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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Self-recognition and self-selection in multicomponent supramolecular coordination networks on surfaces
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Self-recognition and self-selection in multicomponent supramolecular coordination networks on surfaces

机译：表面多组分超分子配位网络中的自识别和自选择

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摘要

Self-recognition, self-selection, and dynamic self-organization are of fundamental importance for the assembly of all supramolecular systems, but molecular-level information is not generally accessible. We present direct examples of these critical steps by using scanning tunneling microscopy to study mixtures of complementary organic ligands on a copper substrate. The ligands coordinate cooperatively with iron atoms to form well ordered arrays of rectangular multicomponent compartments whose size and shape can be deliberately tuned by selecting ligands of desired length from complementary ligand families. We demonstrate explicitly that highly ordered supramolecular arrays can be produced from redundant ligand mixtures by molecular self-recognition and -selection, enabled by efficient error correction and cooperativity, and show an example of failed self-selection due to error tolerance in the ligand mixture, leading to a disordered structure.
机译：自我识别，自我选择和动态自我组织对于所有超分子系统的组装都至关重要，但是通常无法获得分子水平的信息。我们通过使用扫描隧道显微镜研究铜基板上互补有机配体的混合物，提出了这些关键步骤的直接例子。配体与铁原子协同配位以形成矩形多组分区室的有序阵列，其大小和形状可通过从互补配体族中选择所需长度的配体来有意调整。我们明确证明，通过有效的纠错和协作能力，可以通过分子自识别和选择从多余的配体混合物中产生高度有序的超分子阵列，并显示了由于配体混合物中的误差容忍而导致自选失败的示例，导致结构混乱。

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