Effect of monomer structure and solvent on the growth of supramolecular nanoassemblies on a graphite surface

Aryavarta M S Kumar, Justin D. Fox, Lauren E. Buerkle, Roger E. Marchant, Stuart J. Rowan

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The self-assembly of high aspect ratio hierarchical surface assemblies, as observed by fluid tapping mode AFM, can be achieved through careful design of the supramolecular interactions between low-molecular-weight adsorbates. Needlelike assemblies of monotopic guanine end-capped alkanes grow on a graphite surface when deposited from a water/DMSO solution. The growth of these assemblies can be monitored by AFM in real time, and the growth rate along the two different axes can be understood (through molecular modeling) in terms of the specific adsorbate-adsorbate interactions along those axes. Additionally, through judicious solvent selection (e.g., use of non-H-bonding solvents such as o-dichlorobenzene), which allows the formation of hydrogen-bonding aggregates in solution and influences the surface-adsorbate interactions, dramatically different surface assemblies of these guanine derivatives are obtained.

Original languageEnglish
Pages (from-to)653-656
Number of pages4
JournalLangmuir
Volume25
Issue number2
DOIs
Publication statusPublished - 2009 Jan 20
Externally publishedYes

ASJC Scopus subject areas

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

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  • Cite this

    Kumar, A. M. S., Fox, J. D., Buerkle, L. E., Marchant, R. E., & Rowan, S. J. (2009). Effect of monomer structure and solvent on the growth of supramolecular nanoassemblies on a graphite surface. Langmuir, 25(2), 653-656. https://doi.org/10.1021/la803369j