dc.contributor.author
Shaikh, Aslam C.
dc.contributor.author
Moutet, Jules
dc.contributor.author
Veleta, José M.
dc.contributor.author
Hossain, Md Mubarak
dc.contributor.author
Bloch, Jan
dc.contributor.author
Astashkin, Andrei V.
dc.contributor.author
Gianetti, Thomas L.
dc.date.accessioned
2020-11-06T13:09:02Z
dc.date.available
2020-11-06T04:05:58Z
dc.date.available
2020-11-06T13:09:02Z
dc.date.issued
2020-10-28
dc.identifier.issn
2041-6520
dc.identifier.issn
2041-6539
dc.identifier.other
10.1039/d0sc04850j
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/449984
dc.identifier.doi
10.3929/ethz-b-000449984
dc.description.abstract
Persistent organic radicals have gained considerable attention in the fields of catalysis and materials science. In particular, helical molecules are of great interest for the development and application of novel organic radicals in optoelectronic and spintronic materials. Here we report the syntheses of easily tunable and stable neutral quinolinoacridine radicals under anaerobic conditions by chemical reduction of their quinolinoacridinium cation analogs. The structures of these [4]helicene radicals were determined by X-ray crystallography. Density functional theory (DFT) calculations, supported by electron paramagnetic resonance (EPR) measurements, indicate that over 40% of spin density is located at the central carbon of our [4]helicene radicals regardless of their structural modifications. The localization of the charge promotes a reversible oxidation to the cation upon exposure to air. This unusual reactivity toward molecular oxygen was monitored via UV-Vis spectroscopy.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
dc.title
Persistent, highly localized, and tunable [4]helicene radicals
en_US
dc.type
Journal Article
dc.date.published
2020-09-23
ethz.journal.title
Chemical Science
ethz.journal.volume
11
en_US
ethz.journal.issue
40
en_US
ethz.journal.abbreviated
Chem. Sci.
ethz.pages.start
11060
en_US
ethz.pages.end
11067
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-11-06T04:06:11Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-11-06T13:09:13Z
ethz.rosetta.lastUpdated
2022-03-29T03:59:12Z
ethz.rosetta.versionExported
true
ethz.COinS