Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 125, Issue 18, Pages 9695-9702Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.0c08722
Keywords
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Funding
- CNPQ
- CAPES [001]
- National Natural Science Foundation of China [11427902, 11674063]
- National Key Research and Development Program of China [2016YFA0300904, 2019YFA0308404]
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The electronic and vibrational properties of cobalt tetraphenylporphyrin (CoTPP) molecules deposited onto a Cu2N-Cu(100) surface were studied, showing that the Cu2N spacer layer promoted decoupling between the localized electronic states of CoTPP and the metallic substrate, enabling observation of nearly free molecule electronic states. Experimental results were supported by ab initio calculations and the correspondence with C-H and C-C bonding vibrations detected by inelastic electron tunneling spectroscopy (JETS). Additionally, an IETS signal was observed for molecules adsorbed at the interface between Cu2N and Cu.
The electronic and vibrational properties of cobalt tetraphenylporphyrin (CoTPP) molecules deposited onto a Cu2N-Cu(100) surface were studied by scanning tunneling microscopy. The Cu2N spacer layer promoted the decoupling between the localized electronic states of CoTPP and the metallic substrate, enabling the observation of electronic states of nearly free molecules. The experimental results are supported by ab initio calculations, and the correspondence with C-H and C-C bonding vibrations detected by inelastic electron tunneling spectroscopy (JETS) has been shown. For molecules adsorbed at the interface between Cu2N and Cu, the IETS signal was also observed.
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