RT Journal Article
T1 On-Surface Synthesis of Ethynylene-Bridged Anthracene Polymers
A1 Sánchez Grande, Ana
A1 De la Torre, Bruno
A1 Santos, José
A1 Cirera, Borja
A1 Lauwaet, Koen
A1 Chutora, Taras
A1 Edalatmanesh, Shayan
A1 Rosen, Johanna
A1 Zboril, Radek
A1 Miranda, Rodolfo
A1 Björk, Jonas
A1 Jelínek, Pavel
A1 Martín, Nazario
A1 Ecija, David
AB Engineering low-band-gap p-conjugated polymers is a growing area in basic and applied research. The main synthetic challenge lies in the solubility of the starting materials, which precludes advancements in the field. Here, we report an on-surface synthesis protocol to overcome such difficulties and produce poly(p-anthracene ethynylene) molecular wires on Au(111). To this aim, a quinoid anthracene precursor with =CBr2 moieties is deposited and annealed to 400 K, resulting in anthracene-based polymers. High-resolution nc-AFM measurements confirm the nature of the ethynylene-bridge bond between the anthracene moieties. Theoretical simulations illustrate the mechanism of the chemical reaction, highlighting three major steps: dehalogenation, diffusion of surface-stabilized carbenes, and homocoupling, which enables the formation of an ethynylene bridge. Our results introduce a novel chemical protocol to design p-conjugated polymers based on oligoacene precursors and pave new avenues for advancing the emerging field of on-surface synthesis.
PB Wiley-VCH
SN 1433-7851
YR 2019
FD 2019-05
LK https://hdl.handle.net/20.500.14352/13868
UL https://hdl.handle.net/20.500.14352/13868
LA eng
NO Unión Europea. H2020
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO Programa Ramón y Cajal Programa
NO Centro de Excelencia Severo Ochoa
NO Praemium Academie of the Academy of Science of the Czech Republic
NO European Structural and Investment Funds and the Czech Ministry of Education, Youth, and Sports
NO Czech Science Foundation
NO Swedish Research Council
NO Swedish Strategic Research Area in Materials Science on Functional Materials at Linkçping University
DS Docta Complutense
RD 7 abr 2025