Bias-induced conformational switching of supramolecular networks of trimesic acid at the solid-liquid interface

Jeroen Ubink, Mihaela Enache, Meike Stöhr*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
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Abstract

Using the tip of a scanning tunneling microscope, an electric field-induced reversible phase transition between two planar porous structures ("chickenwire" and "flower") of trimesic acid was accomplished at the nonanoic acid/highly oriented pyrolytic graphite interface. The chicken wire structure was exclusively observed for negative sample bias, while for positive sample bias only the more densely packed flower structure was found. We suggest that the slightly negatively charged carboxyl groups of the trimesic acid molecule are the determining factor for this observation: their adsorption behavior varies with the sample bias and is thus responsible for the switching behavior. Published by AIP Publishing.

Original languageEnglish
Article number174703
Number of pages5
JournalThe Journal of Chemical Physics
Volume148
Issue number17
DOIs
Publication statusPublished - 7-May-2018

Keywords

  • SCANNING-TUNNELING-MICROSCOPY
  • REVERSIBLE PHASE-TRANSFORMATION
  • SOLVENT-INDUCED POLYMORPHISM
  • SOLID/LIQUID INTERFACE
  • MOLECULAR NETWORKS
  • PHOTO-REGULATION
  • TEMPERATURE
  • SURFACE
  • CRYSTAL
  • TRANSITIONS

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