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首页> 外文期刊>RSC Advances >Ethanol vs. water: influence of the terminal functional group of the alkyl chain and environment of the self-assembly process on electron transport through the thiol layer
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Ethanol vs. water: influence of the terminal functional group of the alkyl chain and environment of the self-assembly process on electron transport through the thiol layer

机译：乙醇与水：通过硫醇层对电子传输的烷基链和环境的烷基链和环境的影响

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Self-assembly of alkanethiol chains on metallic surfaces is a spontaneous process which leads to the formation of highly ordered layers. However, the organization of the thiol chains on the surface strongly depends on the intermolecular interactions between the terminal groups in the chain. The solution environment also plays an important role. In this paper we present the effect of solution solvent (water and ethanol) and the presence of various hydrophilic terminal groups (–OH, –NH _(2) and –COOH) on the quality and electrochemical properties of the formed alkanethiol layers. In the studies we applied voltammetry, atomic force microscopy and quartz crystal microbalance to characterize the morphology, packing density and ability to electron exchange through the thiol layer. The blocking properties of the formed SAMs expressed as the electron-transfer rate constant as well as their organization have been examined using a model electrochemical probe, Fe(CN) _(6) ~(3?) . With the increase in the polarity of the terminal functional group the regularity of the thiol layer decreased.
机译：金属表面上的烷硫醇链的自组装是一种自发过程，其导致形成高度有序的层。然而，表面上的硫醇链的组织强烈取决于链中末端基团之间的分子间相互作用。解决方案环境也起着重要作用。本文介绍了溶液溶剂（水和乙醇）的效果，以及各种亲水末端基团（-OH，-NH _（2）和-COOH）的存在对所形成的链烷醇层的质量和电化学性质。在研究中，我们应用伏安法，原子力显微镜和石英晶体微稳定，以表征通过硫醇层的形态，包装密度和电子交换的能力。使用模型电化学探针，Fe（CN）_（6）〜（3？）检查形成为电子传递速率常数以及其组织的形成的SAM的阻断性能。随着末端官能团的极性的增加，硫醇层的规律降低。

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