Electrochemical Whittling of Organic Nanostructures

Yi Zhang, Khalid Salaita, Jung Hyurk Lim, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

A strategy for reducing the feature size of organic structures on metal surfaces is presented. The approach works by the electrochemical desorption of the peripheries of organic nanostructures (SAMs of 16-mercaptohexadecanoic acid (MHA)) generated by dip-pen nanolithography. By holding the potential of a gold substrate at -750 mV vs Ag/AgCI for designated periods of time in 0.5 M aqueous KOH solution, the size of the MHA nanostructures on the substrate could be reduced in a controlled fashion. It is proposed that the free volume surrounding the nanostructures and the greater ion accessibility to edge sites facilitate this process. Structures as small as 30 nm could be generated on polycrystalline gold substrates.

Original languageEnglish (US)
Pages (from-to)1389-1392
Number of pages4
JournalNano letters
Volume2
Issue number12
DOIs
StatePublished - Dec 2002

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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