Load-Induced Frictional Transition at a Well-Defined Alkane Loop Surface

Atsuomi Shundo, Koichiro Hori, Yasuyuki Tezuka, Takuya Yamamoto, Keiji Tanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Self-assembled monolayers (SAMs) have attracted considerable attention as a tool to confer desirable properties on material surfaces. So far, molecules used for the SAM formation are generally limited to linear ones and thus chain ends dominate the surface properties. In this study, we have successfully demonstrated unique frictional properties of a SAM composed of alkane loops from cyclic alkanedisulfide on a gold substrate, where both sulfurs are bound to gold. The frictional response was proportional to the load. However, once the load went beyond a threshold value, the frictional response became more dominant. Such a frictional transition was reversible and repeatable and was not discerned for a corresponding SAM composed of n-alkyl chains. The load-induced change in the frictional response from the alkane loops could be associated with the conformational change of the alkane loops. The present results differ from most studies, in which the surface properties are designed on the basis of functional chain end groups.

Original languageEnglish
Pages (from-to)2396-2401
Number of pages6
JournalLangmuir
Volume33
Issue number9
DOIs
Publication statusPublished - Mar 7 2017

Fingerprint

Alkanes
Self assembled monolayers
Paraffins
alkanes
surface properties
Gold
gold
Surface properties
sulfur
Sulfur
thresholds
Molecules
molecules
Substrates

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Load-Induced Frictional Transition at a Well-Defined Alkane Loop Surface. / Shundo, Atsuomi; Hori, Koichiro; Tezuka, Yasuyuki; Yamamoto, Takuya; Tanaka, Keiji.

In: Langmuir, Vol. 33, No. 9, 07.03.2017, p. 2396-2401.

Research output: Contribution to journalArticle

Shundo, Atsuomi ; Hori, Koichiro ; Tezuka, Yasuyuki ; Yamamoto, Takuya ; Tanaka, Keiji. / Load-Induced Frictional Transition at a Well-Defined Alkane Loop Surface. In: Langmuir. 2017 ; Vol. 33, No. 9. pp. 2396-2401.
@article{9db2caba191a4194a7e8d72f348f0a60,
title = "Load-Induced Frictional Transition at a Well-Defined Alkane Loop Surface",
abstract = "Self-assembled monolayers (SAMs) have attracted considerable attention as a tool to confer desirable properties on material surfaces. So far, molecules used for the SAM formation are generally limited to linear ones and thus chain ends dominate the surface properties. In this study, we have successfully demonstrated unique frictional properties of a SAM composed of alkane loops from cyclic alkanedisulfide on a gold substrate, where both sulfurs are bound to gold. The frictional response was proportional to the load. However, once the load went beyond a threshold value, the frictional response became more dominant. Such a frictional transition was reversible and repeatable and was not discerned for a corresponding SAM composed of n-alkyl chains. The load-induced change in the frictional response from the alkane loops could be associated with the conformational change of the alkane loops. The present results differ from most studies, in which the surface properties are designed on the basis of functional chain end groups.",
author = "Atsuomi Shundo and Koichiro Hori and Yasuyuki Tezuka and Takuya Yamamoto and Keiji Tanaka",
year = "2017",
month = "3",
day = "7",
doi = "10.1021/acs.langmuir.6b04042",
language = "English",
volume = "33",
pages = "2396--2401",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "9",

}

TY - JOUR

T1 - Load-Induced Frictional Transition at a Well-Defined Alkane Loop Surface

AU - Shundo, Atsuomi

AU - Hori, Koichiro

AU - Tezuka, Yasuyuki

AU - Yamamoto, Takuya

AU - Tanaka, Keiji

PY - 2017/3/7

Y1 - 2017/3/7

N2 - Self-assembled monolayers (SAMs) have attracted considerable attention as a tool to confer desirable properties on material surfaces. So far, molecules used for the SAM formation are generally limited to linear ones and thus chain ends dominate the surface properties. In this study, we have successfully demonstrated unique frictional properties of a SAM composed of alkane loops from cyclic alkanedisulfide on a gold substrate, where both sulfurs are bound to gold. The frictional response was proportional to the load. However, once the load went beyond a threshold value, the frictional response became more dominant. Such a frictional transition was reversible and repeatable and was not discerned for a corresponding SAM composed of n-alkyl chains. The load-induced change in the frictional response from the alkane loops could be associated with the conformational change of the alkane loops. The present results differ from most studies, in which the surface properties are designed on the basis of functional chain end groups.

AB - Self-assembled monolayers (SAMs) have attracted considerable attention as a tool to confer desirable properties on material surfaces. So far, molecules used for the SAM formation are generally limited to linear ones and thus chain ends dominate the surface properties. In this study, we have successfully demonstrated unique frictional properties of a SAM composed of alkane loops from cyclic alkanedisulfide on a gold substrate, where both sulfurs are bound to gold. The frictional response was proportional to the load. However, once the load went beyond a threshold value, the frictional response became more dominant. Such a frictional transition was reversible and repeatable and was not discerned for a corresponding SAM composed of n-alkyl chains. The load-induced change in the frictional response from the alkane loops could be associated with the conformational change of the alkane loops. The present results differ from most studies, in which the surface properties are designed on the basis of functional chain end groups.

UR - http://www.scopus.com/inward/record.url?scp=85014803117&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014803117&partnerID=8YFLogxK

U2 - 10.1021/acs.langmuir.6b04042

DO - 10.1021/acs.langmuir.6b04042

M3 - Article

AN - SCOPUS:85014803117

VL - 33

SP - 2396

EP - 2401

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 9

ER -