解析石墨上氢键连接的玫瑰花结超分子聚集体的纳米结构：一项原子力显微镜研究。
Unraveling the nanostructure of supramolecular assemblies of hydrogen-bonded rosettes on graphite: an atomic force microscopy study.
作者信息
Schönherr Holger, Paraschiv Vasile, Zapotoczny Szczepan, Crego-Calama Mercedes, Timmerman Peter, Frank Curtis W, Vancso G Julius, Reinhoudt David N
机构信息
Department of Materials Science and Technology of Polymers, MESA+ Research Institute and Faculty of Chemical Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
出版信息
Proc Natl Acad Sci U S A. 2002 Apr 16;99(8):5024-7. doi: 10.1073/pnas.072685399. Epub 2002 Apr 2.
The self-organization of multicomponent tetrarosette assemblies into ordered nanostructures on graphite surfaces has been studied by atomic force microscopy (AFM). Real-space information on the level of individual molecules allowed us to analyze the underlying structure in unprecedented detail. In highly ordered nanorod domains, tetrarosettes 1(3) x (DEB)(12) arrange in the form of parallel rows with a spacing of 4.6 +/- 0.1 nm. High resolution AFM revealed the internal packing of the tetrarosette assemblies in these rows, which can be described by an oblique lattice with a = 2.5 +/- 0.3 nm, b = 5.0 +/- 0.1 nm, and gamma = 122 +/- 3 degrees. The results, together with recent improvements in synthetic approaches, contribute to the development of a general strategy to develop H-bonding-based nanostructures with molecular precision.
通过原子力显微镜（AFM）研究了多组分四玫瑰形组装体在石墨表面自组装成有序纳米结构的过程。关于单个分子水平的实空间信息使我们能够以前所未有的细节分析其潜在结构。在高度有序的纳米棒区域中，四玫瑰形分子1(3) x (DEB)(12) 以平行排列的形式排列，间距为4.6 +/- 0.1 nm。高分辨率AFM揭示了这些排列中四玫瑰形组装体的内部堆积情况，其可以用一个斜晶格来描述，晶格参数为a = 2.5 +/- 0.3 nm，b = 5.0 +/- 0.1 nm，γ = 122 +/- 3度。这些结果，连同合成方法的最新改进，有助于制定一种通用策略，以分子精度开发基于氢键的纳米结构。
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