Study of alkyl organic monolayers with different molecular chain lengths directly attached to silicon

Takahiro Ishizaki, Nagahiro Saito, Lee SunHyung, Kaoru Ishida, Osamu Takai

研究成果: Article査読

33 被引用数 (Scopus)

抄録

Alkyl organic monolayers with different alkyl molecular chain lengths directly attached to silicon were prepared at 160°C from 1-decene (C10), 1-dodecene (C12), 1-tetradecene (C14), 1-hexadecene (C16), and 1-octadecene (C18). These monolayers were characterized on the basis of water contact angle measurement, ellipsometry, X-ray reflectivity (XR), X-ray photoelectron spectroscopy (XPS), and grazing incidence X-ray diffraction (GIXD) to elucidate the effect of the molecular chain length on the molecular arrangement and packing density of the monolayers. Water contact angle and XPS measurements showed that C12, C14, and C16 monolayers have a comparably higher quality, while the quality of C10 and C18 monolayers is worse. GIXD revealed that the alkyl monolayers directly attached to the Si were all amorphously structured regardless of their alkyl chain length. The amorphous structure of the alkyl monolayers could be attributed to the rigid Si-C bonding, low quality of hydrogen-terminated silicon substrate, and/or low mobility of physisorbed molecules.

本文言語English
ページ(範囲)9962-9966
ページ数5
ジャーナルLangmuir
22
24
DOI
出版ステータスPublished - 2006 11月 21
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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