Web Release Date: February 16,
Molecule-Precision Cavity Formation in Molecular Layer Using Scanning Tunneling Microscope Lithography
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Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1, Katahira, Aoba, Sendai, 980-0877 Japan, and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Received: November 1, 2007
In Final Form: December 27, 2007
Abstract:
We have demonstrated a cavity formation with molecular precision in an ordered film of 4,4'-biphenyl dicarboxylic acid (BDA) molecules on the Au(111) surface using scanning tunneling microscopy. The BDA molecules are removed through the injection of tunneling electrons into the molecule, which excite the vibrational mode of the BDA molecule to cleave the hydrogen bonding between carboxyl groups. The structures have molecular-scale sharp edges and can be used as cavities for the investigation of a host-guest architecture on surfaces.
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