A thiol-substituted carotenoid self-assembles on gold surfaces

Dezhong Liu; Gregory J. Szulczewski; Lowell D. Kispert; Alex Primak; Thomas Moore; Ana Moore; Devens Gust

doi:10.1021/jp011876a

A thiol-substituted carotenoid self-assembles on gold surfaces

Dezhong Liu, Gregory J. Szulczewski, Lowell D. Kispert, Alex Primak, Thomas Moore, Ana Moore, Devens Gust

Molecular Sciences, School of (SMS)

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

27 Scopus citations

Abstract

A thiol-substituted carotenoid, 7′-apo-7′-(4-mercaptomethylphenyl)-β-carotene, (AMC) was allowed to selfassemble on polycrystalline gold surfaces. The stability, packing density, optical absorption, and hydrophobicity of the resulting monolayers were investigated with X-ray photoelectron spectroscopy (XPS), Fourier transform infrared reflection-absorption spectroscopy (FTIR-RAS), UV-Vis spectroscopy, spectroscopic ellipsometry, and contact angle measurements. XPS and spectroscopic ellipsometry measurements reveal the saturation coverage is ∼4 × 10¹⁴ AMC molecules/cm² and the film thickness is ∼20 Å, respectively. FTIR-RAS and contact angle measurements suggest that the polyene chains are packed well enough to create a hydrophobic interface.

Original language	English (US)
Pages (from-to)	2933-2936
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	106
Issue number	11
DOIs	https://doi.org/10.1021/jp011876a
State	Published - Mar 21 2002

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "A thiol-substituted carotenoid self-assembles on gold surfaces",

abstract = "A thiol-substituted carotenoid, 7′-apo-7′-(4-mercaptomethylphenyl)-β-carotene, (AMC) was allowed to selfassemble on polycrystalline gold surfaces. The stability, packing density, optical absorption, and hydrophobicity of the resulting monolayers were investigated with X-ray photoelectron spectroscopy (XPS), Fourier transform infrared reflection-absorption spectroscopy (FTIR-RAS), UV-Vis spectroscopy, spectroscopic ellipsometry, and contact angle measurements. XPS and spectroscopic ellipsometry measurements reveal the saturation coverage is ∼4 × 1014 AMC molecules/cm2 and the film thickness is ∼20 {\AA}, respectively. FTIR-RAS and contact angle measurements suggest that the polyene chains are packed well enough to create a hydrophobic interface.",

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T1 - A thiol-substituted carotenoid self-assembles on gold surfaces

AU - Liu, Dezhong

AU - Szulczewski, Gregory J.

AU - Kispert, Lowell D.

AU - Primak, Alex

AU - Moore, Thomas

AU - Moore, Ana

AU - Gust, Devens

PY - 2002/3/21

Y1 - 2002/3/21

N2 - A thiol-substituted carotenoid, 7′-apo-7′-(4-mercaptomethylphenyl)-β-carotene, (AMC) was allowed to selfassemble on polycrystalline gold surfaces. The stability, packing density, optical absorption, and hydrophobicity of the resulting monolayers were investigated with X-ray photoelectron spectroscopy (XPS), Fourier transform infrared reflection-absorption spectroscopy (FTIR-RAS), UV-Vis spectroscopy, spectroscopic ellipsometry, and contact angle measurements. XPS and spectroscopic ellipsometry measurements reveal the saturation coverage is ∼4 × 1014 AMC molecules/cm2 and the film thickness is ∼20 Å, respectively. FTIR-RAS and contact angle measurements suggest that the polyene chains are packed well enough to create a hydrophobic interface.

AB - A thiol-substituted carotenoid, 7′-apo-7′-(4-mercaptomethylphenyl)-β-carotene, (AMC) was allowed to selfassemble on polycrystalline gold surfaces. The stability, packing density, optical absorption, and hydrophobicity of the resulting monolayers were investigated with X-ray photoelectron spectroscopy (XPS), Fourier transform infrared reflection-absorption spectroscopy (FTIR-RAS), UV-Vis spectroscopy, spectroscopic ellipsometry, and contact angle measurements. XPS and spectroscopic ellipsometry measurements reveal the saturation coverage is ∼4 × 1014 AMC molecules/cm2 and the film thickness is ∼20 Å, respectively. FTIR-RAS and contact angle measurements suggest that the polyene chains are packed well enough to create a hydrophobic interface.

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A thiol-substituted carotenoid self-assembles on gold surfaces

Abstract

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