Asymmetric Response toward Molecular Fluorination in Binary Copper-Phthalocyanine/Pentacene Assemblies
Asymmetric Response toward Molecular Fluorination in Binary Copper-Phthalocyanine/Pentacene Assemblies
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DOI：
10.1021/jp506151j
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发表时间：
2014-08-14
影响因子：
3.7
通讯作者：
Ortega, J. E.
中科院分区：
文献类型：
--
作者：
de Oteyza, D. G.;Garcia-Lastra, J. M.;Ortega, J. E.
我们报告了分子间和分子底物相互作用的微妙平衡及其对分子自组装的影响的一个说教性和简单的例子。这项研究是对两种密切相关的铜酞菁和并五苯的分子混合物进行的，其中两种分子中有一种是氟化的。逆转氟化会改变分子间氢键以及与底物的相互作用。结果，在Au（100）衬底上，一种混合物组装成晶体结构，而另一种混合物表现出较弱的分子间相互作用和较大的分子衬底相互作用电位波纹，导致无序层。然而，当使用波纹相互作用电位较小的衬底时，两种共混物结构之间的差异就消失了。
We report a didactic and simple example of the subtleness in the balance of intermolecular and molecule substrate interactions and its effect on molecular self-assembly. The study is performed on two closely related molecular blends of copper phthalocyanines and pentacene, in each of which one of the two molecules is fluorinated. Reversing the fluorination brings about changes in the intermolecular hydrogen bonds, as well as in the interactions with the substrate. As a result, on Au(100) substrates one blend assembles into a crystalline structure, whereas the other, displaying weaker intermolecular interactions and a larger corrugation in the molecule substrate interaction potential, results in a disordered layer. However, the difference between he two blend's structures vanishes when substrates with less corrugated interaction potentials are used.