Photochemical Preparation of Methyl-terminated Si(111) Surface Using a Grignard Reagent

Methyl-terminated Si(111) surface was successfully fabricated using a photochemical grafting technique. This methylated surface was formed by illuminating visible light onto a hydrogen-terminated Si(111) surface that was immersed in a Grignard–tetrahydrofuran solution. It had an oxide-inhibiting pro...

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Bibliographic Details
Published in:Chemistry letters 2012, Vol.41 (9), p.902-904
Main Authors: Herrera, Marvin U, Ichii, Takashi, Murase, Kuniaki, Sugimura, Hiroyuki
Format: Article
Language:English
Subjects:
Contact angle
Flat surfaces
Grafting
Illuminating
Illumination
Photochemical
Silicon
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Summary:Methyl-terminated Si(111) surface was successfully fabricated using a photochemical grafting technique. This methylated surface was formed by illuminating visible light onto a hydrogen-terminated Si(111) surface that was immersed in a Grignard–tetrahydrofuran solution. It had an oxide-inhibiting property and atomically flat surface. In addition, the water contact angle improved with grafting parameters such as illumination time and light intensity and went as high as (89.0 ± 0.80)°. This improvement was associated with the increase in the fraction of the silicon surface grafted with methyl groups.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2012.902