Direct quantitative measurement of the C=O center dot center dot center dot H-C bond by atomic force microscopy

Shigeki Kawai, Tomohiko Nishiuchi, Takuya Kodama, Peter Spijker, Remy Pawlak, Tobias Meier, John Tracey, Takashi Kubo, Ernst Meyer, Adam S. Foster

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The hydrogen atom-the smallest and most abundant atom-is of utmost importance in physics and chemistry. Although many analysis methods have been applied to its study, direct observation of hydrogen atoms in a single molecule remains largely unexplored. We use atomic force microscopy (AFM) to resolve the outermost hydrogen atoms of propellane molecules via very weak C=O center dot center dot center dot H-C hydrogen bonding just before the onset of Pauli repulsion. The direct measurement of the interaction with a hydrogen atom paves the way for the identification of three-dimensional molecules such as DNAs and polymers, building the capabilities of AFMtoward quantitative probing of local chemical reactivity.

Original languageEnglish
Article number1603258
Pages (from-to)1-6
Number of pages6
JournalScience Advances
Volume3
Issue number5
DOIs
Publication statusPublished - May 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • TOTAL-ENERGY CALCULATIONS
  • WAVE BASIS-SET
  • HYDROCARBON MOLECULE
  • HYDROGEN-ATOMS
  • GRAPHENE
  • SURFACE
  • TIPS

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