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Title: Self-assembled monolayer films of C[sub 60]/on cysteamine-modified gold

Abstract

Self-assembled monolayer films (SAMs) of C[sub 60] on cysteamine-modified and cysteamine/ethanethiol-modified Au are reported. The monolayers were characterized via contact angle measurements, X-ray photoelectron spectroscopy, electrochemistry, and quartz crystal microbalance (QCM) measurements. C[sub 60] surface coverage (2.0 [times] 10[sup [minus]10] mol/cm[sup 2]) for a film formed on pure cysteamine was determined by QCM measurements and compares remarkably well with monolayer coverage (1.9 [times] 10[sup [minus]10] mol/cm[sup 2]) predicted by a model based on crystallographic data for C[sub 60]. These experiments demonstrate the utility of the QCM in characterizing and monitoring the growth of fullerene SAMs. C[sub 60] SAMs formed on pure cysteamine yield strikingly different electrochemical responses than those formed on prelayers consisting of varying ratios of ethanethiol and cysteamine and previously reported monolayers of C[sub 60] on (aminopropyl)silanized oxide surfaces. Although the C[sub 60] SAMs are stable under ambient conditions, the fullerenes may be desorbed from the surface through electrochemical reduction of the films for extended periods of time (> 10 min). 11 refs., 2 figs.

Authors:
; ; ;  [1]
  1. Northwestern Univ., Evanston, IL (United States) Dow Chemical Company, Midland, MI (United States)
Publication Date:
OSTI Identifier:
5999235
Resource Type:
Journal Article
Journal Name:
Langmuir; (United States)
Additional Journal Information:
Journal Volume: 9:8; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; FULLERENES; ADSORPTION; DESORPTION; GOLD; SURFACE PROPERTIES; MEA; THIN FILMS; AMINES; CARBON; DRUGS; ELEMENTS; FILMS; METALS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RADIOPROTECTIVE SUBSTANCES; SORPTION; THIOLS; TRANSITION ELEMENTS; 400201* - Chemical & Physicochemical Properties; 360104 - Metals & Alloys- Physical Properties

Citation Formats

Caldwell, W B, Chen, K, Mirkin, C A, and Babinec, S J. Self-assembled monolayer films of C[sub 60]/on cysteamine-modified gold. United States: N. p., 1993. Web. doi:10.1021/la00032a002.
Caldwell, W B, Chen, K, Mirkin, C A, & Babinec, S J. Self-assembled monolayer films of C[sub 60]/on cysteamine-modified gold. United States. https://doi.org/10.1021/la00032a002
Caldwell, W B, Chen, K, Mirkin, C A, and Babinec, S J. 1993. "Self-assembled monolayer films of C[sub 60]/on cysteamine-modified gold". United States. https://doi.org/10.1021/la00032a002.
@article{osti_5999235,
title = {Self-assembled monolayer films of C[sub 60]/on cysteamine-modified gold},
author = {Caldwell, W B and Chen, K and Mirkin, C A and Babinec, S J},
abstractNote = {Self-assembled monolayer films (SAMs) of C[sub 60] on cysteamine-modified and cysteamine/ethanethiol-modified Au are reported. The monolayers were characterized via contact angle measurements, X-ray photoelectron spectroscopy, electrochemistry, and quartz crystal microbalance (QCM) measurements. C[sub 60] surface coverage (2.0 [times] 10[sup [minus]10] mol/cm[sup 2]) for a film formed on pure cysteamine was determined by QCM measurements and compares remarkably well with monolayer coverage (1.9 [times] 10[sup [minus]10] mol/cm[sup 2]) predicted by a model based on crystallographic data for C[sub 60]. These experiments demonstrate the utility of the QCM in characterizing and monitoring the growth of fullerene SAMs. C[sub 60] SAMs formed on pure cysteamine yield strikingly different electrochemical responses than those formed on prelayers consisting of varying ratios of ethanethiol and cysteamine and previously reported monolayers of C[sub 60] on (aminopropyl)silanized oxide surfaces. Although the C[sub 60] SAMs are stable under ambient conditions, the fullerenes may be desorbed from the surface through electrochemical reduction of the films for extended periods of time (> 10 min). 11 refs., 2 figs.},
doi = {10.1021/la00032a002},
url = {https://www.osti.gov/biblio/5999235}, journal = {Langmuir; (United States)},
issn = {0743-7463},
number = ,
volume = 9:8,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 1993},
month = {Sun Aug 01 00:00:00 EDT 1993}
}