Self-Assembled Monolayers of Alkylammonium Ions on Mica: Direct Determination of the Orientation of the Alkyl Chains

Solvent dependence of the molecular order in ion-exchanged self-assembled dialkylammonium monolayers on mica studied with soft X-ray absorption

“…Note that films prepared from hot aqueous solutions showed actually a slightly higher degree of order [20] than those prepared from water at room temperature in this study. It should also be noted that a number of factors influence the final state of the layers formed by ion exchange.…”

“…There are several features observable. The rather broad signal labeled 1 is due to second-order intensity from oxygen of the mica [20]. The small peak labeled 2 at 285 eV is due to carbon inclusions in the mica substrate [30].…”

“…The small peak labeled 2 at 285 eV is due to carbon inclusions in the mica substrate [30]. The signal labeled 3 is related to transitions into C-H orbitals of the alkyl chains, feature 4 is indicative of the C-C bond, and 5 is the signal from the potassium 2p [20].…”

“…Heating an aqueous solution to 70 • C improves the solubility and can produce highly ordered films [20]. However, other groups have reported that best results are obtained by cooling the aqueous solution down to 5 • C [10].…”

Electrical tree propagation along mica barriers in dependence on the resin components

“…The ion exchange took place in deionized water, to which the chloride salts of the ions mentioned above were added. The concentration of the ODTMA ions in water was 104 mol/l [23]. The modification of the mica surface after the exchange of the potassium ions for ODTMA ions is observed by the change in wettability after the ion exchange [21].…”