Details

Autor(en) / Beteiligte

• Baggio, Bruna F
• Chen, Weijiong
• Montenegro, Benjamín
• Tumelero, Milton A
• Faccio, Ricardo
• Zoldan, Vinicius C
• Gao, Chunlei
• Pasa, André A

Titel

Single-Molecule Vibrational Spectroscopy: Cobalt Tetraphenylporphyrin Deposited on a Cu2N Ultrathin Insulating Layer

Ist Teil von

• Journal of physical chemistry. C, 2021-05, Vol.125 (18), p.9695-9702

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 (IETS) has been shown. For molecules adsorbed at the interface between Cu2N and Cu, the IETS signal was also observed.