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

Research output: Contribution to journalArticlepeer-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 languageEnglish (US)
Pages (from-to)8322-8329
Number of pages8
JournalChemistry of Materials
Volume28
Issue number22
DOIs
StatePublished - Nov 22 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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