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Size-Dependent Photophysical Behavior of Low Bandgap Semiconducting Polymer Particles
| dc.rights.license | open | |
| dc.contributor.author | VIRGILI, Tersilla | |
| dc.contributor.author | BOTTA, Chiara | |
| dc.contributor.author | MRÓZ, Marta | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies | |
| dc.contributor.author | PARRENIN, Laurie | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies | |
| dc.contributor.author | BROCHON, Cyril | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies | |
| dc.contributor.author | CLOUTET, Eric
IDREF: 151048681 | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies | |
| dc.contributor.author | PAVLOPOULOU, Eleni | |
| hal.structure.identifier | Laboratoire de Chimie des Polymères Organiques [LCPO] | |
| hal.structure.identifier | Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies | |
| dc.contributor.author | HADZIIOANNOU, Georges | |
| hal.structure.identifier | Department of Physics and Astronomy [Sheffield] | |
| dc.contributor.author | GEOGHEGAN, Mark | |
| dc.date.accessioned | 2020 | |
| dc.date.available | 2020 | |
| dc.date.issued | 2019 | |
| dc.identifier.issn | 2296-2646 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/19871 | |
| dc.description.abstractEn | The 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.iso | en | |
| dc.publisher | Frontiers | |
| dc.subject.en | transient absorption spectroscopy | |
| dc.subject.en | PCDTBT | |
| dc.subject.en | nanoparticles | |
| dc.subject.en | semiconducting polymers | |
| dc.subject.en | optoelectronics | |
| dc.title.en | Size-Dependent Photophysical Behavior of Low Bandgap Semiconducting Polymer Particles | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3389/fchem.2019.00409 | |
| dc.subject.hal | Chimie/Polymères | |
| bordeaux.journal | Frontiers in Chemistry | |
| bordeaux.volume | 7 | |
| bordeaux.hal.laboratories | Laboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629 | * |
| bordeaux.institution | Bordeaux INP | |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02152136 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02152136v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers%20in%20Chemistry&rft.date=2019&rft.volume=7&rft.eissn=2296-2646&rft.issn=2296-2646&rft.au=VIRGILI,%20Tersilla&BOTTA,%20Chiara&MR%C3%93Z,%20Marta&PARRENIN,%20Laurie&BROCHON,%20Cyril&rft.genre=article |
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