Towards fast circularly polarized luminescence in 2‐coordinate chiral mechanochromic copper(I) carbene complexes

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dc.contributor.authorMuthig, André M. T.
dc.contributor.authorWieland, Justin
dc.contributor.authorLenczyk, Carsten
dc.contributor.authorKoop, Stefan
dc.contributor.authorTessarolo, Jacopo
dc.contributor.authorClever, Guido H.
dc.contributor.authorHupp, Benjamin
dc.contributor.authorSteffen, Andreas
dc.date.accessioned2024-12-03T11:30:04Z
dc.date.available2024-12-03T11:30:04Z
dc.date.issued2023-06-05
dc.description.abstractA series of chiral mechanochromic copper(I) cAAC (cAAC=cyclic (alkyl)(amino)carbene) complexes with a variety of amide ligands have been studied with regard to their photophysical and chiroptical properties to elucidate structure-property relationships for the design of efficient triplet exciton emitters exhibiting circularly polarized luminescence. Depending on the environment, which determines the excited state energies, either thermally activated delayed fluorescence (TADF) from 1/3LLCT states or phosphorescence from 3LLCT/LC states occurs. However, neither chiral moieties at the carbene nor at the carbazolate ligands provide detectable luminescence dissymmetries glum. An exception is [Cu(phenoxazinyl)(cAAC)], showing orange to deep red TADF with λmax=601–715 nm in solution, powders and in PMMA. In this case, the amide ligand can undergo distortions in the excited state. This design motif leads to the first linear, non-aggregated CPL-active copper(I) complex with glum of −3.4 ⋅ 10−3 combined with a high radiative rate constant of 6.7 ⋅ 105 s−1.en
dc.identifier.urihttp://hdl.handle.net/2003/43005
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-24838
dc.language.isoen
dc.relation.ispartofseriesChemistry - a European journal; 29(51)
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectchiralityen
dc.subjectcircularly polarized luminescenceen
dc.subjectcopperen
dc.subjectexcited statesen
dc.subjectTADFen
dc.subject.ddc540
dc.titleTowards fast circularly polarized luminescence in 2‐coordinate chiral mechanochromic copper(I) carbene complexesen
dc.typeText
dc.type.publicationtypeResearchArticle
dcterms.accessRightsopen access
eldorado.secondarypublicationtrue
eldorado.secondarypublication.primarycitationA. M. T. Muthig, J. Wieland, C. Lenczyk, S. Koop, J. Tessarolo, G. H. Clever, B. Hupp, A. Steffen, Chem. Eur. J. 2023, 29, e202300946.
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/chem.202300946

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