0000000000915074

AUTHOR

Roberto Improta

showing 2 related works from this author

Thiophene pyrenyl derivatives for the supramolecular processability of single-walled carbon nanotubes in thin film heterojunction

2017

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 ele…

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-technologySynthetic Metals
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On the trade-off between processability and opto-electronic properties of single wall carbon nanotube derivatives in thin film heterojunctions

2015

A flow functionalization route has been employed to derivatize single wall carbon nanotubes (SWCNTs) by thienylphenyl groups. The SWCNT derivatives in the most soluble fraction have been characterized by thermogravimetric analysis, DLS analysis, DFT calculations, and UV-vis-NIR, microRaman and IR spectroscopies to study the degree of functionalization, the concentration of SWCNTs in solution, the dimension of the aggregates in solutions, the density of defects, and the presence of the thienylphenyl groups. Thin-film heterojunctions made of SWCNT derivatives and poly(3-hexylthiophene) (P3HT) have been prepared by various methods employing the Langmuir–Schaefer technique, spin-coating and the…

Thermogravimetric analysisMaterials scienceHeterojunctionGeneral ChemistryCarbon nanotubelaw.inventionChemical engineeringlawMaterials ChemistryOpto electronicSurface modificationCarbon Nanotubes flow chemistry thin film heterojunctionsThin filmSolubilityComposite materialSettore CHIM/02 - Chimica Fisica
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