Organic semiconductor core-shell nanoparticles designed through successive solvent displacements

Abstract : This study reports for the first time the elaboration of core-shell organic nanoparticles through successive solvent displacements. The concept has been applied to generate donor-acceptor nanoparticles with the commonly used organic semiconductors P3HT and PCBM. The strategy is based on the sequential nanoprecipitation of P3HT and PCBM. Starting from a P3HT: PCBM solution in THF, the first solvent displacement with DMSO triggers the formation of the P3HT core while the second displacement with water generates the PCBM shell. The core-shell morphology is evidenced by both DLS and TEM. Efficient quenching of the P3HT photoluminescence is observed after the second solvent displacement procedure, confirming the formation of a well-defined PCBM shell around the P3HT core. Studying the emission of such core-shell nanoparticles leads to an estimation of the diffusion length of photogenerated excitons in P3HT of around similar to 14 nm.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01373377
Contributor : Dominique Richard <>
Submitted on : Wednesday, September 28, 2016 - 4:03:49 PM
Last modification on : Thursday, January 11, 2018 - 6:28:10 AM

Identifiers

Citation

Sylvain Chambon, Christophe Schatz, Vivien Sébire, Bertrand Pavageau, Guillaume Wantz, et al.. Organic semiconductor core-shell nanoparticles designed through successive solvent displacements . Materials Horizons, cRoyal Society of Chemistry, 2014, 1 (4), pp.431-438. ⟨10.1039/c4mh00021h ⟩. ⟨hal-01373377⟩

Share

Metrics

Record views

127