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Positioning and switching phthalocyanine molecules on a Cu(100) surface at room temperature

ACS Nano, ISSN: 1936-086X, Vol: 8, Issue: 12, Page: 12734-12740
2014
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Article Description

Reversible molecular switches with molecular orientation as the information carrier have been achieved on individual phthalocyanine (HPc) molecules adsorbed on a Cu(100) surface at room temperature. Scanning tunneling microscopy (STM) imaging directly demonstrates that HPc molecules can be controlled to move along the [011] or [011] surface direction of the Cu(100) surface, and the orientation of HPc 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 HPc adsorbed on the Cu(100) surface by lateral manipulation, a pyramidal array formed by 10 HPc 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.

Bibliographic Details

Liu, Juan; Li, Chao; Liu, Xiaoqing; Lu, Yan; Xiang, Feifei; Qiao, Xuelei; Cai, Yingxiang; Wang, Zhongping; Liu, Sanqiu; Wang, Li

American Chemical Society (ACS)

Materials Science; Engineering; Physics and Astronomy

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