THESIS
2015
Abstract
Atomic registry of bilayer graphene can significantly modify their electronic structure
and properties. In our work, the experimental observation of the electron transfer chemistry
on bilayer graphene is significantly modified by investigating the twist-induced chemical
reactivity through chemical functionalization with diazonium salts. Our results have shown
that reaction rate for diazonium salt is relatively much higher on twisted graphene bilayer than
that on AB stacking (Bernal stacked). Gerischer−Marcus electron transfer theories analysis,
along with band structures of twisted bilayer graphene calculated by density functional theory
(DFT), has indicated that different reactivity is mainly contributed from the distinct
stacking-induced DOS distribution variation in the gap...[
Read more ]
Atomic registry of bilayer graphene can significantly modify their electronic structure
and properties. In our work, the experimental observation of the electron transfer chemistry
on bilayer graphene is significantly modified by investigating the twist-induced chemical
reactivity through chemical functionalization with diazonium salts. Our results have shown
that reaction rate for diazonium salt is relatively much higher on twisted graphene bilayer than
that on AB stacking (Bernal stacked). Gerischer−Marcus electron transfer theories analysis,
along with band structures of twisted bilayer graphene calculated by density functional theory
(DFT), has indicated that different reactivity is mainly contributed from the distinct
stacking-induced DOS distribution variation in the gap region. Our results provide
experimental venue that allows the selective separation and sort of bilayer graphene according
to the stacking modes by electron transfer reactions.
Post a Comment