Approach to Precise Modification of Graphene Surface by Metal Complexes for Properties Control

石墨烯不仅在化学、物理等基础科学领域，而且在包括电子材料在内的功能材料应用技术领域，近年来引起了许多研究人员的极大关注。我们合成了三角形多金属络合物和盒状金属络合物来修饰石墨烯表面，以制备更多功能化的石墨烯衍生物。这两种金属络合物可能通过pi-pi相互作用和阳离子-pi相互作用识别大分子芳香族化合物。特别是，三角配体及其络合物被吸附在石墨表面作为石墨烯的模型化合物。这种利用金属络合物的方法将为石墨烯的表面修饰开辟一条新的途径。

Graphene has recently attracted considerable attention to many researchers in fields not only of basic science such as chemistry and physics but also of applied technology of functional materials including electronic materials. We have synthesized triangular multi-metal complexes and box-shaped metal complexes for modifying graphene surface to prepare more functionalized grapheme derivatives. These two kinds of metal complexes recognize large aromatic compounds probably due to pi-pi interactions and cation-pi interactions. In particular, the triangular ligand and its complex were adsorbed on graphite surface as a model compound for graphene. This method using these metal complexes would open a new way to modify the surface of graphene.