Formation and decay of a compressed phase of 4,4'-biphenyldicarboxylic acid on Cu(001)

Daniel Schwarz, Raoul van Gastel, Henricus J.W. Zandvliet, Bene Poelsema

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

The molecular arrangement of 4,4′-biphenyldicarboxylic acid (BDA) on Cu(001) has been studied at high coverage and relatively high temperature (∼400 K) using Low Energy Electron Microscopy, LEEM, and selected area diffraction, μLEED. Next to the previously reported c(8 × 8) structure, we also observe a compressed phase with a Image ID:c3cp00049d-t1.gif superstructure in matrix notation. All four equivalent (rotational and mirror) domains are equally populated. Both the c(8 × 8) and the compressed phase are confined to the first layer and the latter has a 14% higher density compared to the c(8 × 8) phase. Remarkably, this compressed phase is stable only during deposition and decays after interruption of the deposition. Apparently, the density of physisorbed admolecules on top of the c(8 × 8) layer has to be above a relevant threshold to allow the formation of the compressed phase.
Original languageEnglish
Pages (from-to)5007-5016
Number of pages10
JournalPhysical chemistry chemical physics
Volume15
Issue number14
DOIs
Publication statusPublished - 7 Feb 2013

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acids
interruption
decay
Electron microscopy
electron microscopy
coding
Mirrors
Diffraction
mirrors
Acids
thresholds
matrices
diffraction
Temperature
4,4'-biphenyldicarboxylic acid
energy

Keywords

  • METIS-295658
  • IR-89907

Cite this

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title = "Formation and decay of a compressed phase of 4,4'-biphenyldicarboxylic acid on Cu(001)",
abstract = "The molecular arrangement of 4,4′-biphenyldicarboxylic acid (BDA) on Cu(001) has been studied at high coverage and relatively high temperature (∼400 K) using Low Energy Electron Microscopy, LEEM, and selected area diffraction, μLEED. Next to the previously reported c(8 × 8) structure, we also observe a compressed phase with a Image ID:c3cp00049d-t1.gif superstructure in matrix notation. All four equivalent (rotational and mirror) domains are equally populated. Both the c(8 × 8) and the compressed phase are confined to the first layer and the latter has a 14{\%} higher density compared to the c(8 × 8) phase. Remarkably, this compressed phase is stable only during deposition and decays after interruption of the deposition. Apparently, the density of physisorbed admolecules on top of the c(8 × 8) layer has to be above a relevant threshold to allow the formation of the compressed phase.",
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language = "English",
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publisher = "Royal Society of Chemistry",
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Formation and decay of a compressed phase of 4,4'-biphenyldicarboxylic acid on Cu(001). / Schwarz, Daniel; van Gastel, Raoul; Zandvliet, Henricus J.W.; Poelsema, Bene.

In: Physical chemistry chemical physics, Vol. 15, No. 14, 07.02.2013, p. 5007-5016.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Formation and decay of a compressed phase of 4,4'-biphenyldicarboxylic acid on Cu(001)

AU - Schwarz, Daniel

AU - van Gastel, Raoul

AU - Zandvliet, Henricus J.W.

AU - Poelsema, Bene

PY - 2013/2/7

Y1 - 2013/2/7

N2 - The molecular arrangement of 4,4′-biphenyldicarboxylic acid (BDA) on Cu(001) has been studied at high coverage and relatively high temperature (∼400 K) using Low Energy Electron Microscopy, LEEM, and selected area diffraction, μLEED. Next to the previously reported c(8 × 8) structure, we also observe a compressed phase with a Image ID:c3cp00049d-t1.gif superstructure in matrix notation. All four equivalent (rotational and mirror) domains are equally populated. Both the c(8 × 8) and the compressed phase are confined to the first layer and the latter has a 14% higher density compared to the c(8 × 8) phase. Remarkably, this compressed phase is stable only during deposition and decays after interruption of the deposition. Apparently, the density of physisorbed admolecules on top of the c(8 × 8) layer has to be above a relevant threshold to allow the formation of the compressed phase.

AB - The molecular arrangement of 4,4′-biphenyldicarboxylic acid (BDA) on Cu(001) has been studied at high coverage and relatively high temperature (∼400 K) using Low Energy Electron Microscopy, LEEM, and selected area diffraction, μLEED. Next to the previously reported c(8 × 8) structure, we also observe a compressed phase with a Image ID:c3cp00049d-t1.gif superstructure in matrix notation. All four equivalent (rotational and mirror) domains are equally populated. Both the c(8 × 8) and the compressed phase are confined to the first layer and the latter has a 14% higher density compared to the c(8 × 8) phase. Remarkably, this compressed phase is stable only during deposition and decays after interruption of the deposition. Apparently, the density of physisorbed admolecules on top of the c(8 × 8) layer has to be above a relevant threshold to allow the formation of the compressed phase.

KW - METIS-295658

KW - IR-89907

U2 - 10.1039/C3CP00049D

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JO - Physical chemistry chemical physics

JF - Physical chemistry chemical physics

SN - 1463-9076

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