Isolated supramolecules on surfaces studied with scanning tunneling microscopy

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• 作者：Chao Xie^a ; Qi-Meng Wu^b ; Ruo-Ning Li^c ; Gao-Chen Gu^a ; Xue Zhang^a ; Na Li^a ; Richard Berndt^d ; Jö ; rg Krö ; ger^e ; Zi-Yong Shen^a ; ^{zyshen@pku.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Shi-Min Hou^a ; ^f ; Yong-Feng Wang^a ; ^f ; ^{yongfengwang@pku.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Supramolecular aggregations ; Scanning tunneling microscope (STM) ; Weak interactions ; Self-assembly ; Fractal ; Sierpinski triangle
• 刊名：Chinese Chemical Letters
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：27
• 期：6
• 页码：807-812
• 全文大小：2255 K

文摘

To date, supramolecular chemistry is an ever growing research field owing to its crucial role in molecular catalysis, recognition, medicine, data storage and processing as well as artificial photosynthetic devices. Different isolated supramolecules were prepared by molecular self-assembly on surfaces. This review mainly focuses on supramolecular aggregations on noble metal surfaces studied by scanning tunneling microscopy, including dimers, trimers, tetramers, pentamers, wire-like assemblies and Sierpiński triangular fractals. The variety of self-assembled structures reflects the subtle balance between intermolecular and molecule–substrate interactions, which to some extent may be controlled by molecules, substrates and the molecular coverage. The comparative study of different architectures helps identifying the operative mechanisms that lead to the structural motifs. The application of these mechanisms may lead to novel assemblies with tailored physicochemical properties.