• 文献标题:   A film-forming graphene/diketopyrrolopyrrole covalent hybrid with far-red optical features: Evidence of photo-stability
  • 文献类型:   Article
  • 作  者:   ZHENG M, LAMBERTI F, FRANCO L, COLLINI E, FORTUNATI I, BOTTARO G, DANIEL G, SORRENTINO R, MINOTTO A, KUKOVECZ A, MENNA E, SILVESTRINI S, DURANTE C, CACIALLI F, MENEGHESSO G, MAGGINI M, GATTI T
  • 作者关键词:   functional nanocarbon hybrid, liquid exfoliated graphene, diketopyrrolopyrrole, nanocomposite, hybrid nanomaterial
  • 出版物名称:   SYNTHETIC METALS
  • ISSN:   0379-6779
  • 通讯作者地址:   Justus Liebig Univ Giessen
  • 被引频次:   1
  • DOI:   10.1016/j.synthmet.2019.116201
  • 出版年:   2019

▎ 摘  要

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 material in the field of photoprotective, antistatic layers with tunable colors.