The Adsorption of Unsymmetrical Spiroalkanedithiols onto Gold Affords Multi-Component Interfaces that Are Homogeneously Mixed at the Molecular Level
The Adsorption of Unsymmetrical Spiroalkanedithiols onto Gold Affords Multi-Component Interfaces that Are Homogeneously Mixed at the Molecular Level
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不对称螺烷二硫醇在金上的吸附提供了在分子水平上均匀混合的多组分界面
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
T. Lee
中科院分区：
文献类型：
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作者：
Y. Shon;Seunghwan Lee;S. Perry;T. Lee
将不对称的螺烷二硫醇2-辛基-2-十五烷基丙烷-1，3-二硫醇暴露于金表面得到多组分自组装单层（SAM），其中不同的尾基在分子水平上混合良好。新的“混合”SAM的特征在于椭圆偏振，接触角，偏振调制红外反射吸收光谱（PM-IRRAS），和原子力显微镜（AFM）。新的SAM具有类似的链长和表面组合物的正常的烷硫醇的混合物的共吸附所产生的那些比较表明，在后者SAM中发现的尾部基团的局部域形成（或“孤岛”）是不存在的SAM来自不对称的spiroalkanedithiol。
Exposure of the unsymmetrical spiroalkanedithiol, 2-octyl-2-pentadecylpropane-1,3-dithiol, to the surface of gold afforded a multicomponent self-assembled monolayer (SAM) in which the differing tail groups were well mixed at the molecular level. The new “mixed” SAM was characterized by ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and atomic force microscopy (AFM). Comparison of the new SAM to those generated by the coadsorption of mixtures of normal alkanethiols having analogous chain lengths and surface compositions showed that local domain formation (or “islanding”) of the tail groups found in the latter SAMs was absent in the SAM derived from the unsymmetrical spiroalkanedithiol.