Synthesis,characterization and fungicidal activity of zinc diethyldithiocarbamate and phosphate |
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Authors: | H. S. Rathore G. Varshney S. C. Mojumdar M. T. Saleh |
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Affiliation: | (1) Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University Hachiouji, Tokyo 192-0397, Japan;(2) CREST (JST), Kawaguchi, Japan |
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Abstract: | Monolayers of amphiphilic di-block copolymer, PEO40-b-PMA(Az)19 on water surface and solid surfaces, such as silicon wafer and quartz glass, were analyzed by surface pressure — molecular area (π-A) isotherm, UV-Vis spectroscopy, atomic force microscopy (AFM) and total X-ray reflectivity (TXR). The monolayer prepared at 22 mN m-1 consisted of H aggregated azobezene (Az) moieties, which orientated perpendicular to the solid surface. The monolayer structure, including H aggregated Az and orientation of Az, was stable after annealing at 98°C, at which temperature the hydrophilic PEO domain was the liquid phase and the hydrophobic PMA(Az) was in the smectic A phase. |
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Keywords: | amphiphilic di-block copolymer azobenzene H aggregation monolayer morphology orientation total X-ray reflectivity |
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