Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)

Hairong Wu; Kai Sotthewes; Alejandro Méndez Ardoy; Tibor Kudernac; Jurriaan Huskens; Aufrid T.M. Lenferink; Cornelis Otto; Peter Manfred Schön; Gyula J. Vancso; Henricus J.W. Zandvliet

doi:10.1016/j.cplett.2014.09.007

Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)

Hairong Wu, Kai Sotthewes, Alejandro Méndez Ardoy, Tibor Kudernac, Jurriaan Huskens, Aufrid T.M. Lenferink, Cornelis Otto, Peter Manfred Schön, Gyula J. Vancso, Henricus J.W. Zandvliet

Research output: Contribution to journal › Article › Academic › peer-review

4 Citations (Scopus)

Abstract

Oligo(phenylene-ethynylene), self-assembled monolayers on Au(1 1 1) have been studied with scanning tunneling microscopy. The oligo(phenylene-ethynylene) molecules are adsorbed in a flat-lying orientation. Time-resolved scanning tunneling microscopy measurements reveal that the molecules continuously switch back and forth between two nearly degenerate configurations. The energy difference between the two configurations is 22 ± 5 meV and the activation barrier for the transition from the low-energy configuration to the high-energy configuration is 0.65 ± 0.03 eV. A statistical analysis of the residence times revealed that the switching process is stochastic. We propose that the two level switching is due to a torsional mode of the central phenyl ring.

Original language	English
Pages (from-to)	45-48
Number of pages	4
Journal	Chemical physics letters
Volume	614
DOIs	https://doi.org/10.1016/j.cplett.2014.09.007
Publication status	Published - 2014

Keywords

METIS-306239
IR-92982

Access to Document

10.1016/j.cplett.2014.09.007

Cite this

@article{9a146d4149b04b26a1f88354b177da0d,

title = "Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)",

abstract = "Oligo(phenylene-ethynylene), self-assembled monolayers on Au(1 1 1) have been studied with scanning tunneling microscopy. The oligo(phenylene-ethynylene) molecules are adsorbed in a flat-lying orientation. Time-resolved scanning tunneling microscopy measurements reveal that the molecules continuously switch back and forth between two nearly degenerate configurations. The energy difference between the two configurations is 22 ± 5 meV and the activation barrier for the transition from the low-energy configuration to the high-energy configuration is 0.65 ± 0.03 eV. A statistical analysis of the residence times revealed that the switching process is stochastic. We propose that the two level switching is due to a torsional mode of the central phenyl ring.",

keywords = "METIS-306239, IR-92982",

author = "Hairong Wu and Kai Sotthewes and {M{\'e}ndez Ardoy}, Alejandro and Tibor Kudernac and Jurriaan Huskens and Lenferink, {Aufrid T.M.} and Cornelis Otto and Sch{\"o}n, {Peter Manfred} and Vancso, {Gyula J.} and Zandvliet, {Henricus J.W.}",

year = "2014",

doi = "10.1016/j.cplett.2014.09.007",

language = "English",

volume = "614",

pages = "45--48",

journal = "Chemical physics letters",

issn = "0009-2614",

publisher = "Elsevier",

}

Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111). / Wu, Hairong; Sotthewes, Kai; Méndez Ardoy, Alejandro; Kudernac, Tibor; Huskens, Jurriaan; Lenferink, Aufrid T.M.; Otto, Cornelis; Schön, Peter Manfred; Vancso, Gyula J.; Zandvliet, Henricus J.W.

In: Chemical physics letters, Vol. 614, 2014, p. 45-48.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)

AU - Wu, Hairong

AU - Sotthewes, Kai

AU - Méndez Ardoy, Alejandro

AU - Kudernac, Tibor

AU - Huskens, Jurriaan

AU - Lenferink, Aufrid T.M.

AU - Otto, Cornelis

AU - Schön, Peter Manfred

AU - Vancso, Gyula J.

AU - Zandvliet, Henricus J.W.

PY - 2014

Y1 - 2014

N2 - Oligo(phenylene-ethynylene), self-assembled monolayers on Au(1 1 1) have been studied with scanning tunneling microscopy. The oligo(phenylene-ethynylene) molecules are adsorbed in a flat-lying orientation. Time-resolved scanning tunneling microscopy measurements reveal that the molecules continuously switch back and forth between two nearly degenerate configurations. The energy difference between the two configurations is 22 ± 5 meV and the activation barrier for the transition from the low-energy configuration to the high-energy configuration is 0.65 ± 0.03 eV. A statistical analysis of the residence times revealed that the switching process is stochastic. We propose that the two level switching is due to a torsional mode of the central phenyl ring.

AB - Oligo(phenylene-ethynylene), self-assembled monolayers on Au(1 1 1) have been studied with scanning tunneling microscopy. The oligo(phenylene-ethynylene) molecules are adsorbed in a flat-lying orientation. Time-resolved scanning tunneling microscopy measurements reveal that the molecules continuously switch back and forth between two nearly degenerate configurations. The energy difference between the two configurations is 22 ± 5 meV and the activation barrier for the transition from the low-energy configuration to the high-energy configuration is 0.65 ± 0.03 eV. A statistical analysis of the residence times revealed that the switching process is stochastic. We propose that the two level switching is due to a torsional mode of the central phenyl ring.

KW - METIS-306239

KW - IR-92982

U2 - 10.1016/j.cplett.2014.09.007

DO - 10.1016/j.cplett.2014.09.007

M3 - Article

VL - 614

SP - 45

EP - 48

JO - Chemical physics letters

JF - Chemical physics letters

SN - 0009-2614

ER -

Dynamics of oligo(phenylene-ethynylene) self-assembled monolayers on Au(111)

Abstract

Keywords

Access to Document

Fingerprint

Cite this