Template-directed assembly of pentacene molecules on epitaxial graphene on Ru(0001)

Haitao Zhou; Lizhi Zhang; Jinhai Mao; Geng Li; Yi Zhang; Yeliang Wang; Shixuan Du; Werner A. Hofer; Hong Jun Gao

doi:10.1007/s12274-013-0288-8

Template-directed assembly of pentacene molecules on epitaxial graphene on Ru(0001)

Haitao Zhou, Lizhi Zhang, Jinhai Mao, Geng Li, Yi Zhang, Yeliang Wang, Shixuan Du^*, Werner A. Hofer, Hong Jun Gao

^*Corresponding author for this work

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

35 Citations (Scopus)

Abstract

The template-directed assembly of planar pentacene molecules on epitaxial graphene grown on Ru(0001) (G/Ru) has been investigated by means of low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM experiments find that pentacene adopts a highly selective and dispersed growth mode in the initial stage. By using DFT calculations including van der Waals interactions, we find that the configuration with pentacene adsorbed on face-centered cubic (fcc) regions of G/Ru is the most stable one, which accounts for the selective adsorption at low coverage. Moreover, at high coverage, we have successfully controlled the molecular assembly from amorphous, local ordering, to long-range order by optimizing the deposition rate and substrate temperature. Graphical abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	131-137
Number of pages	7
Journal	Nano Research
Volume	6
Issue number	2
DOIs	https://doi.org/10.1007/s12274-013-0288-8
Publication status	Published - Feb 2013
Externally published	Yes

Keywords

Ru(0001)
density functional theory (DFT)
graphene
pentacene
scanning tunneling microscopy (STM)
self-assembly

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10.1007/s12274-013-0288-8

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title = "Template-directed assembly of pentacene molecules on epitaxial graphene on Ru(0001)",

abstract = "The template-directed assembly of planar pentacene molecules on epitaxial graphene grown on Ru(0001) (G/Ru) has been investigated by means of low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM experiments find that pentacene adopts a highly selective and dispersed growth mode in the initial stage. By using DFT calculations including van der Waals interactions, we find that the configuration with pentacene adsorbed on face-centered cubic (fcc) regions of G/Ru is the most stable one, which accounts for the selective adsorption at low coverage. Moreover, at high coverage, we have successfully controlled the molecular assembly from amorphous, local ordering, to long-range order by optimizing the deposition rate and substrate temperature. Graphical abstract: [Figure not available: see fulltext.]",

keywords = "Ru(0001), density functional theory (DFT), graphene, pentacene, scanning tunneling microscopy (STM), self-assembly",

author = "Haitao Zhou and Lizhi Zhang and Jinhai Mao and Geng Li and Yi Zhang and Yeliang Wang and Shixuan Du and Hofer, {Werner A.} and Gao, {Hong Jun}",

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T1 - Template-directed assembly of pentacene molecules on epitaxial graphene on Ru(0001)

AU - Zhou, Haitao

AU - Zhang, Lizhi

AU - Mao, Jinhai

AU - Li, Geng

AU - Zhang, Yi

AU - Wang, Yeliang

AU - Du, Shixuan

AU - Hofer, Werner A.

AU - Gao, Hong Jun

PY - 2013/2

Y1 - 2013/2

N2 - The template-directed assembly of planar pentacene molecules on epitaxial graphene grown on Ru(0001) (G/Ru) has been investigated by means of low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM experiments find that pentacene adopts a highly selective and dispersed growth mode in the initial stage. By using DFT calculations including van der Waals interactions, we find that the configuration with pentacene adsorbed on face-centered cubic (fcc) regions of G/Ru is the most stable one, which accounts for the selective adsorption at low coverage. Moreover, at high coverage, we have successfully controlled the molecular assembly from amorphous, local ordering, to long-range order by optimizing the deposition rate and substrate temperature. Graphical abstract: [Figure not available: see fulltext.]

AB - The template-directed assembly of planar pentacene molecules on epitaxial graphene grown on Ru(0001) (G/Ru) has been investigated by means of low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. STM experiments find that pentacene adopts a highly selective and dispersed growth mode in the initial stage. By using DFT calculations including van der Waals interactions, we find that the configuration with pentacene adsorbed on face-centered cubic (fcc) regions of G/Ru is the most stable one, which accounts for the selective adsorption at low coverage. Moreover, at high coverage, we have successfully controlled the molecular assembly from amorphous, local ordering, to long-range order by optimizing the deposition rate and substrate temperature. Graphical abstract: [Figure not available: see fulltext.]

KW - Ru(0001)

KW - density functional theory (DFT)

KW - graphene

KW - pentacene

KW - scanning tunneling microscopy (STM)

KW - self-assembly

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SP - 131

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JO - Nano Research

JF - Nano Research

IS - 2

ER -

Template-directed assembly of pentacene molecules on epitaxial graphene on Ru(0001)

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Keywords

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