Pathways for oriented assembly of inorganic crystals at organic surfaces

Sumit Kewalramani, Jan Kmetko, Geoffrey Dommett, Kyungil Kim, Guennadi Evmenenko, Haiding Mo, Pulak Dutta*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Oriented inorganic films can be grown under Langmuir monolayers floating on supersaturated aqueous solutions. This process mimics biomineralization, and is potentially an easy method for growing designed inorganic films. Grazing-incidence X-ray diffraction (in situ) and scanning electron microscopy (of films transferred to substrates) reveal that oriented growth occurs via two distinct mechanisms. First, there can be epitaxial growth, with organic and inorganic lattices relaxing to allow an exact match. A variant is the appearance of a reconstructed surface superlattice that mediates between the unstrained organic and bulk inorganic structures. Second, the alignment of crystals already formed can be enhanced via spontaneous self-aggregation into oriented chains.

Original languageEnglish (US)
Pages (from-to)5627-5630
Number of pages4
JournalThin Solid Films
Volume515
Issue number14 SPEC. ISS.
DOIs
StatePublished - May 23 2007

Keywords

  • Crystallization
  • Epitaxy
  • Self-assembly
  • Soft-hard interfaces

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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