On-surface synthesis and characterization of cumulene-linked Stone-Wales polymers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638960" target="_blank" >RIV/68378271:_____/25:00638960 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0373435" target="_blank" >https://hdl.handle.net/11104/0373435</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/anie.202506803" target="_blank" >10.1002/anie.202506803</a>
Alternative languages
Result language
angličtina
Original language name
On-surface synthesis and characterization of cumulene-linked Stone-Wales polymers
Original language description
Structural, chemical, and extrinsic modifications of graphene-based nanostructures enable bandgap tuning, optoelectronics, spintronics, and quantum materials design. A well-known approach to modify their electronic properties involves introducing nonbenzenoid ring topologies in their ideal sp2-hybridized hexagonal lattice, such as azulene or Stone-Wales (SW) defects. However, despite the unique structural and electronic characteristics that these nonalternant defects induce, their systematic incorporation in graphene-based nanostructures remains challenging. Here, we demonstrate the on-surface synthesis of one-dimensional SW-based polymers linked through cumulene bonds on the Au(111) surface via thermal and visible-light-induced reactions of a tailored molecular precursor. Scanning tunneling and noncontact atomic force microscopies reveal the nonplanar structure of SW-based units within the polymer chain, while the chemical structure of the polymer has been verified by Raman spectroscopy in combination with theoretical modeling. Additionally, scanning tunneling spectroscopy measurements show an experimental bandgap of 1.8 eV, which significantly differs from its isostructural cumulene-bridged bisanthene analogs. Our results highlight the critical role of SW defects in the structural and electronic properties of carbon-based conjugated polymers, advancing their design with prospects in next-generation optoelectronic devices.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Angewandte Chemie - International Edition
ISSN
1433-7851
e-ISSN
1521-3773
Volume of the periodical
64
Issue of the periodical within the volume
37
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
e202506803
UT code for WoS article
001539542600001
EID of the result in the Scopus database
2-s2.0-105011940024