Kuhrt Robert, Ho Po-Yuen, Hantusch Martin, Lissel Franziska, Blacque Olivier, Knupfer Martin, Büchner Bernd
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden Helmholtzstr. 20 01069 Dresden Germany
Leibniz-Institut für Polymerforschung Dresden Hohe Str. 6 01069 Dresden Germany.
RSC Adv. 2020 Nov 27;10(70):43242-43247. doi: 10.1039/d0ra08390a. eCollection 2020 Nov 23.
A novel ruthenium-acetylide complex was synthesised and characterised in solid state and solution. Thin films of the complex were evaporated on silver and gold foils in ultra high vacuum in order to probe the electronic properties with photoemission spectroscopy. The charge transfer characteristics of the complex with the strong acceptor FTCNNQ were investigated by UV-vis absorption in solution as well as at an interface with photoemission spectroscopy. A new excitation in the former optical gap of the pristine materials was probed in solution. Moreover, it was possible to identify the oxidised complex as well as the reduced acceptor by X-ray photoemission spectroscopy. In particular, our data reveal that oxidation of the complex mainly occurs at the Ru centre. The charge transfer can be characterised as localised and mainly ionic although signs of a reaction of the acceptors aminogroups with the ruthenium-acetylide complex were found.
合成了一种新型钌-乙炔配合物，并对其固态和溶液状态进行了表征。在超高真空中将该配合物薄膜蒸发到银箔和金箔上，以便用光电子能谱探测其电子性质。通过溶液中的紫外-可见吸收以及用光电子能谱在界面处研究了该配合物与强受体FTCNNQ的电荷转移特性。在溶液中探测了原始材料前光学带隙中的新激发。此外，通过X射线光电子能谱可以识别氧化的配合物以及还原的受体。特别是，我们的数据表明配合物的氧化主要发生在Ru中心。尽管发现受体氨基与钌-乙炔配合物有反应迹象，但电荷转移可表征为局域化且主要是离子性的。
