Schied Monika, Prezzi Deborah, Liu Dongdong, Jacobson Peter, Corni Stefano, Tour James M, Grill Leonhard
Department of Physical Chemistry, University of Graz, Heinrichstraße 28, 8010 Graz, Austria.
Nanoscience Institute of the National Research Council (CNR-NANO), via G. Campi 213/a, 41125 Modena, Italy.
J Phys Chem C Nanomater Interfaces. 2022 Jun 2;126(21):9034-9040. doi: 10.1021/acs.jpcc.2c00406. Epub 2022 May 18.
Molecular motors have been intensely studied in solution, but less commonly on solid surfaces that offer fixed points of reference for their motion and allow high-resolution single-molecule imaging by scanning probe microscopy. Surface adsorption of molecules can also alter the potential energy surface and consequently preferred intramolecular conformations, but it is unknown how this affects motor molecules. Here, we show how the different conformations of motor molecules are modified by surface adsorption using a combination of scanning tunneling microscopy and density functional theory. These results demonstrate how the contact of a motor molecule with a solid can affect the energetics of the molecular conformations.
分子马达已在溶液中得到深入研究，但在固体表面上的研究较少，固体表面为其运动提供了固定的参考点，并允许通过扫描探针显微镜进行高分辨率单分子成像。分子的表面吸附也会改变势能面，从而改变分子内的优势构象，但目前尚不清楚这对马达分子有何影响。在这里，我们结合扫描隧道显微镜和密度泛函理论，展示了表面吸附如何改变马达分子的不同构象。这些结果证明了马达分子与固体的接触如何影响分子构象的能量学。
