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Periodic potentials in hybrid van der Waals heterostructures formed by supramolecular lattices on graphene.
Nature Communications ( IF 14.7 ) Pub Date : 2017-03-21 , DOI: 10.1038/ncomms14767 Marco Gobbi 1 , Sara Bonacchi 1 , Jian X Lian 2 , Yi Liu 3 , Xiao-Ye Wang 3 , Marc-Antoine Stoeckel 1 , Marco A Squillaci 1 , Gabriele D'Avino 2 , Akimitsu Narita 3 , Klaus Müllen 3 , Xinliang Feng 4 , Yoann Olivier 2 , David Beljonne 2 , Paolo Samorì 1 , Emanuele Orgiu 1
Nature Communications ( IF 14.7 ) Pub Date : 2017-03-21 , DOI: 10.1038/ncomms14767 Marco Gobbi 1 , Sara Bonacchi 1 , Jian X Lian 2 , Yi Liu 3 , Xiao-Ye Wang 3 , Marc-Antoine Stoeckel 1 , Marco A Squillaci 1 , Gabriele D'Avino 2 , Akimitsu Narita 3 , Klaus Müllen 3 , Xinliang Feng 4 , Yoann Olivier 2 , David Beljonne 2 , Paolo Samorì 1 , Emanuele Orgiu 1
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The rise of 2D materials made it possible to form heterostructures held together by weak interplanar van der Waals interactions. Within such van der Waals heterostructures, the occurrence of 2D periodic potentials significantly modifies the electronic structure of single sheets within the stack, therefore modulating the material properties. However, these periodic potentials are determined by the mechanical alignment of adjacent 2D materials, which is cumbersome and time-consuming. Here we show that programmable 1D periodic potentials extending over areas exceeding 104 nm2 and stable at ambient conditions arise when graphene is covered by a self-assembled supramolecular lattice. The amplitude and sign of the potential can be modified without altering its periodicity by employing photoreactive molecules or their reaction products. In this regard, the supramolecular lattice/graphene bilayer represents the hybrid analogue of fully inorganic van der Waals heterostructures, highlighting the rich prospects that molecular design offers to create ad hoc materials.
中文翻译：
石墨烯上超分子晶格形成的杂化范德华异质结构的周期势。
二维材料的兴起使得通过弱的面间范德华相互作用形成异质结构成为可能。在这种范德华异质结构中，二维周期性电势的出现显着改变了堆叠内单片的电子结构，从而调节了材料特性。然而，这些周期性电势是由相邻二维材料的机械排列决定的，这既麻烦又耗时。在这里，我们展示了当石墨烯被自组装超分子晶格覆盖时，会出现在超过 10 4 nm 2的区域延伸且在环境条件下稳定的可编程一维周期性电势。通过使用光反应分子或其反应产物，可以在不改变其周期性的情况下修改电势的幅度和符号。在这方面，超分子晶格/石墨烯双层代表了完全无机范德华异质结构的混合类似物，凸显了分子设计为创建特殊材料提供的丰富前景。
更新日期：2017-03-22
中文翻译：
石墨烯上超分子晶格形成的杂化范德华异质结构的周期势。
二维材料的兴起使得通过弱的面间范德华相互作用形成异质结构成为可能。在这种范德华异质结构中，二维周期性电势的出现显着改变了堆叠内单片的电子结构，从而调节了材料特性。然而，这些周期性电势是由相邻二维材料的机械排列决定的，这既麻烦又耗时。在这里，我们展示了当石墨烯被自组装超分子晶格覆盖时，会出现在超过 10 4 nm 2的区域延伸且在环境条件下稳定的可编程一维周期性电势。通过使用光反应分子或其反应产物，可以在不改变其周期性的情况下修改电势的幅度和符号。在这方面，超分子晶格/石墨烯双层代表了完全无机范德华异质结构的混合类似物，凸显了分子设计为创建特殊材料提供的丰富前景。
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