oligo(phenyleneethynylene)s (OPEs) have been synthesized in the past, as they are considered as prototypes of molecular wires. When the oligomers are capped by a redox site at one end and a thiol at the other end, the resulting molecules can be grafted as a self-assembled monolayer on a gold electrode and fully studied by electrochemical techniques. Unfortunately, such molecules are usually poorly soluble and
过去已经合成了各种低聚(亚苯基亚
乙炔基)(OPE),因为它们被认为是分子线的原型。当低聚物的一端被氧化还原位点封端,另一端被巯基封端时,所得分子可作为自组装单分子层接枝到
金电极上,并通过电
化学技术进行了充分研究。不幸的是,这样的分子通常溶解性差并且需要掺入可溶的侧基。在本文中,我们表明,阳离子有机
金属
钌配合物[Ru(bipy)(2)(ppH)](+)(bipy,2,2'-bipyridine; ppH 2-(2'-基-苯基)
吡啶)可以精确合成长达四个重复单元的未取代
硫代乙酸酯封端的OPE。正电荷不会干扰用于延长,纯化或表征分子
六氟磷酸盐的常规有机
化学。据我们所知,这是为自组装设计的第一个长的,取代不良的OPE系列。