A dianiline derivative of a symmetric donor-acceptor-donor diketopyrrolopyrrole-based dye is employed for the two-sided covalent functionalization of liquid exfoliated few layers graphene flakes, through a direct arylation reaction. The resulting nanohybrid features the properties of a polymeric species, being solution-processed into homogeneous thin films, featuring a pronounced red-shift of the main absorption band with respect to the model dye unit and energy levels comparable to those of common diketopyrrolopyrrole-based polymers. A good electrical conductivity and the absence of radical signals generated after intense white light illumination, as probed through electron paramagnetic resonance, suggest a possible future application of this composite ma- terial in the field of photoprotective, antistatic layers with tunable colors.
A film-forming graphene/diketopyrrolopyrrole covalent hybrid with far-red optical features: Evidence of photo-stability
Zheng M.;Lamberti F.;Franco L.;Collini E.;Fortunati I.;Bottaro G.;Daniel G.;Minotto A.;Menna E.;Silvestrini S.;Durante C.;Meneghesso G.;Maggini M.;Gatti T.
2019
Abstract
A dianiline derivative of a symmetric donor-acceptor-donor diketopyrrolopyrrole-based dye is employed for the two-sided covalent functionalization of liquid exfoliated few layers graphene flakes, through a direct arylation reaction. The resulting nanohybrid features the properties of a polymeric species, being solution-processed into homogeneous thin films, featuring a pronounced red-shift of the main absorption band with respect to the model dye unit and energy levels comparable to those of common diketopyrrolopyrrole-based polymers. A good electrical conductivity and the absence of radical signals generated after intense white light illumination, as probed through electron paramagnetic resonance, suggest a possible future application of this composite ma- terial in the field of photoprotective, antistatic layers with tunable colors.File | Dimensione | Formato | |
---|---|---|---|
SynthMetal PrePrint.pdf
accesso aperto
Descrizione: Articolo principale
Tipologia:
Preprint (submitted version)
Licenza:
Accesso gratuito
Dimensione
5.26 MB
Formato
Adobe PDF
|
5.26 MB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.