Characterization of Self-Assembled Monolayers of Fullerene Derivatives on Gold Surfaces: Implications for Device Evaluations
- 23 September 2006
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 128 (41), 13479-13489
- https://doi.org/10.1021/ja063451d
Abstract
The widely employed approach to self-assembly of fullerene derivatives on gold can be complicated due to multilayer formations and head-to-tail assemblies resulting from the strong fullerene−fullerene and fullerene−gold interactions. These anomalies were not examined in detail in previous studies on fullerene self-assembled monolayers (SAMs) but were clearly detected in the present work using surface characterization techniques including ellipsometry, cyclic voltammetry (CV), and X-ray photoelectron spectroscopy (XPS). This is the first time that SAMs prepared from fullerene derivatives of thiols/thiol esters/disulfides have been analyzed in detail, and the complications due to multilayer formations and head-to-tail assemblies were revealed. Specifically, we designed and synthesized several fullerene derivatives based on thiols, thiol acetates, and disulfides to address the characterization requirements, and these are described and delineated. These studies specifically address the need to properly characterize and control fullerene−thiol assemblies on gold before evaluating subsequent device performances.Keywords
This publication has 42 references indexed in Scilit:
- Directional Control in Thermally Driven Single-Molecule NanocarsNano Letters, 2005
- Polarized near-edge x-ray-absorption fine structure spectroscopy of C60-functionalized 11-amino-1-undecane thiol self-assembled monolayer: Molecular orientation and Evidence for C60 aggregationThe Journal of Chemical Physics, 2005
- Fabrication of Ordered Arrays of Gold Nanoparticles Coated with High‐Density Polymer BrushesAngewandte Chemie-International Edition, 2003
- Crystalline C60monolayers at the solid–organic solution interfaceJournal of Materials Chemistry, 2002
- Scanning Tunneling Microscopy and Spectroscopy of Dialkyl Disulfide Fullerenes Inserted into Alkanethiolate SAMsThe Journal of Physical Chemistry B, 1999
- Organic Photoelectrochemical Cell Mimicking Photoinduced Multistep Electron Transfer in Photosynthesis: Interfacial Structure and Photoelectrochemical Properties of Self-Assembled Monolayers of Porphyrin-Linked Fullerenes on Gold ElectrodesBulletin of the Chemical Society of Japan, 1999
- Atomic Force Microscopy of C60 Tethered to a Self-Assembled MonolayerLangmuir, 1994
- Self-assembled monolayer films of fullerene C60 on cysteamine-modified goldLangmuir, 1993
- Surface-enhanced Raman scattering and photoemission ofon noble-metal surfacesPhysical Review B, 1992
- Improved charge separation and photosensitized hydrogen evolution from water with titanium dioxide particles on colloidal silica carriersJournal of the American Chemical Society, 1987