SIM-RUC
Surface & Interface Modeling
for Emerging Nanomaterials and Devices

Observation of structural and conductance transition of rotaxane molecules at a submolecular scale

Min Feng, Li Gao, Shixuan Du, Zhitao Deng, Zhihai Cheng, Wei Ji, Deqing Zhang, Xuefeng Guo, Xiao Lin, Lifeng Chi, Daoben Zhu, Harald Fuchs, and Hongjun Gao*

Institute of Physics, Chinese Academy of Sciences

Institute of Chemistry, Chinese Academy of Sciences

Physikalisches Institute/CeNTech, Universität Münster
 
Z. H. Cheng, W. Ji, Dr. X. Lin
Institute of Physics, Chinese Academy of Sciences
PO Box 603, Beijing 100080 (P.R. China)
E-mail: hjgao@aphy.iphy.ac.cn
Prof. D. Q. Zhang, Dr. X. F. Guo, Prof. D. B. Zhu
Institute of Chemistry, Chinese Academy of Sciences
Beijing 100080 (P.R. China)
Prof. L. F. Chi, Prof. H. Fuchs
Physikalisches Institute/CeNTech, Universität Münster
48149 Münster (Germany)

DOI:10.1002/adfm.200600973    Publication Date: 9 Feb 2007


Abstract:

Rotaxane molecules have attracted considerable interest because of their good performance in both molecular electronic devices and nanoscale data-storage media. Low-temperature scanning tunneling microscopy is used to investigate the structur and conductance of single H2 rotaxane molecules on a buffer-layered Au(111) substrate at 77 K. It is demonstrated that the conductance switching in rotaxane-based, solid-state devices is an inherent property of the rotaxane molecules. These results provide evidence that the conductance switching might arise from the movement of the cyclobis(paraquat-p-phenylene) ring along the rod section of the dumbbell-shaped backbone of the rotaxane molecule.


Keywords:


View: Adv. Funct. Mater.   17, 770–776 (2007)     Local Copy

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