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hejin04c

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Nature Materials
Published online: 10 January 2010 | doi:10.1038/nmat2611


Nanopatterning Si(111) surfaces as a selective surface-chemistry route
David J. Michalak1,4, Sandrine Rivillon Amy1,4, Damien Aureau2, Min Dai1, Alain Estève3 & Yves J. Chabal2



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AbstractUsing wet-chemical self-assembly, we demonstrate that standard surface reactions can be markedly altered. Although HF etching of Si surfaces is known to produce H-terminated surfaces, we show that up to ~30% of a monolayer of stable Si–F bonds can be formed on atomically smooth Si(111) surfaces on HF reaction, when chemically isolated Si atoms are the target of the reaction. Similarly, ~30% Si–OH termination can be achieved by immersion of the partially covered F–Si(111) surface in water without oxidation of the underlying Si substrate. Such reactions are possible when H-terminated (111)-oriented Si surfaces are initially uniformly patterned with methoxy groups. These findings are contrary to the knowledge built over the past twenty years and highlight the importance of steric interactions at surfaces and the possibility to stabilize products at surfaces that cannot be obtained on chemically homogeneous surfaces.
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jakewshuj

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小木虫(金币+0.5):给个红包,谢谢回帖交流
版主是不是最好把全文也弄上,方便大家下载,呵。
It is not what you want in this world, but what you get; and you do get what you want if you know what you want and want the right things.
2楼2010-01-13 13:15:21
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wzhhust

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最好把全文链接给出呀
3楼2010-01-13 15:34:14
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hejin04c

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呵呵,这个没有下到全文,但是感觉 是很有启发的一篇文献。界面反应还是比较难做的
欲得其中,必求其上;欲得其上,必求上上
4楼2010-01-13 18:41:03
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