Mechanistic Insights into the Triplet Sensitized Photochromism of Diarylethenes

dc.bibliographicCitation.firstPage7672eng
dc.bibliographicCitation.issue34eng
dc.bibliographicCitation.journalTitleChemistry - A European Journaleng
dc.bibliographicCitation.lastPage7677eng
dc.bibliographicCitation.volume26eng
dc.contributor.authorFredrich, Sebastian
dc.contributor.authorMorack, Tobias
dc.contributor.authorSliwa, Michel
dc.contributor.authorHecht, Stefan
dc.date.accessioned2021-07-30T06:18:51Z
dc.date.available2021-07-30T06:18:51Z
dc.date.issued2020
dc.description.abstractOperating photoswitchable molecules repetitively and reliably is crucial for most of their applications, in particular in (opto)electronic devices, and related to reversibility and fatigue resistance, which both critically depend on the photoisomerization mechanism defined by the substitution pattern. Two diarylethene photoswitches bearing biacetyl triplet sensitizers either at the periphery or at the core were investigated using both stationary as well as transient UV/Vis absorption spectroscopy ranging from the femtosecond to the microsecond time scale. The diarylethene with two biacetyl moieties at the periphery is switching predominantly from the triplet excited state, giving rise to an enhanced fatigue resistance. In contrast, the diarylethene bearing one diketone at the photoreactive inner carbon atom cyclizes from the singlet excited state and shows significantly higher quantum yields for both cyclization and cycloreversion. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/6434
dc.identifier.urihttps://doi.org/10.34657/5481
dc.language.isoengeng
dc.publisherWeinheim : Wiley-VCHeng
dc.relation.doihttps://doi.org/10.1002/chem.202000877
dc.relation.essn1521-3765
dc.relation.issn0947-6539
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subject.ddc540eng
dc.subject.ddc660eng
dc.subject.otherdiaryletheneseng
dc.subject.otherfatigue resistanceeng
dc.subject.otherphotochromismeng
dc.subject.othertransient absorptioneng
dc.subject.othertripleteng
dc.titleMechanistic Insights into the Triplet Sensitized Photochromism of Diaryletheneseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorDWIeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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