SPONTANEOUSLY ORGANIZED MOLECULAR ASSEMBLIES .3. PREPARATION AND PROPERTIES OF SOLUTION ADSORBED MONOLAYERS OF ORGANIC DISULFIDES ON GOLD SURFACES
SPONTANEOUSLY ORGANIZED MOLECULAR ASSEMBLIES .3. PREPARATION AND PROPERTIES OF SOLUTION ADSORBED MONOLAYERS OF ORGANIC DISULFIDES ON GOLD SURFACES
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DOI：
10.1021/ja00242a020
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发表时间：
1987-04-15
影响因子：
15
通讯作者：
ALLARA, DL
中科院分区：
文献类型：
--
作者：
NUZZO, RG;FUSCO, FA;ALLARA, DL
本文表明，稳定的，定向的，多功能的有机单分子膜，可以制备的结构复杂的有机二硫化物多晶金基板上的自发组织。化学吸附进行到非常高的覆盖率，接近相当于体相密度的吸附物分子。与表面的键合也是高度特异性的，因为二硫化物部分的化学吸附比广泛的其他官能团更有利。这后一个功能允许准备各种各样的有机表面具有良好definedmicroscopic和macroscopic特性。本文介绍了几种典型的单层膜，探讨了它们的化学性质和热性质，并用红外光谱和光电子能谱等技术表征了它们的结构。近年来，人们对有机薄膜材料的性质，特别是用Langmuir-Blodgett和自组装技术制备的有机单层膜和多层膜的性质的兴趣大大增加。这种重生的技术动力--这种结构和材料与粘附、1润滑、2微电子、3光化学4和电化学5过程以及生物界面6的相关性--已经被广泛讨论，现在得到了很好的理解。同样重要的是，迄今为止，很少讨论的是，这些研究可能会对我们理解表面和界面的化学和物理学做出更基本的贡献。例如，即使是名义上简单的宏观性质（如润湿性）与精确的微观结构（甚至是相反的方向）相联系，目前也是非常困难的。7更复杂的界面性质和过程的特征在于：
This paper shows that stable, oriented, polyfunctional organic monolayers can be prepared by the spontaneous organization of structurally complex organic disulfides on polycrystalline goldsubstrates. Chemisorption proceeds to very high coverages, approaching that equivalent to the bulk-phase densities of the adsorbate molecules. The bonding to the surface is also highly specific, inasmuch as the chemisorption of the disulfide moiety is favored greatly over a wide range of other functionality. This latter feature allows the ready preparation of a broad variety of organic surfaces with well-definedmicroscopic and macroscopic characteristics. Several representative examples of monolayer films, are described, their chemicaland thermal properties explored, and their structures characterized by several techniques including infrared and photoelectron spectroscopies.Interest in the properties of thin film organic materials, espe-cially as regards organized mono- and multilayer structures prepared by Langmuir-Blodgett and self-assembly techniques, has grown enormously in recent years. The technological impetus for this rebirth—the relevance of such structures and materials to adhesion, 1 lubrication, 2 microelectronics, 3 photochemical4 and electrochemical5 processes, as well as biological interfaces6—has been discussed extensively and is now well appreciated. Equally important and, as yet, little discussed is the more basic contribution such studies might make to our understanding of the chemistry and physics of surfaces and interfacesin general. For example, to relate even a nominally simple macroscopic property such as wetting to a precise microscopic structure (or even to go in the opposite direction) is enormously difficult at present. 7 More involved interfacial properties and processes are characterized by