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Resolving atomic-scale defects in conjugated polymers on-surfaces
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SYSNO ASEP 0568414 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Resolving atomic-scale defects in conjugated polymers on-surfaces Author(s) Mallada Faes, Benjamin Jose (FZU-D) ORCID, RID
Chen, Qifan (FZU-D)
Chutora, T. (CZ)
Sánchez-Grande, A. (ES)
Cirera, B. (ES)
Santos, J. (ES)
Martín, N. (ES)
Écija, D. (ES)
Jelínek, Pavel (FZU-D) RID, ORCID
De La Torre Cerdeño, Bruno (FZU-D) ORCIDNumber of authors 10 Article number e202200944 Source Title Chemistry - A European Journal. - : Wiley - ISSN 0947-6539
Roč. 28, č. 48 (2022)Number of pages 10 s. Language eng - English Country DE - Germany Keywords on-surface synthesis ; scanning tunneling microscopy Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GX20-13692X GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000821063900001 EID SCOPUS 85133422109 DOI 10.1002/chem.202200944 Annotation 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.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1002/chem.202200944
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