posted 11 Jul 2011, 00:37 by Peter Bøggild
Two-dimensional (2D) nanomaterials, which possess nanoscale dimension only in thickness and infinite length in the plane, have attracted tremendous attention owing to their unique properties and potential applications in the areas of electronics, sensors as well as energy storage and conversion. In particular, recent investigations of graphene, a 2D “aromatic” monolayer of carbon atoms, have demonstrated exceptional physical properties including ultrahigh electron mobility and ballistic charge carrier transport. These have triggered wide interest in 2D nanosheets other than carbons. In most cases, the above nanosheets have been generated from delamination of their materials with layered structures, thereby the product yields are generally low due to the limitations of the fabrication method adopted. Here we present a bottom-up assembly approach to the large-scale production of 2D nanosheets based on chemically derived graphene. The resulting 2D nanosheets possess a large aspect ratio, mesoporous structure, high surface area and high monodispersity. These materials may hold great potential across the ranges of electronics, catalysis, sensors, supercapacitors and batteries.
1) Yang, S. B.; Feng, X. L.; Wang, L.; Tang, K.; Maier, J.; Müllen, K. Angew. Chem. Int. Ed. 2010,
Xinliang Feng joined the group of Prof. K. Müllen at the Max Planck Institute for
Polymer Research for PhD thesis on the synthesis and supramolecular chemistry
of novel polycyclic aromatic hydrocarbons, where he obtained his PhD degree in April
2008. Since December 2007, he was appointed as project leader at the Max Planck Institute for
Polymer Research, and since 2011, he became a professor at the Shanghai Jiao Tong University. His
current scientific interests include the synthesis and self-organization of
extended graphene molecules, novel conjugated oligomers and polymers, and testing for applications in
organic electronic devices, fabrication of solution processable graphene sheets for transparent
electrodes, graphene-based 2D nanomaterials and low-dimensional nanostructured functional carbon-rich as well as hybrid materials for energy storage and conversion.