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A photoelectrochemical study of bioinspired 2-styryl-1-benzopyrylium cations on TiO2 nanoparticle layer for application in dye-sensitized solar cells

dc.contributor.authorCalogero, Giuseppe
dc.contributor.authorCitro, Ilaria
dc.contributor.authorSebastianella, Gioacchino Calandra
dc.contributor.authorDi Marco, Gaetano
dc.contributor.authorDiniz, Ana Marta
dc.contributor.authorParola, A. Jorge
dc.contributor.authorPina, Fernando
dc.date.accessioned2020-06-10T18:31:10Z
dc.date.available2020-06-10T18:31:10Z
dc.date.issued2019-12
dc.description.abstractIn the present work, five 2-styryl-1-benzopyrylium salts and their relative self-assembly processes towards TiO2 nanocrystalline layers were evaluated as photosensitizers in dye-sensitized solar cells (DSSCs). Integration of these 2-styryl-1-benzopyrylium salts with the semiconductor allow for the performance of highly specific functions suitable for smart applications in material science. Spectroscopic and photoelectrochemical measurements conducted on these five bio-inspired dyes, in solution and upon adsorption onto titanium dioxide films, allowed detailed discussion of the anchoring ability of the different donor groups decorating the 2-styryl-1-benzopyrylium core and have demonstrated their ability as photosensitizers. Our results suggest that the introduction of a dimethylamino group in position 4' of the 2-styryl-1-benzopyrylium skeleton can alter the conjugation of the molecule leading to larger absorption in the visible region and a stronger electron injection of the dye into the conduction band of TiO2. Moreover, our experimental data have been supported by theoretical calculations with the aim to study the energy of the excited states of the five compounds. In this specific case, the simulations reported contributed to better describe the properties of the compounds used and to help create the necessary basis for the design of new and targeted bio-inspired molecules.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCalogero G, Citro I, Sebastianella GC, Di Marco G, Diniz AM, Parola AJ, et al. A photoelectrochemical study of bioinspired 2-styryl-1-benzopyrylium cations on TiO2 nanoparticle layer for application in dye-sensitized solar cells. Materials. 2019;12(24):4060.pt_PT
dc.identifier.doi10.3390/ma12244060pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/11816
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/1996-1944/12/24/4060pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectAnchoring functional grouppt_PT
dc.subjectBenzopyrylium saltspt_PT
dc.subjectDye-sensitized solar cellspt_PT
dc.subjectMolecular synthesispt_PT
dc.subjectSelf-assembly materials nanocrystalline layerspt_PT
dc.subjectTheoretical calculationspt_PT
dc.titleA photoelectrochemical study of bioinspired 2-styryl-1-benzopyrylium cations on TiO2 nanoparticle layer for application in dye-sensitized solar cellspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue24pt_PT
oaire.citation.startPage4060pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume12pt_PT
person.familyNameDiniz
person.givenNameAna Marta Correia
person.identifierC-6705-2013
person.identifier.ciencia-id681D-28CE-8AF9
person.identifier.orcid0000-0003-3157-6937
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8b39e02b-0088-4d88-9267-3e6ffef55408
relation.isAuthorOfPublication.latestForDiscovery8b39e02b-0088-4d88-9267-3e6ffef55408

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