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Molecular engineering of logic gate types by module rearrangement in ‘Pourbaix Sensors’: the effect of excited-state electric fields

hal.structure.identifierDepartment of Chemistry [Msida]
dc.contributor.authorSPITERI, Jake
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorDENISOV, Sergey
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJONUSAUSKAS, Gediminas
hal.structure.identifierAGH University of Science and Technology [Krakow, PL] [AGH UST]
dc.contributor.authorKLEJNA, Sylwia
hal.structure.identifierAGH University of Science and Technology [Krakow, PL] [AGH UST]
dc.contributor.authorSZACIŁOWSKI, Konrad
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorMCCLENAGHAN, Nathan
hal.structure.identifierDepartment of Chemistry [Msida]
dc.contributor.authorMAGRI, David
dc.date.created2018-02-26
dc.date.issued2018
dc.identifier.issn1477-0520
dc.description.abstractEnTwo types of fluorescent logic gates are accessed from two different arrangements of the same modular components, one as an AND logic gate (1) and the other as a PASS 0 logic gate (2). The logic gates were designed with an 'electron-donor-spacer 1-fluorophore-spacer 2-receptor' format and demonstrated in 1 : 1 (v/v) methanol/water. The molecules consist of ferrocene as the electron donor, 4-aminonaphthali-mide as the fluorophore and a tertiary alkylamine as the receptor. In the presence of high H + and Fe 3+ levels, regioisomers 1a and 1b switch 'on' as AND logic gates with fluorescence enhancement ratios of 16-fold and 10-fold, respectively, while regioisomers 2a and 2b are functionally dormant, exhibiting no fluorescence switching. The PASS 0 logic of 2a and 2b results from the transfer of an electron from the excited state fluorophore to the ferrocenium unit under oxidising conditions as predicted by DFT calculations. Time-resolved fluorescence spectroscopy provided lifetimes of 8.3 ns and 8.1 ns for 1a and 1b, respectively. The transient signal recovery rate of 1b is ∼10 ps while that of 2b is considerably longer on the nanosecond timescale. The divergent logic attributes of 1 and 2 highlight the importance of field effects and opens up a new approach for regulating logic-based molecules.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/
dc.title.enMolecular engineering of logic gate types by module rearrangement in ‘Pourbaix Sensors’: the effect of excited-state electric fields
dc.typeArticle de revue
dc.identifier.doi10.1039/c8ob00485d
dc.subject.halPhysique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
dc.description.sponsorshipEuropeReservoir Computing with Real-time Data for future IT
bordeaux.journalOrganic & Biomolecular Chemistry
bordeaux.page6195-6201
bordeaux.volume16
bordeaux.issue34
bordeaux.peerReviewedoui
hal.identifierhal-01955955
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01955955v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Organic%20&%20Biomolecular%20Chemistry&rft.date=2018&rft.volume=16&rft.issue=34&rft.spage=6195-6201&rft.epage=6195-6201&rft.eissn=1477-0520&rft.issn=1477-0520&rft.au=SPITERI,%20Jake&DENISOV,%20Sergey&JONUSAUSKAS,%20Gediminas&KLEJNA,%20Sylwia&SZACI%C5%81OWSKI,%20Konrad&rft.genre=article


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