Electron/energy transfer studies on hybrid materials based on dinuclear coordination compounds of twisted perylene diimide

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dc.contributor.authorBuyukeksi, Sebile Isik
dc.contributor.authorKaratay, Ahmet
dc.contributor.authorAcar, Nursel
dc.contributor.authorKucukoz, Betuil
dc.contributor.authorElmali, Ayhan
dc.contributor.authorSengul, Abdurrahman
dc.date.accessioned2019-10-27T09:46:06Z
dc.date.available2019-10-27T09:46:06Z
dc.date.issued2019
dc.departmentEge Üniversitesien_US
dc.description.abstractTo understand the influence of transition metal ion coordination on the properties and performance of the triads, the symmetric bridging ligand, 1,10-phenanthroline-perylene diimide-1,10-phenanthroline, 1,10-Phen-PDI-1,10-Phen (1) comprising four electron-donating 4-methoxyphenoxy bulky groups at bay-positions and its corresponding square-planar coordination compounds with dichloroplatinum(II), [{PtCl2}(2)-1] (2) and palladium(II) [{PdCl2}(2)-1] (3) were prepared in order to tune the photochemical and optical properties of these hybrid materials. These triads show strong electronic absorption bands attributed to the PDI and M(II)(1,10-Phen)Cl-2 moieties in DMSO. UV-vis absorption spectra of the compounds were calculated using Time-Dependent Density Functional Theory (TDDFT) for the ground state optimized structures in DCM. Current results indicate that 2 has the lowest HOMO-LUMO gap (2.29 eV in DCM) among the investigated molecules. The energy and charge transfer processes with tailoring molecular structures are one of the important strategies for the design of future functional triads based on donor and acceptor moieties for hybrids optoelectronic devices. Thus, we studied linear absorption, fluorescence, and ultrafast transient absorption spectra measurements for the triads in DCM to investigate the impact of different functionalization strategies on the optical characteristics, photo-stability, and photo-induced charge-transfer (CT) processes. The observed ultrafast intramolecular charge transfer from donor units to acceptor part of 1-3 is related to fluorescence quenching and faster singlet state decay on transient absorption measurements. The intramolecular charge transfer mechanism was also compared with the unsymmetrical counterparts that were investigated previously. Symmetrical compounds exhibit faster charge transfer in comparison with the unsymmetrical compounds.en_US
dc.description.sponsorshipTurkish Scientific and Technical Research Council [TUBITAK]Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [214Z090]en_US
dc.description.sponsorshipThe authors are grateful to the Turkish Scientific and Technical Research Council for support of this project under the grant [TUBITAK-Project No: 214Z090]. We also thank for computer time on FenCluster provided by Ege University Faculty of Science and TUBITAK-ULAKBIM Truba Resources.en_US
dc.identifier.doi10.1016/j.jphotochem.2018.12.019
dc.identifier.endpage234en_US
dc.identifier.issn1010-6030
dc.identifier.issn1010-6030en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage226en_US
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2018.12.019
dc.identifier.urihttps://hdl.handle.net/11454/29232
dc.identifier.volume372en_US
dc.identifier.wosWOS:000457949800027en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal of Photochemistry and Photobiology A-Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPerylene diimideen_US
dc.subjectHybrid materialsen_US
dc.subjectDensity functional theoryen_US
dc.subjectUltrafast pump-probeen_US
dc.subjectCoordination compoundsen_US
dc.titleElectron/energy transfer studies on hybrid materials based on dinuclear coordination compounds of twisted perylene diimideen_US
dc.typeArticleen_US

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