Phase-separated alkanethiol self-assembled monolayers investigated by non-contact AFM
Phase-separated alkanethiol self-assembled monolayers investigated by non-contact AFM
复制标题
通过非接触式 AFM 研究相分离的烷硫醇自组装单分子层
DOI：
10.1016/s0169-4332(02)01487-3
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发表时间：
2003
影响因子：
6.7
通讯作者：
K. Matsushige
中科院分区：
文献类型：
--
作者：
T. Ichii;T. Fukuma;Kazuya Kobayashi;H. Yamada;K. Matsushige
采用非接触式原子力显微镜（NC-AFM）研究了在Au（111）表面上相分离的烷硫醇分子自组装单层（SAMs）作为具有纳米级畴分布的模型样品。我们制备了由1-癸硫醇(CH3 - (CH2) 9-SH；C10)和1,10-癸二硫醇(HS - (CH2) 10-SH；C10D)。我们获得了地形、表面电位（SP）和能量耗散图像。获得的形貌图像表明，样品表面由紧密排列的c10单层畴和C10D畴组成。c10结构域的SP值比C10D结构域高100 ~ 150mv。C10D域的能量耗散大于c10域。我们讨论了SP和c10和C10D畴上的耗散能差异的来源。
We investigated phase-separated self-assembled monolayers (SAMs) of alkanethiol molecules on Au(111) surfaces as model samples which have nanometer-scale domain distribution by non-contact atomic force microscopy (NC-AFM). We made SAMs composed of 1-decanethiol (CH3–(CH2)9–SH; C10) and 1,10-decanedithiol (HS–(CH2)10–SH; C10D). We obtained topographic, surface potential (SP) and energy dissipation images. The obtained topographic images suggested the sample surface was composed of closely packed C10monolayer domains and C10D domains. The SP of C10domains were about 100–150mV higher than that of C10D domains. The energy dissipation on C10D domains were larger than that on C10domains. We discussed the origins of difference in SP and the dissipated energy on the C10and C10D domains.