Carbon Nano-onions: Potassium Intercalation and Reductive Covalent Functionalization.

ABSTRACT: Herein we report the synthesis of covalently functionalized carbon nano-onions (CNOs) via a reductive approach using unprecedented alkali-metal CNO intercalation compounds. For the first time, an in situ Raman study of the controlled intercalation process with potassium has been carried out revealing a Fano resonance in highly doped CNOs. The intercalation was further confirmed by electron energy loss spectroscopy and X-ray diffraction. Moreover, the experimental results have been rationalized with DFT calculations. Covalently functionalized CNO derivatives were synthesized by using phenyl iodide and n-hexyl iodide as electrophiles in model nucleophilic substitution reactions. The functionalized CNOs were exhaustively characterized by statistical Raman spectroscopy, thermogra

SUBMITTER: Perez-Ojeda ME 

PROVIDER: S-EPMC8603384 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature