Hydrogen-Driven Cage Unzipping of C₆₀ into Nano-Graphenes.

ABSTRACT: Annealing of C₆₀ in hydrogen at temperatures above the stability limit of C-H bonds in C₆₀H _x (500-550 °C) is found to result in direct collapse of the cage structure, evaporation of light hydrocarbons, and formation of solid mixture composed of larger hydrocarbons and few-layered graphene sheets. Only a minor part of this mixture is soluble; this was analyzed using matrix-assisted laser desorption/ionization MS, Fourier transform infrared (FTIR), and nuclear magnetic resonance spectroscopy and found to be a rather complex mixture of hydrocarbon molecules composed of at least tens of different compounds. The sequence of most abundant peaks observed in MS, which corresponds to C₂H₂ mass difference, suggests a stepwise breakup of

SUBMITTER: Talyzin AV 

PROVIDER: S-EPMC3970553 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature