Well-defined aqueous nanostructures can be constructed by self-assembly of aromatic amphiphiles. Along this line, we have explored amphiphilic block molecules based on a planar aromatic sheet and a hydrophilic oligoether dendron. Additionally, we have made an effort to prove an influence of a small single alkyl chain which is attached at aromatic sheet. These small block molecules were synthesized through a multistep fashion starting from m-linked terphenyl units. These molecules showed to self-assemble into discrete nanostructures in aqueous solution through strengthened π-π stacking interactions of the flat aromatic segments. The aggregation behavior of the molecules has been characterized by cryo-TEM and DLS. We have also demonstrated that the molecules can selectively exfoliate graphite powder into graphene sheets in water. In this presentation, we will discuss the synthesis of the laterally-grafted molecular sheets and their self-assembly behavior in aqueous solution and the functionalization of graphene.
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 D.-W. Lee, T. Kim, M. Lee, Chem. Commun. 2011, 47, 8259