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Materials chemistry and physics v.211, 2018년, pp.399 - 405  

Novel carbon nanospheres and poly(9-vinylcarbazole) composites: Synthesis, structural and photo-physical properties of films elaboration

Mbarek, M. (Corresponding author. ) ; Ghnimi, M. ; Abbassi, F. ; Alimi, K. ;
  • 초록  

    Abstract The photophysical and structural properties of poly(9-vinylcarbazole) and carbon nanospheres (CNS) based composites are investigated. The effect of CNS on the optical and vibrational properties of the new synthesized composite with several concentration weights (1.7, 3 and 5%) and also charge transfer process were examined by various optical and structural characterizations. Scanning and transmission electron microscopy were indented to show the morphology of CNS and their distribution on PVK matrix. States and time resolved photoluminescence decays of composites were used to evidence the charge transfer and dynamical properties of their excited states. The stability and the graphitized degree of CNS were found by Raman scattering analysis. Highlights Film composites morphology and CNSs dispersity are determined by SEM and TEM. Raman analysis was used to study stability and the degree of graphitized of CNSs. Vibrational analysis was used to examine the functionalization of CNS with PVK. Charge transfer was studied by stationary and transient photoluminescence. The non-radiative pathway is the preferred one of photo-generated excitons. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    CNS .   Composite .   Raman .   Optical properties .   Charge transfer.  

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