Octadecanethiolate monolayer

Tarlov MJ (1992) Silver metalization of octadecanethiol monolayers self-assembled on gold. Langmuir 8 80-89... 

Widrig CA, Alves CA, Porter MD (1991) Scanning tunneling microscopy of ethanthiolate and n-octadecanethiolate monolayers spontaneously adsorbed at gold surfaces. J Am Chem Soc 113 2805-2810... 

FIGURE 21. Desorption of 35S-octadecanethiol monolayers on gold upon immersion in pure solvents at room temperature water ( ), hexane (+), ethanol ( ), THF (A), 0.1 M aqueous HCIO4 ( ). Reprinted with permission from Reference 80, Copyright (1995) American Chemical Society... 

Exposure of octadecanethiol monolayer to the small phospholipid vesicles leads to their unrolling and adsorption of a single lipid layer on top of the octadecanethiol film. Unrolling of vesicles on the surface of the hydrophilic monolayer, however, leads to the formation of the lipid bilayer on top of the original film. This principle was used by Evans and coworkers to create lipid bilayers supported by cholesterol moieties present in a mixed gold-thiol monolayer (Figure 28)430. 

Widrig C A, Alves C A and Porter M D 1991 Scanning tunneling microscopy of ethanethiolate and normal-octadecanethiolate monolayers spontaneously adsorbed at gold surfaces J. Am. Chem. Soc. 113 2805-10... 

Lisensky, G. Octadecanethiol Monolayer on Silver. http //www.mrsec.wisc.edu/Edetc/nanolab/Agthiol/index.html (July, 2007). 

Colavita PE, Doescher MS, Molliet A, Evans U, Reddic J, Zhou J, Chen D, Miney PG, Myrick ML (2002) Effects of metal coating on self-assembled monolayers on gold. 1. Copper on dodecanethiol and octadecanethiol. Langmuir 18(22) 8503-8509... 

Brett etal. [103] have studied selfassembling of 1-decanethiol at the fixed positive potentials of pc-Au electrode in chronoamperometry and quartz crystal microgravimetry. The obtained layers appeared to have improved quality and were produced faster than in the open-circuit deposition. The factors possibly influencing the fine structure of monolayers observed in voltammetric reductive desorption and oxidative redeposition of long-chain alka-nethiolates, for example, hexadecanethiol (HT) and octadecanethiol on smooth Au electrodes have been discussed [104]. It has been shown that the local order of adlayer has a role to play in the formation of that fine structure. 

Inhibiting properties may be influenced by the solvent molecules trapped within the monolayer during self-assembly of octadecanethiol molecules on gold electrodes [107]. 

We have also used grazing-angle FTIR to study alkanethiol monolayers on gold and silver surfaces. Figures 10 and 11 present the spectra in the C-H stretch region of 2800-3100 cm 1 for monolayers of octadecanethiol on gold (ODT/Au) and on... 

Monolayers derived from 1-octadecanethiol are penetrated by organic adsorbed vapors, while those derived from 11-mercapto-l-undecanol are not, as determined by ellipsometry... 

Gas-phase adsorption of polar (methanol, acetonitrile, acetone) and non-polar adsorbates (hexane) on the surface of non-polar (hexadecanethiol) and polar (11-mercaptoundecanol) monolayers on gold was reported by Blanchard and Karpovich. The adsorption curves were fitted by a BET isotherm. The data suggest that an octadecanethiol surface is to some extent permeable for the adsorbates409. 

Laval and coworkers similarly prepared a monolayer of a lipid on top of the octadecanethiol film on gold. The enzyme pyruvate oxidase was then incorporated in the lipid layer in a fashion similar to that of lipid vesicles, and the activity of the immobilized enzyme was measured431. 

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