Orienting periodic organic-inorganic nanoscale domains through one-step electrodeposition

David J. Herman, Joshua E. Goldberger, Stephen Chao, Daniel T. Martin, Samuel I. Stupp

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

One of the challenges in the synthesis of hybrid materials with nanoscale structure is to precisely control morphology across length scales. Using a one-step electrodeposition process on indium tin oxide (ITO) substrates followed by annealing, we report here the preparation of materials with preferentially oriented lamellar domains of electron donor surfactants and the semiconductor ZnO. We found that either increasing the concentration of surfactant or the water to dimethyl sulfoxide ratio of solutions used resulted in the suppression of bloomlike morphologies and enhanced the density of periodic domains on ITO substrates. Furthermore, by modifying the surface of the ITO substrate with the conductive polymer blend poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate), we were able to alter the orientation of these electrodeposited lamellar domains to be perpendicular to the substrate. The long-range orientation achieved was characterized by 2D grazing incidence small-angle X-ray scattering. This high degree of orientation in electronically active hybrids with alternating nanoscale p-type and n-type domains is of potential interest in photovoltaics or thermoelectric materials.

Original languageEnglish
Pages (from-to)565-573
Number of pages9
JournalACS nano
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 25 2011

Keywords

  • Alignment
  • Electrodeposition
  • Hybrid
  • Lamellar
  • Nanoscale
  • Orientation
  • Zinc hydroxide
  • Zinc oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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