Controlling C60 organization through dipole-induced band alignment at self-assembled monolayer interfaces

Mohamed A. Mezour; Oleksandr Voznyy; Edward H. Sargent; R. Bruce Lennox; Dmitrii F. Perepichka

doi:10.1021/acs.chemmater.6b03527

Controlling C₆₀ organization through dipole-induced band alignment at self-assembled monolayer interfaces

Mohamed A. Mezour, Oleksandr Voznyy, Edward H. Sargent, R. Bruce Lennox^*, Dmitrii F. Perepichka

^*Corresponding author for this work

Chemistry

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

8 Scopus citations

Abstract

Understanding the structural organization and growth of organic molecules on self-assembled monolayers (SAMs) is crucial for creating high-performance SAM-based electronic devices. We report herein C₆₀ adsorption onto benzenethiol (BT), pentafluorobenzenethiol (PFBT), and octanethiol (C8SH) SAM-modified Au(111) studied using scanning tunneling microscopy at the liquid-solid interface. A continuous film of C₆₀ molecules forms at a much faster rate (k = 3.3 × 10^-7 s^-1) on PFBT compared to that on BT (k = 7.2 × 10^-9 s^-1) and C8SH SAMs (k = 9.5 × 10^-9 s^-1). On the basis of density functional theory calculations, we propose that the difference in C₆₀ growth behavior originates from the dipole-induced dipole interactions between the SAM and C₆₀. This may be further augmented by an inverse charge transfer from C₆₀ to SAM. This work provides new insights into the self-assembly behavior of next-generation electronic materials.

Original language	English (US)
Pages (from-to)	8322-8329
Number of pages	8
Journal	Chemistry of Materials
Volume	28
Issue number	22
DOIs	https://doi.org/10.1021/acs.chemmater.6b03527
State	Published - Nov 22 2016

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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10.1021/acs.chemmater.6b03527

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title = "Controlling C60 organization through dipole-induced band alignment at self-assembled monolayer interfaces",

abstract = "Understanding the structural organization and growth of organic molecules on self-assembled monolayers (SAMs) is crucial for creating high-performance SAM-based electronic devices. We report herein C60 adsorption onto benzenethiol (BT), pentafluorobenzenethiol (PFBT), and octanethiol (C8SH) SAM-modified Au(111) studied using scanning tunneling microscopy at the liquid-solid interface. A continuous film of C60 molecules forms at a much faster rate (k = 3.3 × 10-7 s-1) on PFBT compared to that on BT (k = 7.2 × 10-9 s-1) and C8SH SAMs (k = 9.5 × 10-9 s-1). On the basis of density functional theory calculations, we propose that the difference in C60 growth behavior originates from the dipole-induced dipole interactions between the SAM and C60. This may be further augmented by an inverse charge transfer from C60 to SAM. This work provides new insights into the self-assembly behavior of next-generation electronic materials.",

author = "Mezour, {Mohamed A.} and Oleksandr Voznyy and Sargent, {Edward H.} and Lennox, {R. Bruce} and Perepichka, {Dmitrii F.}",

note = "Funding Information: This work was funded by NSERC Discovery and FQRNT Team grants (to R.B.L. and D.F.P.). M.A.M. thanks NSERC and FQRNT for doctoral fellowships. E.H.S. acknowledges funding from a NSERC Discovery grant and the Research Excellence Program of the Ontario Research Fund. We thank Pelayo Garcia de Arquer for help with experiments. Computations were performed using the BlueGene/Q supercomputer at the SciNet HPC Consortium provided through the Southern Ontario Smart Computing Innovation Platform (SOSCIP). Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Perepichka, Dmitrii F.

N1 - Funding Information: This work was funded by NSERC Discovery and FQRNT Team grants (to R.B.L. and D.F.P.). M.A.M. thanks NSERC and FQRNT for doctoral fellowships. E.H.S. acknowledges funding from a NSERC Discovery grant and the Research Excellence Program of the Ontario Research Fund. We thank Pelayo Garcia de Arquer for help with experiments. Computations were performed using the BlueGene/Q supercomputer at the SciNet HPC Consortium provided through the Southern Ontario Smart Computing Innovation Platform (SOSCIP). Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/11/22

Y1 - 2016/11/22

N2 - Understanding the structural organization and growth of organic molecules on self-assembled monolayers (SAMs) is crucial for creating high-performance SAM-based electronic devices. We report herein C60 adsorption onto benzenethiol (BT), pentafluorobenzenethiol (PFBT), and octanethiol (C8SH) SAM-modified Au(111) studied using scanning tunneling microscopy at the liquid-solid interface. A continuous film of C60 molecules forms at a much faster rate (k = 3.3 × 10-7 s-1) on PFBT compared to that on BT (k = 7.2 × 10-9 s-1) and C8SH SAMs (k = 9.5 × 10-9 s-1). On the basis of density functional theory calculations, we propose that the difference in C60 growth behavior originates from the dipole-induced dipole interactions between the SAM and C60. This may be further augmented by an inverse charge transfer from C60 to SAM. This work provides new insights into the self-assembly behavior of next-generation electronic materials.

AB - Understanding the structural organization and growth of organic molecules on self-assembled monolayers (SAMs) is crucial for creating high-performance SAM-based electronic devices. We report herein C60 adsorption onto benzenethiol (BT), pentafluorobenzenethiol (PFBT), and octanethiol (C8SH) SAM-modified Au(111) studied using scanning tunneling microscopy at the liquid-solid interface. A continuous film of C60 molecules forms at a much faster rate (k = 3.3 × 10-7 s-1) on PFBT compared to that on BT (k = 7.2 × 10-9 s-1) and C8SH SAMs (k = 9.5 × 10-9 s-1). On the basis of density functional theory calculations, we propose that the difference in C60 growth behavior originates from the dipole-induced dipole interactions between the SAM and C60. This may be further augmented by an inverse charge transfer from C60 to SAM. This work provides new insights into the self-assembly behavior of next-generation electronic materials.

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Controlling C₆₀ organization through dipole-induced band alignment at self-assembled monolayer interfaces

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