Diradical organic one-dimensional polymers synthesized on a metallic surface

0539772 - FZÚ 2021 RIV DE eng J - Článek v odborném periodiku
Sánchez-Grande, A. - Urgel, J. I. - Cahlík, Aleš - Santos, J. - Edalatmanesh, Shayan - Rodriguez-Sanchez, E. - Lauwaet, K. - Mutombo, Pingo - Nachtigallová, Dana - Nieman, R. - Lischka, H. - De La Torre Cerdeño, Bruno - Miranda, R. - Groening, O. - Martín, N. - Jelínek, Pavel - Écija, D.
Diradical organic one-dimensional polymers synthesized on a metallic surface.
Angewandte Chemie - International Edition. Roč. 59, č. 40 (2020), s. 17594-17599. ISSN 1433-7851. E-ISSN 1521-3773
Grant CEP: GA MŠMT LM2018110
Grant ostatní: AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institucionální podpora: RVO:68378271 ; RVO:61388963
Klíčová slova: biradical * DFT * nc-AFM * 1D chains * on surface chemistry
Obor OECD: Physical chemistry; Physical chemistry (UOCHB-X)
Impakt faktor: 15.336, rok: 2020
Způsob publikování: Open access

Here, we report on the synthesis and characterization of atomically precise one‐dimensional diradical peripentacene polymers on a Au(111) surface. By means of high‐resolution scanning probe microscopy complemented by theoretical simulations, we provide an evidence of their magnetic properties, which arise from the presence of two unpaired spins at their termini. In addition, we probe a transition of their magnetic properties related to the length of the polymer. Peripentacene dimers exhibit an antiferromagnetic (S = 0) singlet ground state. They are characterized by singlet‐triplet spin‐flip inelastic excitations with an effective exchange coupling (J eff ) of 2.5 meV, whereas trimers and longer peripentacene polymers reveal a paramagnetic nature and feature Kondo fingerprints at each terminus due to the unpaired spin.
Trvalý link: http://hdl.handle.net/11104/0317471