Rusch Talina R, Hammerich Melanie, Herges Rainer, Magnussen Olaf M
Institute of Experimental and Applied Physics, Kiel University, Kiel, Germany.
Chem Commun (Camb). 2019 Aug 7;55(64):9511-9514. doi: 10.1039/c9cc04528g.
Controlled attachment of photoswitchable molecules to solid surfaces is a promising route for the realization of complex machine-like molecular functions. A central next step here is the preparation of adlayers with multiple chemical functions that have defined intermolecular spacings and orientations and interact with each other in a controlled way, resulting in novel advanced system properties. We demonstrate that this is possible using molecular platforms with vertical functional units. Employing molecular components with identical triazatriangulenium-based units, we prepared mixed adlayers of platforms carrying a stable photoswitch and bare platforms, platforms with vertical pyridine units, and platforms with metastable switches, respectively. All these mixed layers are highly hexagonally ordered, can be easily varied in composition, and exhibit a stochastic arrangement of the two molecular components.
将可光开关分子可控地附着到固体表面是实现复杂的类机器分子功能的一条很有前景的途径。在此，核心的下一步是制备具有多种化学功能的吸附层，这些吸附层具有确定的分子间距和取向，并以可控方式相互作用，从而产生新颖的先进系统特性。我们证明，使用具有垂直功能单元的分子平台可以实现这一点。利用具有相同基于三氮杂三蝶烯鎓单元的分子组分，我们分别制备了带有稳定光开关的平台与裸平台、带有垂直吡啶单元的平台以及带有亚稳态开关的平台的混合吸附层。所有这些混合层都具有高度的六边形有序性，组成易于变化，并且两种分子组分呈现随机排列。
