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Title: Structure and Function Evolution of Thiolate Monolayers on Gold

Abstract

The use of n-alkanethiolate self-assembled monolayers on gold has blossomed in the past few years. These systems have functioned as models for common interfaces. Thiolate monolayers are ideal because they are easily modified before or after deposition. The works contained within this dissertation include interfacial characterization (inbred reflection absorption spectroscopy, ellipsometry, contact angle, scanning probe microscopy, and heterogeneous electron-transfer kinetics) and various modeling scenarios. The results of these characterizations present ground-breaking insights into the structure, function, and reproducible preparation of these monolayers. Surprisingly, three interfacial properties (electron-transfer, contact angle, and ellipsometry) were discovered to depend directly on the odd-even character of the monolayer components. Molecular modeling was utilized to investigate adlayer orientation, and suggests that these effects are adlayer structure specific. Finally, the electric force microscopy and theoretical modeling investigations of monolayer samples are presented, which show that the film dielectric constant, thickness, and dipole moment directly affect image contrast. In addition, the prospects for utilization of this emerging technique are outlined.

Authors:
 [1]
  1. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
888936
Report Number(s):
IS-T 2042
TRN: US200619%%312
DOE Contract Number:
W-7405-Eng-82
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; DEPOSITION; DIPOLE MOMENTS; ELECTRON TRANSFER; ELLIPSOMETRY; GOLD; KINETICS; MICROSCOPY; ORIENTATION; PERMITTIVITY; PROBES; REFLECTION; SIMULATION; THICKNESS

Citation Formats

Edwards, Grant Alvin. Structure and Function Evolution of Thiolate Monolayers on Gold. United States: N. p., 2006. Web. doi:10.2172/888936.
Edwards, Grant Alvin. Structure and Function Evolution of Thiolate Monolayers on Gold. United States. doi:10.2172/888936.
Edwards, Grant Alvin. Sun . "Structure and Function Evolution of Thiolate Monolayers on Gold". United States. doi:10.2172/888936. https://www.osti.gov/servlets/purl/888936.
@article{osti_888936,
title = {Structure and Function Evolution of Thiolate Monolayers on Gold},
author = {Edwards, Grant Alvin},
abstractNote = {The use of n-alkanethiolate self-assembled monolayers on gold has blossomed in the past few years. These systems have functioned as models for common interfaces. Thiolate monolayers are ideal because they are easily modified before or after deposition. The works contained within this dissertation include interfacial characterization (inbred reflection absorption spectroscopy, ellipsometry, contact angle, scanning probe microscopy, and heterogeneous electron-transfer kinetics) and various modeling scenarios. The results of these characterizations present ground-breaking insights into the structure, function, and reproducible preparation of these monolayers. Surprisingly, three interfacial properties (electron-transfer, contact angle, and ellipsometry) were discovered to depend directly on the odd-even character of the monolayer components. Molecular modeling was utilized to investigate adlayer orientation, and suggests that these effects are adlayer structure specific. Finally, the electric force microscopy and theoretical modeling investigations of monolayer samples are presented, which show that the film dielectric constant, thickness, and dipole moment directly affect image contrast. In addition, the prospects for utilization of this emerging technique are outlined.},
doi = {10.2172/888936},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Thesis/Dissertation:
Other availability
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