Measurements of the thickness compressibility of an N- octadecyltriethoxysilane monolayer self-assembled on mica

Sungsoo Kim, Kilwon Cho, Joan E Curry

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The surface forces apparatus technique and the Johnson-Kendall-Roberts theory were used to study the elastic properties of an n- octadecyltriethoxysilane self-assembled monolayer (OTE-SAM) on both untreated and plasma-treated mica. Our aim was to measure the thickness compressibilities of OTE monolayers on untreated and plasma-treated mica and to estimate their surface densities and phase-states from the film compressibility. The compressibility moduli of OTE are (0.96 ± 0.02) × 10 8 N/m 2 on untreated mica and (1.24 ± 0.06) × 108 N/m 2 on plasma-treated mica. This work suggests that the OTE phase-state is pseudocrystalline. In addition, the results from the compressibility measurements in water vapor suggest that the OTE-SAM on both untreated and plasma-treated mica is not homogeneous but rather contains both crystalline polymerized OTE domains and somewhat hydrophilic gaseous regions.

Original languageEnglish (US)
Pages (from-to)8290-8296
Number of pages7
JournalLangmuir
Volume21
Issue number18
DOIs
StatePublished - Aug 30 2005

Fingerprint

Mica
Self assembled monolayers
mica
Compressibility
compressibility
Plasmas
Steam
Density (specific gravity)
Water vapor
water vapor
Monolayers
elastic properties
Crystalline materials
estimates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Measurements of the thickness compressibility of an N- octadecyltriethoxysilane monolayer self-assembled on mica. / Kim, Sungsoo; Cho, Kilwon; Curry, Joan E.

In: Langmuir, Vol. 21, No. 18, 30.08.2005, p. 8290-8296.

Research output: Contribution to journalArticle

@article{936f72bbed4547aab332771c8f5f6d77,
title = "Measurements of the thickness compressibility of an N- octadecyltriethoxysilane monolayer self-assembled on mica",
abstract = "The surface forces apparatus technique and the Johnson-Kendall-Roberts theory were used to study the elastic properties of an n- octadecyltriethoxysilane self-assembled monolayer (OTE-SAM) on both untreated and plasma-treated mica. Our aim was to measure the thickness compressibilities of OTE monolayers on untreated and plasma-treated mica and to estimate their surface densities and phase-states from the film compressibility. The compressibility moduli of OTE are (0.96 ± 0.02) × 10 8 N/m 2 on untreated mica and (1.24 ± 0.06) × 108 N/m 2 on plasma-treated mica. This work suggests that the OTE phase-state is pseudocrystalline. In addition, the results from the compressibility measurements in water vapor suggest that the OTE-SAM on both untreated and plasma-treated mica is not homogeneous but rather contains both crystalline polymerized OTE domains and somewhat hydrophilic gaseous regions.",
author = "Sungsoo Kim and Kilwon Cho and Curry, {Joan E}",
year = "2005",
month = "8",
day = "30",
doi = "10.1021/la050689r",
language = "English (US)",
volume = "21",
pages = "8290--8296",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "18",

}

TY - JOUR

T1 - Measurements of the thickness compressibility of an N- octadecyltriethoxysilane monolayer self-assembled on mica

AU - Kim, Sungsoo

AU - Cho, Kilwon

AU - Curry, Joan E

PY - 2005/8/30

Y1 - 2005/8/30

N2 - The surface forces apparatus technique and the Johnson-Kendall-Roberts theory were used to study the elastic properties of an n- octadecyltriethoxysilane self-assembled monolayer (OTE-SAM) on both untreated and plasma-treated mica. Our aim was to measure the thickness compressibilities of OTE monolayers on untreated and plasma-treated mica and to estimate their surface densities and phase-states from the film compressibility. The compressibility moduli of OTE are (0.96 ± 0.02) × 10 8 N/m 2 on untreated mica and (1.24 ± 0.06) × 108 N/m 2 on plasma-treated mica. This work suggests that the OTE phase-state is pseudocrystalline. In addition, the results from the compressibility measurements in water vapor suggest that the OTE-SAM on both untreated and plasma-treated mica is not homogeneous but rather contains both crystalline polymerized OTE domains and somewhat hydrophilic gaseous regions.

AB - The surface forces apparatus technique and the Johnson-Kendall-Roberts theory were used to study the elastic properties of an n- octadecyltriethoxysilane self-assembled monolayer (OTE-SAM) on both untreated and plasma-treated mica. Our aim was to measure the thickness compressibilities of OTE monolayers on untreated and plasma-treated mica and to estimate their surface densities and phase-states from the film compressibility. The compressibility moduli of OTE are (0.96 ± 0.02) × 10 8 N/m 2 on untreated mica and (1.24 ± 0.06) × 108 N/m 2 on plasma-treated mica. This work suggests that the OTE phase-state is pseudocrystalline. In addition, the results from the compressibility measurements in water vapor suggest that the OTE-SAM on both untreated and plasma-treated mica is not homogeneous but rather contains both crystalline polymerized OTE domains and somewhat hydrophilic gaseous regions.

UR - http://www.scopus.com/inward/record.url?scp=24944492876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24944492876&partnerID=8YFLogxK

U2 - 10.1021/la050689r

DO - 10.1021/la050689r

M3 - Article

VL - 21

SP - 8290

EP - 8296

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 18

ER -