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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Self-assembly and aggregation of melamine and melamine-uric/cyanuric acid investigated by STM and AFM on solid surfaces
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Self-assembly and aggregation of melamine and melamine-uric/cyanuric acid investigated by STM and AFM on solid surfaces

机译：STM和AFM在固体表面上研究三聚氰胺和三聚氰胺-尿酸/氰尿酸的自组装和聚集

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摘要

The self-assembly and aggregation of melamine (M), and a mixture of melamine with uric/cyanuric acid (UA/CA) are investigated by performing scanning tunneling microscopy (STM) and atomic force microscopy (AFM) on graphite and mica surfaces at room temperature. Two-dimensional (2D) porous molecular networks and disordered adlayers are found, respectively, in the M and UA-M assembly on graphite. Uniformly dispersed nanoparticles of M and UA-M are found at various concentrations by AFM. Owing to complementary NH···O and NH···N hydrogen bonds, the CA-M mixture forms 2D densely packed adlayers and nanoscale crystals on graphite and aggregates into three-dimensional (3D) clusters on the surfaces. The size of the cluster is dependent on the molecular concentration. The results provide important information for the self-assembly of triazine compounds and are significant in the study of kidney disease related to melamine.
机译：三聚氰胺（M）以及三聚氰胺与尿酸/氰尿酸的混合物（UA / CA）的自组装和聚集通过在石墨和云母表面进行扫描隧道显微镜（STM）和原子力显微镜（AFM）进行研究室内温度。在石墨上的M和UA-M组件中分别发现了二维（2D）多孔分子网络和无序的附加层。通过原子力显微镜发现各种浓度的M和UA-M均匀分散的纳米颗粒。由于互补的NH··O和NH··N氢键，CA-M混合物在石墨上形成2D密集堆积的吸附层和纳米级晶体，并在表面聚集成三维（3D）簇。簇的大小取决于分子浓度。该结果为三嗪化合物的自组装提供了重要信息，对三聚氰胺相关的肾脏疾病的研究具有重要意义。

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