Packing Biomolecules into Sierpinski Triangles with Global Organizational Chirality
Packing Biomolecules into Sierpinski Triangles with Global Organizational Chirality
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将生物分子包装成具有全局组织手性的谢尔宾斯基三角形
DOI：
10.1021/jacs.1c05949
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发表时间：
2021-08-13
影响因子：
15
通讯作者：
Wang, Yongfeng
中科院分区：
文献类型：
--
作者：
Li, Chao;Li, Ruoning;Wang, Yongfeng
分形存在于自然界中，在生物功能中发挥着重要作用。然而，可控地制备生物分子分形是具有挑战性的。本研究通过L-色氨酸和1，3-二（4-吡啶基）苯分子在Ag（111）表面的共组装，成功构建了一系列具有整体组织手性的Sierpinski三角形。当用D-色氨酸替换L-色氨酸时，手性被切换。用低温扫描隧道显微镜在单分子水平上对分形结构进行了表征。密度泛函理论计算表明，分子间氢键稳定的Sierpinski三角形。
Fractals are found in nature and play important roles in biological functions. However, it is challenging to controllably prepare biomolecule fractals. In this study, a series of Sierpinski triangles with global organizational chirality is successfully constructed by the coassembly of L-tryptophan and 1,3-bi(4-pyridyl)benzene molecules on Ag(111). The chirality is switched when replacing L-tryptophan by D-tryptophan. The fractal structures are characterized by low-temperature scanning tunneling microscopy at the single-molecule level. Density functional theory calculations reveal that intermolecular hydrogen bonds stabilize the Sierpinski triangles.