Napredna pretraga

Pregled bibliografske jedinice broj: 1013823

Light-enhanced liquid-phase exfoliation and current photoswitching in graphene–azobenzene composites


Döbbelin, Markus; Ciesielski, Artur; Haar, Sébastien; Osella, Silvio; Bruna, Matteo; Minoia, Andrea; Grisanti, Luca; Mosciatti, Thomas; Richard, Fanny; Prasetyanto, Eko Adi et al.
Light-enhanced liquid-phase exfoliation and current photoswitching in graphene–azobenzene composites // Nature Communications, 7 (2016), 1; 11090, 10 doi:10.1038/ncomms11090 (međunarodna recenzija, članak, znanstveni)


Naslov
Light-enhanced liquid-phase exfoliation and current photoswitching in graphene–azobenzene composites

Autori
Döbbelin, Markus ; Ciesielski, Artur ; Haar, Sébastien ; Osella, Silvio ; Bruna, Matteo ; Minoia, Andrea ; Grisanti, Luca ; Mosciatti, Thomas ; Richard, Fanny ; Prasetyanto, Eko Adi ; De Cola, Luisa ; Palermo, Vincenzo ; Mazzaro, Raffaello ; Morandi, Vittorio ; Lazzaroni, Roberto ; Ferrari, Andrea C. ; Beljonne, David ; Samorì, Paolo

Izvornik
Nature Communications (2041-1723) 7 (2016), 1; 11090, 10

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Multifunctional materials

Sažetak
Multifunctional materials can be engineered by combining multiple chemical components, each conferring a well-defined function to the ensemble. Graphene is at the centre of an ever-growing research effort due to its combination of unique properties. Here we show that the large conformational change associated with the trans–cis photochemical isomerization of alkyl-substituted azobenzenes can be used to improve the efficiency of liquid-phase exfoliation of graphite, with the photochromic molecules acting as dispersion-stabilizing agents. We also demonstrate reversible photo-modulated current in two-terminal devices based on graphene–azobenzene composites. We assign this tuneable electrical characteristics to the intercalation of the azobenzene between adjacent graphene layers and the resulting increase in the interlayer distance on (photo)switching from the linear trans-form to the bulky cis-form of the photochromes. These findings pave the way to the development of new optically controlled memories for light-assisted programming and high-sensitive photosensors.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Autor s matičnim brojem:
Luca Grisanti, (372573)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati