Journal
ACS NANO
Volume 8, Issue 12, Pages 12734-12740Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn5058535
Keywords
molecular switches; scanning probe microscopy; molecular orientation; manipulation
Categories
Funding
- Natural Science Foundation of China [61474059, U1432129]
- National Key Basic Research Program of China [2013CB934200]
- International S&T Cooperation Program of China [S2014ZR0016]
- Program for New Century Excellent Talents in University, Ministry of Education of China [NCET-11-1003]
- Jiangxi Provincial Ganpo Talentes 555 Projects
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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 [011] surface direction of the Cu(100) surface, and the orientation of H2Pc molecules can also be switched between two angles of +/- 28 degrees 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.
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