Reference : Stability of functionalized platform molecules on Au(111)
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
http://hdl.handle.net/10993/38103
Stability of functionalized platform molecules on Au(111)
English
Jasper-Tönnies, Torben []
Poltavskyi, Igor [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Ulrich, Sandra []
Moje, Tobias []
Tkatchenko, Alexandre mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Herges, Rainer []
Berndt, Richard []
27-Dec-2018
Journal of Chemical Physics
American Institute of Physics
149
8
Yes (verified by ORBilu)
International
0021-9606
1089-7690
New York
NY
[en] Trioxatriangulenium (TOTA) platform molecules were functionalized with methyl, ethyl, ethynyl,
propynyl, and hydrogen and sublimated onto Au(111) surfaces. Low-temperature scanning tunneling
microscopy data reveal that >99% of ethyl-TOTA and methyl-TOTA remain intact, whereas 60%
of H-TOTA and >99% of propynyl-TOTA and ethynyl-TOTA decompose. The observed tendency
toward fragmentation on Au(111) is opposite to the sequence of gas-phase stabilities of the molecules.
Although Au(111) is the noblest of all metal surfaces, the binding energies of the decomposition
products to Au(111) destabilize the functionalized platforms by 2 to 3.9 eV (190–370 kJ/mol) and
even render some of them unstable as revealed by density functional theory calculations. Van der
Waals forces are important, as they drive the adsorption of the platform molecules.
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/10993/38103
10.1063/1.5059344
FnR ; FNR11360857 > Alexandre Tkatchenko > QUANTION > Quantum Ion Tunneling and Scattering in Layered Nanomaterials > 01/03/2017 > 28/02/2020 > 2016

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