Please use this identifier to cite or link to this item: https://hdl.handle.net/11000/31033
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dc.contributor.authorZink Lorre, Nathalie-
dc.contributor.authorSeetharaman, Sairaman-
dc.contributor.authorGutiérrez Moreno, David-
dc.contributor.authorFernández Lázaro, Fernando-
dc.contributor.authorKarr, Paul A.-
dc.contributor.authorD’Souza, Francis-
dc.contributor.otherDepartamentos de la UMH::Farmacología, Pediatría y Química Orgánicaes_ES
dc.date.accessioned2024-02-05T09:22:05Z-
dc.date.available2024-02-05T09:22:05Z-
dc.date.created2021-
dc.identifier.citationChemistry a European Journal. 2021 Oct 25;27(60):14996-15005es_ES
dc.identifier.issn1521-3765-
dc.identifier.issn0947-6539-
dc.identifier.urihttps://hdl.handle.net/11000/31033-
dc.description.abstractPhotoinduced charge transfer and separation events in a newly synthesized azobenzene-bridged perylenediimide-dimer (PDI-dimer) are demonstrated. Trans-to-cis conversion (∼50 % efficiency) from the initial trans PDI-dimer by 355 nm pulsed laser light, and its reversal, cis-to-trans, process by 435 nm laser light irradiation has been possible to accomplish. Efficient fluorescence quenching in the PDI-dimer, more so for the cis isomer was witnessed, and such quenching increased with increasing solvent polarity. DFT-calculated geometry and electronic structures helped in visualizing the charge transfer in the PDI-dimer in both isomeric forms, and also revealed certain degree of participation of the azobenzene entity in the charge transfer events. Femtosecond transient absorption spectral studies confirmed occurrence of both charge transfer followed by charge separation in the studied PDI-dimer in both trans and cis forms in polar solvents, and the evaluated time constants from Global target analysis revealed accelerated events in the cis PDI-dimer due to proximity effects. The present study offers key insights on the role of the azobenzene bridge, and the dimer geometry in governing the excited state charge transfer and separation in symmetrically linked PDI dimer.es_ES
dc.formatapplication/pdfes_ES
dc.format.extent10es_ES
dc.language.isoenges_ES
dc.publisherWiley-VCH GmbHes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectazobenzenees_ES
dc.subjectexcited state charge transferes_ES
dc.subjectperylenediimide dimeres_ES
dc.subjectsymmetry breakinges_ES
dc.subjecttrans-cis isomerizationes_ES
dc.titleExcited State Charge Separation in an Azobenzene-Bridged Perylenediimide Dimer – Effect of Photochemical Trans-Cis Isomerizationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://doi.org/10.1002/chem.202102903es_ES
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Artículos Farmacología, Pediatría y Química Orgánica


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