Self-Assembled Monolayers from Biphenyldithiol Derivatives: Optimization of the Deprotection Procedure and Effect of the Molecular Conformation was written by Shaporenko, Andrey;Elbing, Mark;Blaszczyk, Alfred;Von Haenisch, Carsten;Mayor, Marcel;Zharnikov, Michael. And the article was included in Journal of Physical Chemistry B in 2006.Application of 29364-29-2 This article mentions the following:
A series of biphenyl-derived dithiol (BDDT) compounds with terminal acetyl-protected sulfur groups and different structural arrangements of both Ph rings have been synthesized and fully characterized. The different arrangements were achieved by introducing hydrocarbon substituents in the 2 and 2′ positions of the biphenyl backbone. The presented model compounds enable the investigation of the correlation between the intramol. conformation and other phys. properties of interest, like, e.g., mol. assembly or electronic transport properties. Here, the ability of these model compounds to form self-assembled monolayers (SAMs) on Au(111) and Ag(111) is investigated in details. The deprotection of the target mols. was performed in situ using either NH4OH or triethylamine (TEA) deprotection agent. The fabricated films were characterized by synchrotron-based high-resolution photoelectron spectroscopy and near-edge absorption fine structure spectroscopy. Whereas the deprotection by NH4OH was found to result in the formation of multilayer films, the deprotection by TEA allowed the preparation of densely packed BDDT SAMs with a noticeably higher orientational order and smaller mol. inclination on Ag than on Au. Introduction of the alkyl bridge between the individual rings of the biphenyl backbone did not lead to a noticeable change in the structure and packing d. of the BDDT SAMs as long as the mol. had a planar conformation in the resp. SAM. The deviation from this conformation resulted in the deterioration of the film quality and a decrease of the orientational order. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2Application of 29364-29-2).
Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Application of 29364-29-2
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts