Adlayer structure of TCNQ molecules on Cu(111): Anin situ STM study |
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Authors: | Lijun Wan Itaya Kingo |
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Institution: | (1)Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080 ,China;
(2)Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai, Japan ,China |
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Abstract: | In situ electrochemical scanning tunneling microscopy (STM) was employed to examine tetracyano- quinodimethane (TCNQ) layer adsorbed on Cu(111) electrode surface in 0.1 mol/L HClO4 solution. The TCNQ molecules are found to form highly-ordered long range adlayer with a (4×4) symmetry. Each TCNQ molecule is adsorbed on Cu(111) surface in flat-lying orientation. The molecules are preferentially aligned with their long axes in the 121] direction. A structural model is proposed for the adlayer. |
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Keywords: | TCNQ molecule electrochemical scanning tunneling microscopy Cu(111) adlayer structure |
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