished - 29 Apr 2008

Bibliographical note

Funding Information:
This work was supported by the EC through contracts IST-2001-38951 (“DNA-Based Nanowires”) and FP6-029192 (“DNA-Based Nanodevices”). Y.B. thanks the Israel Ministry of Absorption for the graduate scholarship.

Keywords

  • DNA
  • Nanowires
  • Polyaniline

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