RT Journal Article
T1 Resolving Atomic‐Scale Defects in Conjugated Polymers On‐Surfaces
A1 Mallada, Benjamín
A1 Chen, Qifan
A1 Chutora, Taras
A1 Sánchez‐Grande, Ana
A1 Cirera, Borja
A1 Santos Barahona, José Manuel
A1 Martín León, Nazario
A1 Ecija, David
A1 Jelínek, Pavel
A1 de la Torre, Bruno
AB 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.
PB Wiley
SN 0947-6539
YR 2022
FD 2022
LK https://hdl.handle.net/20.500.14352/99079
UL https://hdl.handle.net/20.500.14352/99079
LA eng
NO 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.
NO European Commission
NO Comunidad de Madrid
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 23 abr 2025