Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy

Biere N, Koch S, Stohmann P, Walhorn V, Gölzhäuser A, Anselmetti D (2019)
Journal of Physical Chemistry C 123(32): 19659-19667.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The local work function is an invaluable feature for the specific analysis of the influences of atomic and molecular nanostructures on each other as well as the underlying surface. Adsorbate molecules can modify this parameter by introducing an electrical dipole moment, which affects the local contact potential. This can be accessed by Kelvin probe force microscopy (KPFM). In this paper, we demonstrate, by combining highly resolved topographic atomic force microscopy (AFM) data with the simultaneously acquired local work function signal, how each of these channels yield one angular coordinate, resulting in the three-dimensional determination of surface molecular dipole orientations. We studied the adsorption of terphenylthiol (TPT) self-assembled monolayers on Au(111) and Ag(111), as it is relevant in the light of electron radiation-induced transformation to carbon nanomembranes. We present noncontact AFM data combined with frequency-modulated KPFM in ultrahigh vacuum room temperature without any kind of deliberate tip functionalization. Our results show a surface coverage-dependent Langmuir-like evolution of phases with domains of flat lying as well as with upright molecular arrangements. Whereas we found an almost complete vertical orientation on silver, the orientation on gold was found to be tilted, corresponding to sp- and sp(3)-hybridized bond angles, respectively.
Erscheinungsjahr
2019
Zeitschriftentitel
Journal of Physical Chemistry C
Band
123
Ausgabe
32
Seite(n)
19659-19667
ISSN
1932-7447
eISSN
1932-7455
Page URI
https://pub.uni-bielefeld.de/record/2937106

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Biere N, Koch S, Stohmann P, Walhorn V, Gölzhäuser A, Anselmetti D. Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy. Journal of Physical Chemistry C. 2019;123(32):19659-19667.
Biere, N., Koch, S., Stohmann, P., Walhorn, V., Gölzhäuser, A., & Anselmetti, D. (2019). Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy. Journal of Physical Chemistry C, 123(32), 19659-19667. doi:10.1021/acs.jpcc.9b04982
Biere, N., Koch, S., Stohmann, P., Walhorn, V., Gölzhäuser, A., and Anselmetti, D. (2019). Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy. Journal of Physical Chemistry C 123, 19659-19667.
Biere, N., et al., 2019. Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy. Journal of Physical Chemistry C, 123(32), p 19659-19667.
N. Biere, et al., “Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy”, Journal of Physical Chemistry C, vol. 123, 2019, pp. 19659-19667.
Biere, N., Koch, S., Stohmann, P., Walhorn, V., Gölzhäuser, A., Anselmetti, D.: Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy. Journal of Physical Chemistry C. 123, 19659-19667 (2019).
Biere, Niklas, Koch, Sascha, Stohmann, Patrick, Walhorn, Volker, Gölzhäuser, Armin, and Anselmetti, Dario. “Resolving the 3D Orientation of Terphenylthiol Molecules on Noble Metals with Kelvin Probe Force Microscopy”. Journal of Physical Chemistry C 123.32 (2019): 19659-19667.