Direct quantitative measurement of the C═O⋅⋅⋅H-C bond by atomic force microscopy

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...

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Veröffentlicht in:	Science advances 2017-05, Vol.3 (5), p.e1603258-e1603258
Hauptverfasser:	Kawai, Shigeki, Nishiuchi, Tomohiko, Kodama, Takuya, Spijker, Peter, Pawlak, Rémy, Meier, Tobias, Tracey, John, Kubo, Takashi, Meyer, Ernst, Foster, Adam S
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creator	Kawai, Shigeki Nishiuchi, Tomohiko Kodama, Takuya Spijker, Peter Pawlak, Rémy Meier, Tobias Tracey, John Kubo, Takashi Meyer, Ernst Foster, Adam S
description	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⋅⋅⋅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 AFM toward quantitative probing of local chemical reactivity.
doi_str_mv	10.1126/sciadv.1603258
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title	Direct quantitative measurement of the C═O⋅⋅⋅H-C bond by atomic force microscopy
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