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首页> 外文期刊>Applied Surface Science >Tetragonal porous networks made by rod-like molecules on Au(111) with halogen bonds
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Tetragonal porous networks made by rod-like molecules on Au(111) with halogen bonds

机译：由具有卤素键的Au（111）上的棒状分子制成的四方多孔网络

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摘要

Supramolecular structures of two rod-like molecules whose both ends are terminated with Br-ligands were studied using scanning tunneling microscopy (STM). Rectangular and square porous networks were observed in 4,4"-dibromo-p-terphenyl (DBTP) and 4,4"-dibromo-p-quaterphenyl (DBQP) molecules on Au(111) with the void areas of 3.5 and 5.6 nm~2, respectively. Both networks had chiral quadrupole nodes that could be explained with four Br···Br halogen bonds and four Br···H hydrogen bonds. The reversible transformations of network structures were observed in consecutive STM images, possibly mediated by a liquid phase surrounding the networks. The molecules also formed close-packing ladder-like networks with triple nodes that could be explained with four Br···H bonds. Our study shows that Br-ligands play key roles in forming molecular networks for both rod-like molecules.
机译：使用扫描隧道显微镜（STM）研究了两个末端均被Br-配体终止的棒状分子的超分子结构。在Au（111）上的4,4“-二溴-对-三联苯（DBTP）和4,4”-二溴-对-四联苯（DBQP）分子中观察到矩形和方形多孔网络，空隙面积分别为3.5和5.6 nm 〜2。这两个网络都具有手性四极节点，可以用四个Br··Br卤素键和四个Br··H氢键来解释。在连续的STM图像中观察到网络结构的可逆转换，可能是由围绕网络的液相介导的。分子还形成了具有三个节点的紧密堆积的梯状网络，这可以用四个Br··H键来解释。我们的研究表明，Br-配体在形成两个棒状分子的分子网络中起关键作用。

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  • 来源
    《Applied Surface Science》 |2014年第1期|74-78|共5页
  • 作者

    Won Jun Jang; Kyung-Hoon Chung; Min Wook Lee; Howon Kim; Sungjun Lee; Se-Jong Kahng;

  • 作者单位

    Department of Physics, Korea University, 145 Anam-ro, Seongbuk-gu, 136-713 Seoul, Republic of Korea;

    Department of Physics, Korea University, 145 Anam-ro, Seongbuk-gu, 136-713 Seoul, Republic of Korea;

    Department of Physics, Korea University, 145 Anam-ro, Seongbuk-gu, 136-713 Seoul, Republic of Korea;

    Department of Physics, Korea University, 145 Anam-ro, Seongbuk-gu, 136-713 Seoul, Republic of Korea;

    Division of Physical Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 305-340, Republic of Korea;

    Department of Physics, Korea University, 145 Anam-ro, Seongbuk-gu, 136-713 Seoul, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Scanning tunneling microscopy; Halogen bond; Intermolecular structure;

    机译：扫描隧道显微镜卤素键分子间结构;

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