0568417 - FZÚ 2023 RIV CH eng J - Journal Article
Biswas, K. - Yang, L. - Ma, J. - Sánchez-Grande, A. - Chen, Qifan - Lauwaet, K. - Gallego, J. M. - Miranda, R. - Écija, D. - Jelínek, Pavel - Feng, X.L. - Urgel, J. I.
Defect-induced pi-magnetism into non-benzenoid nanographenes.
Nanomaterials. Roč. 12, č. 2 (2022), č. článku 224. ISSN 2079-4991. E-ISSN 2079-4991
R&D Projects: GA ČR(CZ) GX20-13692X; GA MŠMT LM2018110
Grant - others:AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institutional support: RVO:68378271
Keywords : on-surface synthesis * nanomagnetism * polycyclic aromatic hydrocarbons * nanographenes * open-shell character * STM * nc-AFM
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 5.3, year: 2022 ; AIS: 0.712, rok: 2022
Method of publishing: Open access
DOI: https://doi.org/10.3390/nano12020224

The synthesis of nanographenes (NGs) with open-shell ground states have recently attained increasing attention in view of their interesting physicochemical properties and great prospects in manifold applications as suitable materials within the rising field of carbon-based magnetism. A potential route to induce magnetism in NGs is the introduction of structural defects, for instance non-benzenoid rings, in their honeycomb lattice. Here, we report the on-surface synthesis of three open-shell non-benzenoid NGs (A1, A2 and A3) on the Au(111) surface. A1 and A2 contain two five- and one seven-membered rings within their benzenoid backbone, while A3 incorporates one five-membered ring. Their structures and electronic properties have been investigated by means of scanning tunneling microscopy, noncontact atomic force microscopy and scanning tunneling spectroscopy complemented with theoretical calculations. Our results provide access to open-shell NGs with a combination of non-benzenoid topologies previously precluded by conventional synthetic procedures.
Permanent Link: https://hdl.handle.net/11104/0339728