Authors Wang, M. ; Braun, H.-G. ; Meyer, E.
Title Patterning of Polymeric/Inorganic Nanocomposite and Nanoparticle Layers
Date 03.12.2002
Number 11043
Abstract Polymeric/inorganic nanocomposite dishes of hydrolyzed poly(styrene-alt-maleic anhydride) (HSMA) and TiO2 were patterned on substrates by microcontact printing (CP) of the dispersions of nanosized TiO2 colloidal particles in HSMA solutions; the structure formation with respect to the CP process was discussed. The orderly arranged HSMA/TiO2 dishes are homogeneous in size. After removal of the polymer in the printed composite dishes by calcination, well-defined nanostructured TiO2 layers are formed in the regions where the composite dishes appear. The printed composite dishes come from the dishlike composite aggregates transferred onto a substrate from a stamp surface. The drying of the dispersion droplets formed in a topographically controlled de-wetting of the dispersion on the stamp surface results in the dishlike aggregates, for which the pinning of the droplet contact line is of key importance. The diameter of the printed dishes is mainly determined by the stamp geometry, and not influenced remarkably by HSMA and/or TiO2 concentrations. The component fractions mainly influence the heights of the dish rim and plate, the width of the dish rim, and the continuity of the plate within the rim.
Publisher Chemistry of Materials
Citation Chemistry of Materials 14 (2002) 4812-4818
Tags MBC_Structure_Formation

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