Adlayer Structure of Shape-Persistent Macrocycle Molecules: Fabrication and Tuning Investigated with Scanning Tunneling Microscopy
Adlayer Structure of Shape-Persistent Macrocycle Molecules: Fabrication and Tuning Investigated with Scanning Tunneling Microscopy
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形状持久大环分子的粘附层结构：用扫描隧道显微镜研究制造和调谐
DOI：
10.1021/jp4115964
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发表时间：
2014-03
期刊：
影响因子：
--
通讯作者：
Zhan-Jun Gu
中科院分区：
文献类型：
--
作者：
Yuan-Ping Yi;Li-Ping Xu;Zhi-Xiang Wang;Zhan-Jun Gu
用扫描隧道显微镜(STM)研究了二乙炔咔唑单元构筑的正方形和三角形大环分子在石墨表面的组装结构。STM观察表明，方形大环分子(M1)在石墨表面形成了多层膜。在第一层中，M1组装成中等尺寸的磁畴，有少量的缺陷和位错，而第二层中，M1的大部分分别分散在第一层上。本文根据STM实验提供的信息，提出了双层结构的一种初步堆积模式。考虑到相似分子的晶体数据给出的层间距和M1烷基链的长度，我们认为可能是顶部M1侧链的一部分吸附在底部M1的空穴区域，并可能在稳定第二层方面起主导作用。这一假设得到了一个对照实验的验证，在该实验中，冠烯被填充在M1的空腔中，没有发现M1的双层结构。三角形分子(M2)组织成单层，具有更大和更少的缺陷结构域。两个M2平行配对，但方向相反，负责分子排的锯齿状边缘。M2的烷基链采用了相当多样化的排列，而不干扰M2核心部分的组装。当溶液中同时含有冠烯和M2时，没有观察到M2冠烯络合物，M2的附着层特征与仅含M2的溶液基本相同。研究结果有助于我们了解不同形状大环分子的堆积行为，理解表面自组装原理，开发基于相关材料的高性能器件。
The assembling structure of square and triangular macrocycle molecules constructed with diethynylcarbazole units was investigated by scanning tunneling microscopy (STM) on a graphite surface. STM observation revealed that the square macrocycle molecule (M1) forms a multilayer on the graphite surface. In the first layer, M1 assembles into medium-sized domains with a few defects and dislocations, whereas, for the second layer, most of M1 are dispersed on the first layer separately. A tentative stacking mode of the bilayer structure is provided in this paper on the basis of information given by STM experiments. Considering the interlayer distance given by the crystal data on the similar molecules and the length of the M1 alkyl chains, we think that it is possible that part of the top M1 side chains adsorbs on the cavity area of the bottom M1 and probably plays a dominant role in stabilizing the second layer. This postulation is verified by a control experiment in which coronene is filled in the cavity of M1 and no bilayer structure of M1 is found. The triangular molecule (M2) organizes into a single layer with larger and less defect domains. Two M2 are paired together in parallel, but opposite-oriented style, and are responsible for the serrate edge of the molecular row. The alkyl chains of M2 adopt rather diverse arrangements without disturbing the assembly of M2 core parts. When the solution contains both coronene and M2, no M2 coronene complex is observed and the adlayer characteristics of M2 are essentially the same as those of only M2 in solution. The results may help us to learn the stacking behavior of macrocycle molecules with different shapes, understand surface self-assembling principles, and develop high-performance devices based on related materials.
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DOI：
10.1021/jo0611869
发表时间：
2006-08
期刊：
The Journal of organic chemistry
影响因子：
--
作者：
Tianyu Zhao;Zhanxiang Liu;Yabin Song;W. Xu;Deqing Zhang;Daoben Zhu
通讯作者：
Tianyu Zhao;Zhanxiang Liu;Yabin Song;W. Xu;Deqing Zhang;Daoben Zhu
影响因子：
29.4
作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
通讯作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
影响因子：
8.6
作者：
A. Ziegler;W. Mamdouh;An Ver Heyen;M. Surin;H. Uji‐i;Mohammed M. S. Abdel-Mottaleb;F. D. De Schryver-F.-D.-De-Sc
通讯作者：
A. Ziegler;W. Mamdouh;An Ver Heyen;M. Surin;H. Uji‐i;Mohammed M. S. Abdel-Mottaleb;F. D. De Schryver-F.-D.-De-Sc
影响因子：
--
作者：
Henning Wettach;S. Höger;Debangshu Chaudhuri;J. Lupton;Feng Liu;Elizabeth M. Lupton;S. Tretiak;
通讯作者：
Henning Wettach;S. Höger;Debangshu Chaudhuri;J. Lupton;Feng Liu;Elizabeth M. Lupton;S. Tretiak;
影响因子：
16.6
作者：
Jester, Stefan-S.;Shabelina, Natalia;Hoeger, Sigurd
通讯作者：
Hoeger, Sigurd