Two-dimensional crystal growth from undersaturated solutions

Anne E. Murdaugh, Mary Liddelow, Anneliese M. Schmidt, Srinivas Manne

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The solubility of a substance is commonly understood as the minimum concentration necessary for the condensation of a solid phase from solution. Here we report the nucleation and growth of ionic compounds from aqueous concentrations on the order of 0.1 times the solubility. The condensation is catalyzed by a foreign substrate, and the new phase grows as a crystalline monolayer. Undersaturated growth is observed only in cases where the dissolved compound is isomorphic with the substrate and the interaction strength between a dissolved-ion/substrate-ion pair exceeds that between the two dissolved ions. These results are consistent with a simple model in which favorable ion-surface interactions lead to ion enrichment and supersaturation in the two-dimensional interfacial zone.

Original languageEnglish (US)
Pages (from-to)5852-5856
Number of pages5
JournalLangmuir
Volume23
Issue number11
DOIs
StatePublished - May 22 2007

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Murdaugh, A. E., Liddelow, M., Schmidt, A. M., & Manne, S. (2007). Two-dimensional crystal growth from undersaturated solutions. Langmuir, 23(11), 5852-5856. https://doi.org/10.1021/la063548d