Direct Visualization of Molecule Deprotonation on an Insulating Surface

Kittelmann M, Rahe P, Gourdon A, Kühnle A (2012)
ACS Nano 6(8): 7406-7411.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Kittelmann, Markus; Rahe, Philipp; Gourdon, Andre; Kühnle, AngelikaUniBi
Abstract / Bemerkung
Elucidating molecular-scale details of basic reaction steps on surfaces is decisive for a fundamental understanding of molecular reactivity within many fields, including catalysis and on-surface synthesis. Here, the deprotonation of 2,5-dihydroxybenzoic acid (DHBA) deposited onto calcite (101;4) held at room temperature is followed in situ by noncontact atomic force microscopy. After deposition, the molecules form two coexisting phases, a transient striped phase and a stable dense phase. A detailed analysis of high-resolution noncontact atomic force microscopy images indicates the transient striped phase being a bulk-like phase, which requires hydrogen bonds between the carboxylic acid moieties to be formed. With time, the striped phase transforms into the dense phase, which is explained by the deprotonation of the molecules. In the deprotonated state, the molecules can no longer form hydrogen bonds, but anchor to the surface calcium cations with their negatively charged carboxylate group. The deprotonation step is directly confirmed by Kelvin probe force microscopy images that unravel the change in the molecular charge.
Stichworte
deprotonation; insulating surface; noncontact atomic force microscopy; Kelvin probe force microscopy
Erscheinungsjahr
2012
Zeitschriftentitel
ACS Nano
Band
6
Ausgabe
8
Seite(n)
7406-7411
ISSN
1936-0851
Page URI
https://pub.uni-bielefeld.de/record/2913812

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Kittelmann M, Rahe P, Gourdon A, Kühnle A. Direct Visualization of Molecule Deprotonation on an Insulating Surface. ACS Nano. 2012;6(8):7406-7411.
Kittelmann, M., Rahe, P., Gourdon, A., & Kühnle, A. (2012). Direct Visualization of Molecule Deprotonation on an Insulating Surface. ACS Nano, 6(8), 7406-7411. doi:10.1021/nn3025942
Kittelmann, M., Rahe, P., Gourdon, A., and Kühnle, A. (2012). Direct Visualization of Molecule Deprotonation on an Insulating Surface. ACS Nano 6, 7406-7411.
Kittelmann, M., et al., 2012. Direct Visualization of Molecule Deprotonation on an Insulating Surface. ACS Nano, 6(8), p 7406-7411.
M. Kittelmann, et al., “Direct Visualization of Molecule Deprotonation on an Insulating Surface”, ACS Nano, vol. 6, 2012, pp. 7406-7411.
Kittelmann, M., Rahe, P., Gourdon, A., Kühnle, A.: Direct Visualization of Molecule Deprotonation on an Insulating Surface. ACS Nano. 6, 7406-7411 (2012).
Kittelmann, Markus, Rahe, Philipp, Gourdon, Andre, and Kühnle, Angelika. “Direct Visualization of Molecule Deprotonation on an Insulating Surface”. ACS Nano 6.8 (2012): 7406-7411.
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6 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

Adsorption and migration of single metal atoms on the calcite (10.4) surface.
Pinto H, Haapasilta V, Lokhandwala M, Öberg S, Foster AS., J Phys Condens Matter 29(13), 2017
PMID: 28198353
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PMID: 26665062
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PMID: 24947801
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PMID: 23907708
Kelvin probe force microscopy of nanocrystalline TiO2 photoelectrodes.
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PMID: 23844348
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Bebensee F, Svane K, Bombis C, Masini F, Klyatskaya S, Besenbacher F, Ruben M, Hammer B, Linderoth T., Chem Commun (Camb) 49(81), 2013
PMID: 23999460

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