新型材料石墨烯组装研究进展

石墨烯是近几年研究的一种具有二维平面结构的热门材料,它具有单电子结构,有很多特殊的物理和化学的性质。关于石墨烯的制备,功能化及应用方面的研究已经成为当前的前沿和热点课题。关于石墨烯组装的研究目前还没有制备方面成熟。主要介绍了几种石墨烯组装的方法并对其进行了展望,包括有机小分子组装,共聚组装,LB技术组装,非共价键组装。组装后的石墨烯具有了一些新的性质和功能,溶解性得到了极大的改善。     

Cover Picture: Toroidal Micelles of Uniform Size from Diblock Copolymers (Angew. Chem. Int. Ed. 25/2009)

Pure toroidal micelles of highly uniform shape and size are presented by T. Chang et al. in their Communication on page 4594 ff. The donut‐shaped micelles are prepared by spontaneous self‐assembly of a polyisoprene‐block‐poly(2‐vinylpyridine) copolymer, and are stable enough to act as a template for the growth of gold nanoparticles along the ring surface.

     

Cover Picture: Solid‐State Scrolls from Hierarchical Self‐Assembly of T‐Shaped Rod–Coil Molecules (Angew. Chem. Int. Ed. 9/2009)

Solid scrolls are reversibly formed by self‐assembly of rod‐shaped molecules with laterally attached coil units, in contrast to the layered structures formed from self‐assembly of planar molecules. As described by M. Lee and co‐workers in their Communication on page 1664 ff., the core structure of the scrolls, which are either filled cylinders or hollow tubes, can be controlled by variation of the length of the coil unit. The cover picture shows aligned tubular scrolls displaying well‐defined in‐plane ordering of the rod segments.