Electro-mechanically switchable hydrocarbons based on [8]annulenes.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
14 Feb 2022
14 Feb 2022
Historique:
received:
22
06
2021
accepted:
13
01
2022
entrez:
15
2
2022
pubmed:
16
2
2022
medline:
16
2
2022
Statut:
epublish
Résumé
Pure hydrocarbons with shape and conjugation properties that can be switched by external stimuli is an intriguing prospect in the design of new responsive materials and single-molecule electronics. Here, we develop an oligomeric [8]annulene-based material that combines a remarkably efficient topological switching upon redox changes with structural simplicity, stability, and straightforward synthesis: 5,12-alkyne linked dibenzo[a,e]cyclooctatetraenes (dbCOTs). Upon reduction, the structures accommodate a reversible reorganization from a pseudo-conjugated tub-shape to a conjugated aromatic system. This switching in oligomeric structures gives rise to multiple defined states that are deconvoluted by electrochemical, NMR, and optical methods. The combination of stable electromechanical responsivity and ability to relay electrons stepwise through an extended (pseudo-conjugated) π-system in partially reduced structures validate alkyne linked dbCOTs as a practical platform for developing new responsive materials and switches based on [8]annulene cores.
Identifiants
pubmed: 35165264
doi: 10.1038/s41467-022-28384-8
pii: 10.1038/s41467-022-28384-8
pmc: PMC8844043
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
860Informations de copyright
© 2022. The Author(s).
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