TERRACE INDUCED HOMOCHIRAL SELF-ASSEMBLY OF ZINC PHTHALOCYANINEON COPPER (111) SURFACE

Xin Song, Huihui Kong, Lacheng Liu, Xiaoqing Liu, Mingdong Dong and Li Wang ()
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Xin Song: Department of Materials Science and Engineering, Nanchang University, 999 Xue Fu Da Dao, Nanchang 330031, P. R. China†Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav WiedsVej 14, 8000 Aarhus C, Denmark
Huihui Kong: #x2021;Department of Physics, Nanchang University, 999 Xue FuDa Dao, Nanchang 330031, P. R. China
Lacheng Liu: #x2021;Department of Physics, Nanchang University, 999 Xue FuDa Dao, Nanchang 330031, P. R. China
Xiaoqing Liu: #x2021;Department of Physics, Nanchang University, 999 Xue FuDa Dao, Nanchang 330031, P. R. China
Mingdong Dong: #x2020;Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav WiedsVej 14, 8000 Aarhus C, Denmark
Li Wang: #x2021;Department of Physics, Nanchang University, 999 Xue FuDa Dao, Nanchang 330031, P. R. China

Surface Review and Letters (SRL), 2016, vol. 23, issue 06, 1-6

Abstract: It is still a challenge to find a suitable method to fabricate a well-defined homochiral surface from achiral molecules, and one of the possible methods is to modify surfaces with organic molecular assemblies. Large-area chiral self-assembly nanostructures have been observed at room temperature by depositing ZnPc molecules on a Cu(111) surface. The growth process has been investigated. ZnPc molecules get adsorbed first at the terrace steps, and then extend over the lower terrace until the whole terrace is covered with ZnPc molecules; such growth process would be stopped when the self-assembly nanostructure run into a decorated upper terrace step edge. We found that the terrace steps with specific directions with respect to the close-packed directions of the substrate can induce homochiral self-assembly on the lower terraces. So we can propose a possible way to fabricate a well-defined homochiral surface from achiral organic molecules.

Keywords: Homochirality; self-assembly; supramolecular structure; terrace; scanning tunnelling microscopy; metal surface (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1142/S0218625X16500475

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