Molecular aggregation state of n-octadecyltrichlorosilane monolayer prepared at an air/water interface

Ken Kojio, Shouren Ge, Atsushi Takahara, Tisato Kajiyama

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Abstract

Molecular arrangement of polymerized n-octadecyltrichlorosilane (OTS, CH3(CH2)17SiCl3) monolayer transferred onto hydrophilic substrate by an upward drawing method was investigated with a transmission electron microscope (TEM) and an atomic force microscope (AFM). The electron diffraction (ED) pattern of the OTS monolayer revealed that the OTS molecules were regularly arranged in a hexagonal array with a (10) spacing of ca. 0.42 nm. The high-resolution AFM image of the OTS monolayer in a scan area of 10 × 10 nm2 exhibited the individual methyl group of which packing was a hexagonal array in a similar molecular arrangement concluded on the basis of the ED study. Also, the point defect in the crystalline OTS monolayer was successfully observed for the first time.

Original languageEnglish
JournalLangmuir
Volume14
Issue number5
Publication statusPublished - Mar 3 1998

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All Science Journal Classification (ASJC) codes

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

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