“Janus-type” Ruthenium Complex Bearing Both Phosphonic Acids and Pyrene Groups for Functionalization of ITO and HOPG Surfaces
作者:Li Yang、Hiroaki Ozawa、Mayuko Koumoto、Kai Yoshikawa、Mariko Matsunaga、Masa-aki Haga
DOI:10.1246/cl.140979
日期:2015.2.5
A novel Janus-type ruthenium complex bearing both phosphonic acid and pyrene groups was tethered to both ITO and HOPG surfaces in different tethering modes. On the ITO surface, the phosphonic groups were selectively attached to the ITO, resulting in the hydrophobic surface because of the exposed pyrene groups on the top. On the other hand, on the HOPG surface, pyrene groups interacted with the HOPG surface through noncovalent interaction, resulting in a hydrophilic surface exposing phosphonic acid groups. This selectivity makes it possible to fabricate redox-active ruthenium complex and graphene composite by layer-by-layer growth of molecular units.
一种新型含膦酸和芘基团的Janus型钌配合物,以不同的接枝方式分别接枝到ITO和HOPG表面。在ITO表面,膦酸基团选择性地吸附在ITO上,由于暴露在外的芘基团,形成了疏水表面。另一方面,在HOPG表面,芘基团通过非共价相互作用与HOPG表面发生作用,使得膦酸基团暴露在外,形成了亲水表面。这种选择性使得通过逐层生长分子单元的方式,制备含有氧化还原活性的钌配合物和石墨烯复合材料成为可能。