From a Two-Dimensional Supramolecular Network to One-Dimensional Covalent Polymer at the Liquid/Solid Interface: Insight into the Role of the Stoichiometric Ratio of the Precursors

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• 作者：Yanxia Yu ; Yali Zheng ; Shengbin Lei
• 刊名：Journal of Physical Chemistry C
• 出版年：2017
• 出版时间：January 12, 2017
• 年：2017
• 卷：121
• 期：1
• 页码：593-599
• 全文大小：585K
• ISSN：1932-7455

文摘

Co-condensation reaction between 2,6-diaminoanthraquinone and aromatic aldehyde at the octanoic acid/highly oriented pyrolitic graphite (HOPG) interface has been studied with scanning tunneling microscopy (STM). We found that the stoichiometric ratio of the precursors plays a vital role in the formation of the assembling structures. By controlling the molar ratio of the amine and aldehyde monomers, either an ordered, hydrogen-bond-stabilized two-dimensional supramolecular network or assembly of one-dimensional covalent polymers can be successfully constructed. The supramolecular network can also be transformed to covalent polymers by annealing the sample to 373 K.