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Adjacent graphene oxide nanosheets in a thin‐film structure have been covalently cross‐linked in a fashion similar to the cell walls of higher‐order plants. The resulting ultra‐stiff structure exhibits a maximum storage modulus of 127 GPa that can be tuned by varying borate concentration.
Conductive “alkylated” graphene paper is prepared by post‐fabrication modification of graphene oxide paper with hexylamine followed by hydrazine reduction in a one‐pot process. The “alkylation” with hexylamine stabilizes the stacked paper structure during the reduction, maintaining its well‐ordered morphology and resulting in uniform conductivity and good mechanical properties.
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