Surface- and Guest-Promoted Product Selection from a Dynamic Covalent Library: A Scanning Tunneling Microscopic Study

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• 作者：Jiang Sun ; Yanxia Yu ; Chunhua Liu ; Shengbin Lei
• 刊名：Journal of Physical Chemistry C
• 出版年：2017
• 出版时间：February 16, 2017
• 年：2017
• 卷：121
• 期：6
• 页码：3437-3444
• 全文大小：794K
• ISSN：1932-7455

文摘

Surface-assisted reaction has gained much attention in the field of nanoscience and nanotechnology, due largely to its irreplaceability in the fabrication of one- and two-dimensional polymers on various substrates. In this work, surface- and guest-molecule-promoted product selection from a dynamic covalent library as well as transimination were investigated at the liquid/solid interface by virtue of scanning tunneling microscopy (STM). The significant role played by the substrate in the selection and redistribution of the products is highlighted, which arises from the self-assembling and competitive adsorption of the products. Furthermore, our result demonstrated that the surface-assisted redistribution of the products can be further promoted by addition of a proper guest, which, by forming supramolecular assemblies, enhances the selection toward specific products.