| Construction of two-dimensional hydrogen clusters on Au（111） directed by phthalocyanine molecules |
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| 作者姓名： | Kai Yang Wende Xiao Liwei Liu Xiangmin Fei Hui Chen Shixuan Du Hong-Jun Gao |
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| 作者单位： | Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| 基金项目： | This work was financially supported by the National Natural Science Foundation of China （Nos. 51210003 and 11290165）, National Basic Research Program of China （No. 2009CB929103）, TRR61 and Chinese Academy of Sciences. |
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| 摘 要： | Low-dimensional H2 aggregates have been successfully fabricated on Au（111） surfaces and investigated by means of low temperature scanning tunneling microscopy. We use manganese phthalocyanine （MnPc） molecules anchored on the Au（111） surface to efficiently collect and pin hydrogen molecules. A two-dimensional （2D） molecular hydrogen cluster is formed around the MnPc. The hydrogen cluster exhibits bias-dependent topography and spatial-dependent conductance spectra, which are rationalized by the exponentially decreasing threshold energy with distance from the central MnPc to activate the motion of the H2 molecules. This exponential drop reveals an interfacial phase behavior in the 2D cluster.
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| 关 键 词： | 氢分子 酞菁锰 Au 团簇 氢气 二维 扫描隧道显微镜 建筑 |
Construction of two-dimensional hydrogen clusters on Au(111) directed by phthalocyanine molecules |
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| Kai Yang Wende Xiao Liwei Liu Xiangmin Fei Hui Chen Shixuan Du Hong-Jun Gao.Construction of two-dimensional hydrogen clusters on Au(111) directed by phthalocyanine molecules[J].Nano Research,2014,7(1):79-84. |
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| Authors: | Kai Yang Wende Xiao Liwei Liu Xiangmin Fei Hui Chen Shixuan Du Hong-Jun Gao |
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| Affiliation: | 1. Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
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| Abstract: | Low-dimensional H2 aggregates have been successfully fabricated on Au(111) surfaces and investigated by means of low temperature scanning tunneling microscopy. We use manganese phthalocyanine (MnPc) molecules anchored on the Au(111) surface to efficiently collect and pin hydrogen molecules. A two-dimensional (2D) molecular hydrogen cluster is formed around the MnPc. The hydrogen cluster exhibits bias-dependent topography and spatial-dependent conductance spectra, which are rationalized by the exponentially decreasing threshold energy with distance from the central MnPc to activate the motion of the H2 molecules. This exponential drop reveals an interfacial phase behavior in the 2D cluster. ![src=]() |
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| Keywords: | hydrogen manganese phthalocyanine Au（111） interfacial phase scanning tunnelingmicroscopy |
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