Positioning and Switching Phthalocyanine Molecules on a Cu(100) Surface at Room Temperature

Reversible molecular switches with molecular orientation as the information carrier have been achieved on individual phthalocyanine (H2Pc) molecules adsorbed on a Cu(100) surface at room temperature. Scanning tunneling microscopy (STM) imaging directly demonstrates that H2Pc molecules can be control...

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Bibliographic Details
Published in:ACS nano 2014-12, Vol.8 (12), p.12734-12740
Main Authors: Liu, Juan, Li, Chao, Liu, Xiaoqing, Lu, Yan, Xiang, Feifei, Qiao, Xuelei, Cai, Yingxiang, Wang, Zhongping, Liu, Sanqiu, Wang, Li
Format: Article
Language:English
Subjects:
Arrays
Control surfaces
MICROSTRUCTURES
Nanostructure
Orientation
Scanning tunneling microscopy
Surface chemistry
Switches
Switching
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Summary:Reversible molecular switches with molecular orientation as the information carrier have been achieved on individual phthalocyanine (H2Pc) molecules adsorbed on a Cu(100) surface at room temperature. Scanning tunneling microscopy (STM) imaging directly demonstrates that H2Pc molecules can be controlled to move along the [011] or [011̅] surface direction of the Cu(100) surface, and the orientation of H2Pc molecules can also be switched between two angles of ±28° with respect to the [011] surface direction by a lateral manipulation. Owing to the highly efficient control over the adsorption site and orientation of H2Pc adsorbed on the Cu(100) surface by lateral manipulation, a pyramidal array formed by 10 H2Pc molecules has been constructed on the Cu surface as a prototype of binary memory, and every molecule within such a molecular array can be individually and reversibly controlled by a STM tip.
ISSN:1936-0851
1936-086X
DOI:10.1021/nn5058535