Core−Shell and Segmented Polymer−Metal Composite Nanostructures

Michal Lahav, Emily A. Weiss, Qiaobing Xu, and George M. Whitesides*
Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
Nano Lett., 2006, 6 (9), pp 2166–2171
DOI: 10.1021/nl061786n
Publication Date (Web): August 29, 2006
Copyright © 2006 American Chemical Society
*

 Corresponding author. E-mail:  gwhitesides@gmwgroup.harvard.edu. Phone:  617-495-9430. Fax:  617-495-9857.

Abstract

Abstract Image

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 thioaniline nucleated the growth of PANI on top of metal nanorods and acted as an adhesion layer between the metal and PANI components.

View: Full Text HTML | Hi-Res PDF

Tools

History

  • Published In Issue September 13, 2006
  • Received July 31, 2006
    Revised Manuscript Received August 14, 2006

Recommend & Share

Related Content

Other ACS content by these authors: