Oligomers and Cyclooligomers of Rigid Phenylene-Ethynylene-Butadiynylenes: Synthesis and Self-Assembled Monolayers
Oligomers and Cyclooligomers of Rigid Phenylene-Ethynylene-Butadiynylenes: Synthesis and Self-Assembled Monolayers
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DOI：
10.1002/anie.201001625
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发表时间：
2010-01-01
影响因子：
16.6
通讯作者：
Hoeger, Sigurd
中科院分区：
文献类型：
--
作者：
Jester, Stefan-S.;Shabelina, Natalia;Hoeger, Sigurd
纳米级形状的持久大环由于其有趣的结构、光学和电子性质而引起了越来越多的关注。此外，它们还能够在一维、二维和三维空间构建高度有序的超分子纳米结构。[1]近年来，形状恒定的大环在固体衬底上的自组装单分子膜(SAM)受到了特别的重视。[2]环的大小和距离可以通过构建块来调整，其内部和外部可以综合独立地进行处理。总而言之，这使得表面功能化具有原子级的精度。在某些情况下，这种模式可以用于吸附分子的外延沉积。[3]分子-基质和分子-分子相互作用是分子-基质和分子-分子相互作用的驱动力，它们由范德华力主导。尽管刚性大环和刚性线型低聚物[4]已成为最近扫描隧道显微镜(STM)研究的焦点，但对由自由连接或自由旋转的连接体[5]连接的刚性棒[5]及其在固体基质上的相应的闭环结构的系统研究即使有报道也很少。
Nanoscale shape-persistent macrocycles have attracted increasing attention because of their interesting structural, optical, and electronic properties. Moreover, they are able to build up highly organized supramolecular nanostructures in one, two, and three dimensions.[1] Recently, special emphasis has been given to self-assembled monolayers (SAMs) of shape-persistent macrocycles on solid substrates.[2] The ring sizes and distances can be adjusted by the building blocks, and their interior and exterior can synthetically be addressed independently. Together, this allows a surface functionalization with atomic-level precision. In several cases, such patterns could be used for the epitaxial deposition of admolecules.[3]The driving forces for the self-assembly are the molecule–substrate and molecule–molecule interactions, which are dominated by van der Waals forces. Although rigid macrocycles and rigid linear oligomers [4] have come into the focus of recent scanning tunneling microscopy (STM) studies, a systematic investigation of rigid rods connected by freely jointed or freely rotating linkers [5] and their corresponding closed-loop structures on a solid substrate have been rarely reported, if at all.