A Thiol-Substituted Carotenoid Self-Assembles on Gold Surfaces

Autor:	Alex Primak, Devens Gust, Dezhong Liu, Thomas A. Moore, Ana L. Moore, Gregory J. Szulczewski, Lowell D. Kispert
Rok vydání:	2002
Předmět:	Contact angle Crystallography Materials science X-ray photoelectron spectroscopy Infrared Monolayer Materials Chemistry Molecule Crystallite Physical and Theoretical Chemistry Absorption (chemistry) Spectroscopy Surfaces Coatings and Films
Zdroj:	The Journal of Physical Chemistry B. 106:2933-2936
ISSN:	1520-5207 1520-6106
DOI:	10.1021/jp011876a
Popis:	A thiol-substituted carotenoid, 7‘-apo-7‘-(4-mercaptomethylphenyl)-β-carotene, (AMC) was allowed to self-assemble 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 A, respectively. FTIR-RAS and contact angle measurements suggest that the polyene chains are packed well enough to create a hydrophobic interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd08f0382b2f6e9427b8450cc053af1c https://doi.org/10.1021/jp011876a Zobrazit plný text záznamu