Core-shell and segmented polymer-metal composite nanostructures

Michal Lahav, Emily A. Weiss, Qiaobing Xu, George M. Whitesides

Research output: Contribution to journalArticle

124 Citations (Scopus)

Abstract

Composite nanostructures (∼200 nm wide and several micrometers long) of metal and polyaniline (PANI) in two new variations of core-shell (PANI-Au) and segmented (Au-PANI and Ni-Au-PANI) architectures were fabricated electrochemically within anodized aluminum oxide (AAO) membranes. Control over the structure of these composites (Including the length of the gold shells In the core-shell structures) was accomplished by adjusting the time and rate of electrodeposition and the pH of the solution from which the materials were grown. Exposure of the core-shell structures to oxygen plasma removed the PANI and yielded aligned gold nanotubes. In the segmented structures, a self-assembled monolayer (SAM) of thloaniline nucleated the growth of PANI on top of metal nanorods and acted as an adhesion layer between the metal and PANI components.

Original languageEnglish
Pages (from-to)2166-2171
Number of pages6
JournalNano letters
Volume6
Issue number9
DOIs
Publication statusPublished - Sep 1 2006

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ASJC Scopus subject areas

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

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