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| - Template Syntheses of Polypyrrole Nanowires and CdSNanoparticles in Porous Polymer Monoliths
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| - TEM micrographs of (left) polypyrrole nanowires and (right) CdS nanoparticles synthesized within monolithic nanoporous polymer templates prepared from ordered block copolymer precursors.
- Template synthesis is a powerful method for the preparation of nanoscale materials withspecific size and shape. We describe the template synthesis of polypyrrole nanowires andCdS nanoparticles within monolithic nanoporous polymer templates prepared from orderedblock copolymer precursors. SAXS measurements confirmed retention of the host structureafter growth of the nanomaterials within the pores of the template. SEM and TEM wereused for direct visualization of the size and shape of the templated materials both in themonolith as well as after removal of the template through dissolution. The size of thetemplated nanomaterials matched that of the template pores and was modifiable by usingtemplates containing different pore dimensions. For the case of CdS nanoparticles, WAXSwas also used to verify particle size and crystal structure. In an effort to impregnate thenanoporous monoliths with CdS particles smaller than the pore dimensions of the template,a synthetic protocol utilizing a capping agent was employed. These particles were shown toexhibit a quantum size effect by DR−UV−Vis.
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