1183292
doi
10.1021/acsnano.6b08176
oai:zenodo.org:1183292
user-cnr-isof-nanochem
user-eu
Zanelli, Alberto
CNR-ISOF
Liscio, Andrea
CNR-ISOF, CNR-ISC
Kovtun, Alessandro
CNR-ISOF
Salatelli, Elisabetta
Dpt. of Industrial Chemistry Toso Montanari, University of Bologna
Mazzaro, Raffaello
Dpt. of Chemistry Giacomo Ciamician, University of Bologna, CNR-IMM
Morandi, Vittorio
CNR-IMM
Bergamini, Giacomo
Dpt. of Chemistry Giacomo Ciamician, University of Bologna
Shaffer, Avshalom
School of Chemistry, Tel-Aviv University
Rozen, Shlomo
School of Chemistry, Tel-Aviv University
Poly(3-hexylthiophene) Nanoparticles Containing Thiophene-S,S-dioxide: Tuning of Dimensions, Optical and Redox Properties, and Charge Separation under Illumination
Di Maria, Francesca
CNR-ISOF
info:eu-repo/semantics/openAccess
Creative Commons Attribution Non Commercial 4.0 International
https://creativecommons.org/licenses/by-nc/4.0/legalcode
Polythiophene-S,S-dioxide
Rozen's reagent
organic nanoparticles
core-shell nanoparticles
heterojunction
Kelvin Probe
X-ray Photoelectron Spectroscopy
<p>We describe the preparation of poly(3-hexylthiophene-<em>S,S</em>-dioxide) nanoparticles using Rozen’s reagent - HOF·CH3CN - either on poly(3-hexylthiophene) (P3HT) or on preformed P3HT nanoparticles (P3HT-NPs). In the latter case core-shell nanoparticles (P3HT@PTDO-NPs) are formed, as confirmed by X-ray Photoelectron Spectroscopy measurements indicating the presence of oxygen on the outer shell. The different preparation modalities lead to a fine tuning of the chemical-physical properties of the nanoparticles. We show that absorption and photoluminescence features, electrochemical properties, size and stability of colloidal solutions can be finely modulated by controlling the amount of oxygen present. Atomic Force Microscopy measurements on the nanoparticles obtained by nanoprecipitation method from preoxidized P3HT (PTDO-NPs), display spherical morphology and dimensions down to 5 nm. Finally, Kelvin Probe measurements show that the coexistence of p- and n-type charge carriers in all types of oxygenated nanoparticles makes them capable to generate and separate charge under illumination. Furthermore, in core-shell nanoparticles the nanosegregation of the two materials, in different region of the nanoparticles, allows a more efficient charge separation.</p>
Zenodo
2018-02-22
info:eu-repo/semantics/article
1183291
user-cnr-isof-nanochem
user-eu
award_title=Integrated self-assembled SWITCHable systems and materials: towards responsive organic electronics – a multi-site innovative training action; award_number=642196; award_identifiers_scheme=url; award_identifiers_identifier=https://cordis.europa.eu/projects/642196; funder_id=00k4n6c32; funder_name=European Commission;
1579535769.03834
845100
md5:9fa207f665d5b5f64732e86b5bc5071e
https://zenodo.org/records/1183292/files/[ACS Nano] Poly(3-hexylthiophene) nanoparticles containing thiophene-S,S-dioxide.pdf
public