2026-06-27T10:59:28Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/990792025-03-18T15:19:33Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Mallada, Benjamín author Chen, Qifan author Chutora, Taras author Sánchez‐Grande, Ana author Cirera, Borja author Santos Barahona, José Manuel author Martín León, Nazario author Ecija, David author Jelínek, Pavel author de la Torre, Bruno 2024-02-05T15:41:22Z 2024-02-05T15:41:22Z 2022 B. Mallada, Q. Chen, T. Chutora, A. Sánchez-Grande, B. Cirera, J. Santos, N. Martín, D. Ecija, P. Jelínek, B. de la Torre, Chem. Eur. J. 2022, 28, e202200944. 0947-6539 10.1002/chem.202200944 https://hdl.handle.net/20.500.14352/99079 1521-3765 https://doi.org/10.1002/chem.202200944 Atomic scale defects significantly affect the mechanical, electronic, and optical properties of π-conjugated polymers. Here, isolated atomic-scale defects are deliberately introduced into a prototypical anthracene-ethynylene π-conjugated polymer, and its local density of states is carefully examined on the atomic scale to show how individual defects modify the inherent electronic and magnetic properties of this one-dimensional systems. Scanning tunneling and atomic force microscopy experiments, supplemented with density functional theory calculations, reveal the existence of a sharp electronic resonance at the Fermi energy around certain defects, which is associated with the formation of a local magnetic moment accompanied by substantial mitigation of the mobility of charge carriers. While defects in traditionally synthesized polymers lead to arbitrary conformations, the presented results clearly reflect the preferential formation of low dimensional defects at specific polymer sites, which may introduce the possibility of engineering macroscopic defects in surface-synthesized conjugated polymers. eng Resolving Atomic‐Scale Defects in Conjugated Polymers On‐Surfaces journal article 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URL https://docta.ucm.es/bitstreams/3922ad22-d4e7-446b-88a7-7486a2736d01/download File MD5 76e17faa1a0b28d6f519f0d2def268e5 1064140 application/pdf Resolving_Atomic-Scale_Defects.pdf URL https://docta.ucm.es/bitstreams/fa37497d-0a73-45ba-9c62-ceee03627872/download File MD5 6115c70ec9cdfe9d64143c41932f1ee9 39837 text/plain Resolving_Atomic-Scale_Defects.pdf.txt