TY - JOUR
T1 - m-MTDATA on Au(111)
T2 - Spectroscopic Evidence of Molecule-Substrate Interactions
AU - Zhang, Teng
AU - Grazioli, Cesare
AU - Guarnaccio, Ambra
AU - Brumboiu, Iulia Emilia
AU - Lanzilotto, Valeria
AU - Johansson, Fredrik O.L.
AU - Beranová, Klára
AU - Coreno, Marcello
AU - de Simone, Monica
AU - Brena, Barbara
AU - Puglia, Carla
N1 - Publisher Copyright:
© 2022 American Chemical Society
PY - 2022/2/17
Y1 - 2022/2/17
N2 - The starburst π-conjugated molecule based on triphenylamine (TPA) building blocks, 4,4′,4″-tris(N-3-ethylphenyl-N-phenylamino)triphenylamine (C57H48N4, m-MTDATA), is widely used in optoelectronic devices due to its electron-donating properties. The electronic structure of m-MTDATA adsorbed on an Au(111) surface was investigated by means of photoelectron spectroscopy (PES) and near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The results were further compared to gas-phase measurements and DFT calculations. Our results clearly indicate a significant molecule-substrate interaction that induces considerable modifications on the electronic structure of the adsorbate compared to the isolated molecule. The energy level alignment analysis shows that the HOMO-LUMO gap is filled by new interface states.
AB - The starburst π-conjugated molecule based on triphenylamine (TPA) building blocks, 4,4′,4″-tris(N-3-ethylphenyl-N-phenylamino)triphenylamine (C57H48N4, m-MTDATA), is widely used in optoelectronic devices due to its electron-donating properties. The electronic structure of m-MTDATA adsorbed on an Au(111) surface was investigated by means of photoelectron spectroscopy (PES) and near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The results were further compared to gas-phase measurements and DFT calculations. Our results clearly indicate a significant molecule-substrate interaction that induces considerable modifications on the electronic structure of the adsorbate compared to the isolated molecule. The energy level alignment analysis shows that the HOMO-LUMO gap is filled by new interface states.
UR - http://www.scopus.com/inward/record.url?scp=85124913460&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.1c09574
DO - 10.1021/acs.jpcc.1c09574
M3 - Article
AN - SCOPUS:85124913460
SN - 1932-7447
VL - 126
SP - 3202
EP - 3210
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 6
ER -