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Size-Dependent Photophysical Behavior of Low Bandgap Semiconducting Polymer Particles

dc.rights.licenseopen
dc.contributor.authorVIRGILI, Tersilla
dc.contributor.authorBOTTA, Chiara
dc.contributor.authorMRÓZ, Marta
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
dc.contributor.authorPARRENIN, Laurie
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
dc.contributor.authorBROCHON, Cyril
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
dc.contributor.authorCLOUTET, Eric
IDREF: 151048681
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
dc.contributor.authorPAVLOPOULOU, Eleni
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
dc.contributor.authorHADZIIOANNOU, Georges
hal.structure.identifierDepartment of Physics and Astronomy [Sheffield]
dc.contributor.authorGEOGHEGAN, Mark
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2019
dc.identifier.issn2296-2646
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/19871
dc.description.abstractEnThe photophysics of water and propan-1-ol suspensions of poly[N-9”-heptadecanyl-2,7-carbazole-alt−5,5-(4,7-di-2-thienyl-2′,1′,3′- benzothiadiazole)] (PCDTBT) nanoparticles and mesoparticles has been studied by ultrafast spectroscopy. High molar mass polymer (HMM > 20 kg/mol) forms nanoparticles with around 50 nm diameter via mini-emulsion post-polymerization, while low molar mass (LMM < 5 kg/mol) polymer prepared by dispersion polymerization results in particles with a diameter of almost one order of magnitude larger (450 ± 50 nm). In this study, the presence of excited-states and charge separated species was identified through UV pump and visible/near-infrared probe femtosecond transient absorption spectroscopy. A different behavior for the HMM nanoparticles has been identified compared to the LMM mesoparticles. The nanoparticles exhibit typical features of an energetically disordered conjugated polymer with a broad density of states, allowing for delayed spectral relaxation of excited states, while the mesoparticles show a J-aggregate-like behavior where interchain interactions are less efficient. Stimulated emission in the red-near infrared region has been found in the mesoparticles which indicates that theypresent a more energetically ordered system.
dc.language.isoen
dc.publisherFrontiers
dc.subject.entransient absorption spectroscopy
dc.subject.enPCDTBT
dc.subject.ennanoparticles
dc.subject.ensemiconducting polymers
dc.subject.enoptoelectronics
dc.title.enSize-Dependent Photophysical Behavior of Low Bandgap Semiconducting Polymer Particles
dc.typeArticle de revue
dc.identifier.doi10.3389/fchem.2019.00409
dc.subject.halChimie/Polymères
bordeaux.journalFrontiers in Chemistry
bordeaux.volume7
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-02152136
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02152136v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Frontiers%20in%20Chemistry&amp;rft.date=2019&amp;rft.volume=7&amp;rft.eissn=2296-2646&amp;rft.issn=2296-2646&amp;rft.au=VIRGILI,%20Tersilla&amp;BOTTA,%20Chiara&amp;MR%C3%93Z,%20Marta&amp;PARRENIN,%20Laurie&amp;BROCHON,%20Cyril&amp;rft.genre=article


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