6533b851fe1ef96bd12a995a
RESEARCH PRODUCT
Thiophene pyrenyl derivatives for the supramolecular processability of single-walled carbon nanotubes in thin film heterojunction
Daniele GragnatoSebastiano CataldoPatrizio SaliceCamillo SartorioEnzo MennaBruno PignataroRoberto ImprotaMichelangelo ScopellitiViviana Figasubject
Materials Chemistry2506 Metals and AlloysNanotubeMaterials scienceCarbon nanotubes02 engineering and technologyCarbon nanotube010402 general chemistryPhotochemistry01 natural sciencesCarbon nanotubePhotoinduced electron transferlaw.inventionchemistry.chemical_compoundElectron transferCarbon nanotubes; Fluorescence quenching; Heterojunctions; Organic photovoltaics; Pyrene; Electronic Optical and Magnetic Materials; Condensed Matter Physics; Mechanics of Materials; Mechanical Engineering; 2506; Materials Chemistry2506 Metals and AlloyslawElectronicMaterials ChemistryThiopheneMoietyOptical and Magnetic MaterialsAlkylSettore CHIM/02 - Chimica Fisicachemistry.chemical_classificationPyreneMechanical EngineeringMetals and AlloysSettore CHIM/05 - Scienza E Tecnologia Dei Materiali PolimericiSettore CHIM/06 - Chimica Organica021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesElectronic Optical and Magnetic MaterialsFluorescence quenchingOrganic semiconductorchemistrySettore CHIM/03 - Chimica Generale E InorganicaMechanics of MaterialsOrganic photovoltaicsHeterojunctionsHeterojunctionOrganic photovoltaic25060210 nano-technologydescription
Abstract A major problem for the use of single-wall carbon nanotubes (SWCNTs) in electronic devices relates to their poor processability. Chemical modification inevitably introduces defects in the nanotube lattice, resulting in a loss of electronic properties. In this contest, we report on a supramolecular approach with the aim of increasing the dispersion of SWCNTs in solution and in organic semiconductor matrices by ensuring the optoelectronic properties. In particular, new pyrenyl derivatives of thiophene have been synthesized and used to improve the solubility of SWCNTs for electron transfer in thin film heterojunction with poly(3-hexylthiophene) (P3HT) as donor system. Photoinduced electron transfer to SWCNTs has been demonstrated and the effect of different alkyl spacers, between the pyrene unit and the thiophene moiety, has revealed to play a key role. Electron transfer has been maximized by the compound with a spacer coplanar with the pyrene moiety due to the reduced separation between P3HT and SWCNTs.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-01 | Synthetic Metals |