In situ STM study of potential-dependent height change of a tetrathiafulvalene derivative embedded in alkanethiol self-assembled monolayers on Au(111).
In situ STM study of potential-dependent height change of a tetrathiafulvalene derivative embedded in alkanethiol self-assembled monolayers on Au(111).
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DOI：
10.1021/jp0558472
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发表时间：
2005-11
期刊：
影响因子：
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通讯作者：
Y. Yokota;A. Miyazaki;K. Fukui;T. Enoki;M. Hara
中科院分区：
文献类型：
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作者：
Y. Yokota;A. Miyazaki;K. Fukui;T. Enoki;M. Hara
利用原位扫描隧道显微镜在电位控制下研究了嵌入正烷硫醇SAM基质中的电活性四硫代烯硫醇岛。与以往研究的随机开关不同，本系统可以通过选择合适的电势和岛的大小来有意地控制岛的表观高度。高度变化对电势和尺寸的依赖解释为电活性部分的充电效应引起的岛的结构变化。
Electroactive tetrathiafulvalene thiol islands embedded in an n-alkanethiol SAM matrix were studied under potential control using in situ scanning tunneling microscopy. Unlike previously studied stochastic switching, the apparent height of the island could be intentionally controlled in the present system by choosing the appropriate potential and the island size. The dependence of the height change on the potential and the size is explained as structural change of the island induced by the charging effect of the electroactive moiety.