Vis enkel innførsel

dc.contributor.authorAlemayehu, Abraham
dc.contributor.authorMcCormick, Laura J
dc.contributor.authorGagnon, Kevin J.
dc.contributor.authorBorisov, Sergey M.
dc.contributor.authorGhosh, Abhik
dc.date.accessioned2019-03-25T14:32:32Z
dc.date.available2019-03-25T14:32:32Z
dc.date.issued2018-08-17
dc.description.abstractA series of stable Pt(IV) corrole complexes with the general formula Pt<sup>IV</sup>[TpXPC](<i>m/p</i>-C<sub>6</sub>H<sub>4</sub>CN)(py), where TpXPC<sup>3–</sup> is the trianion of a tris(<i>p</i>-X-phenyl)corrole and X = CF<sub>3</sub>, H, and CH<sub>3</sub>, has been synthesized, affording key physicochemical data on a rare and elusive class of metallocorroles. Single-crystal X-ray structures of two of the complexes revealed very short equatorial Pt–N distances of 1.94–1.97 Å, an axial Pt–C distance of ∼2.03 Å, and an axial Pt–N distance of ∼2.22 Å. The complexes exhibit Soret maxima at ∼430 nm, which are essentially independent of the meso-aryl para substituents, and strong Q bands with the most intense peak at 595–599 nm. The substituent-independent Soret maxima are consistent with an innocent Pt<sup>IV</sup>–corrole<sup>3–</sup> description for the complexes. The low reduction potentials (−1.45 ± 0.08 V vs saturated calomel reference electrode) also support a highly stable Pt(IV) ground state as opposed to a noninnocent corrole•2– description. The reductions, however, are irreversible, which suggests that they involve concomitant cleavage of the Pt–aryl bond. Unlike Pt(IV) porphyrins, two of the complexes, Pt<sup>IV</sup>[TpXPC](m-C<sub>6</sub>H<sub>4</sub>CN)(py) (X = CF<sub>3</sub> and CH<sub>3</sub>), were found to exhibit room-temperature near-IR phosphorescence with emission maxima at 813 and 826 nm, respectively. The quantum yield of ∼0.3% is comparable to those observed for six-coordinate Ir(III) corroles.en_US
dc.description.sponsorshipTthe Advanced Light Sourceen_US
dc.descriptionWith permission from Alemayehu, A.B., McCormick, L.J.M., Gagnon, K.J., Borisov, S.M. & Ghosh, A. (2018). Stable Platinum(IV) Corroles: Synthesis, Molecular Structure, and Room-Temperature Near-IR Phosphorescence. <i>ACS Omega, 3</i>(8), 9360-9368. Copyright 2018 American Chemical Society. Source at <a href=https://doi.org/10.1021/acsomega.8b01149> https://doi.org/10.1021/acsomega.8b01149</a>.en_US
dc.identifier.citationAlemayehu, A.B., McCormick, L.J.M., Gagnon, K.J., Borisov, S.M. & Ghosh, A. (2018). Stable Platinum(IV) Corroles: Synthesis, Molecular Structure, and Room-Temperature Near-IR Phosphorescence. <i>ACS Omega, 3</i>(8), 9360-9368. https://doi.org/10.1021/acsomega.8b01149en_US
dc.identifier.cristinIDFRIDAID 1629717
dc.identifier.doi10.1021/acsomega.8b01149
dc.identifier.issn2470-1343
dc.identifier.urihttps://hdl.handle.net/10037/15064
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.journalACS Omega
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NANO2021/262229/Norway/Metallocorroles for photodynamic therapy and bioimaging//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440en_US
dc.titleStable Platinum(IV) Corroles: Synthesis, Molecular Structure, and Room-Temperature Near-IR Phosphorescenceen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel