Preservation of the donor-acceptor character of a carbazole-phenalenone dyad upon adsorption on Pt(111)

0541658 - FZÚ 2022 RIV GB eng J - Journal Article
Ebeling, R. - Arasu, Narendra P. - Bensch, L. - Schulze Lammers, B. - Mayer, B. - Mueller, T.J.J. - Vázquez, Héctor - Karthaeuser, S.
Preservation of the donor-acceptor character of a carbazole-phenalenone dyad upon adsorption on Pt(111).
Nanoscale Advances. Roč. 3, č. 2 (2021), s. 538-549. ISSN 2516-0230. E-ISSN 2516-0230
R&D Projects: GA ČR GA19-23702S
Research Infrastructure: e-INFRA CZ - 90140
Institutional support: RVO:68378271
Keywords : donor-acceptor * STM * DFT * electronic structure
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 5.598, year: 2021
Method of publishing: Open access

Donor–acceptor molecules are a subject of great attention due to their immense potential in molecular electronics and photovoltaics. Despite numerous extensive studies demonstrating their functionality in solution, the donor–acceptor character is usually lost upon adsorption on a conducting substrate. Here the concept of breaking the conjugation between the donor and acceptor unit by insertion of a bridge is used. Furthermore, the bridge introduces a kink into the dyad and thus, reduces the possibility of hybridization with the substrate. A donor–bridge–acceptor dyad composed of carbazole and phenalenone units joined through a flexible bridge is synthesized and deposited on a Pt(111) surface. Its electronic properties are investigated with a combination of low temperature scanning tunneling microscope measurements and density functional theory simulations. Two preferential adsorption configurations are identified.
Permanent Link: http://hdl.handle.net/11104/0319197