CNRS, CEMES (Centre d'Elaboration des Matériaux et d'Etudes Structurales), B.P. 94347, 29 rue Jeanne Marvig, F-31055 Toulouse, France.
Phys Rev Lett. 2011 May 27;106(21):216103. doi: 10.1103/PhysRevLett.106.216103.
Scanning tunneling microscopy and dynamic force microscopy in the noncontact mode are used in combination to investigate the reversible switching between two stable states of a copper complex adsorbed on a NaCl bilayer grown on Cu(111). The molecular conformation in these two states is deduced from scanning tunneling microscopy imaging, while their charge is characterized by the direct measurement of the tip-molecule electrostatic force. These measurements demonstrate that the molecular bistability is achieved through a charge-induced rearrangement of the coordination sphere of the metal complex, qualifying this system as a new electromechanical single-molecular switch.
扫描隧道显微镜和动态力显微镜在非接触模式下结合使用，用于研究吸附在 Cu(111)上生长的 NaCl 双层上的铜配合物在两种稳定状态之间的可逆切换。这两种状态下的分子构象从扫描隧道显微镜成像中推断出来，而它们的电荷则通过直接测量针尖-分子静电力来表征。这些测量证明，分子双稳定性是通过金属配合物的配位球的电荷诱导重排实现的，这使该系统成为一种新的机电单分子开关。
