A Clay-hemicyanine Derivative Hybrid Monolayer Fabricated at an Air-water Interface(Physical and Chemical Properties of Clays,Proceedings of the 13^<th> International Clay Conference)

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A simple means for fabricating a clay/cationic organic molecule hybrid monolayer is proposed. A chloroform solution of a hemicyanine derivative was spread onto a suspension of sodium montmorillonite. Then the hybrid film formed was deposited onto a substrate without any compression process onto a substrate. The obtained films were characterized by using atomic force microscopy and UV-vis spectroscopy. As a result, it was found that a hybrid film similar to a clay-organic hybrid Langmuir-Blodgett (LB) film was formed even when this means was applied. The optical second harmonic generation measurement revealed that the hemicyanine derivative molecules in the film were highly oriented. It is known that the fabrication of a hemicyanine dye LB film with a highly oriented hemicyanine dye array requires a long time. By utilizing this means, we have demonstrated that a film with a highly oriented molecular array can be fabricated in a considerably shorter time than employing conventional LB technique.
日本粘土学会の論文