A thiol-substituted carotenoid self-assembles on gold surfaces

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

Research output: Contribution to journalArticle

26 Citations (Scopus)

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 languageEnglish
Pages (from-to)2933-2936
Number of pages4
JournalJournal of Physical Chemistry B
Volume106
Issue number11
DOIs
Publication statusPublished - Mar 21 2002

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carotenoids
Carotenoids
Sulfhydryl Compounds
thiols
Gold
carotene
Spectroscopic ellipsometry
infrared reflection
gold
Angle measurement
Absorption spectroscopy
ellipsometry
Contact angle
Fourier transforms
absorption spectroscopy
X ray photoelectron spectroscopy
photoelectron spectroscopy
Infrared radiation
Polyenes
packing density

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

A thiol-substituted carotenoid self-assembles on gold surfaces. / Liu, Dezhong; Szulczewski, Gregory J.; Kispert, Lowell D.; Primak, Alex; Moore, Thomas A; Moore, Ana L; Gust, John Devens.

In: Journal of Physical Chemistry B, Vol. 106, No. 11, 21.03.2002, p. 2933-2936.

Research output: Contribution to journalArticle

Liu, Dezhong ; Szulczewski, Gregory J. ; Kispert, Lowell D. ; Primak, Alex ; Moore, Thomas A ; Moore, Ana L ; Gust, John Devens. / A thiol-substituted carotenoid self-assembles on gold surfaces. In: Journal of Physical Chemistry B. 2002 ; Vol. 106, No. 11. pp. 2933-2936.
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