POLY 442 |
| Layer-by-layer (LbL) assembly is used to create thin films (typically < 1mm thick) by alternately exposing a substrate to positively- and negatively-charged molecules or particles in water. In recent years, LbL assemblies containing poly(3,4-ethylenedioxythiophene) (PEDOT) have been heavily studied, but little work has focused on tailoring the electrical conductivity of these thin films. In the present work, the influence of both polycation and dopant on the growth and electrical conductivity of assembled PEDOT films is examined. Doping and choice of polycation have a significant influence on bulk resistivity and film growth for layer-by-layer assemblies made with poly(styrene sulfonate)-doped PEDOT. These films are able to achieve bulk resistivity values below 1 Wcm with a thickness below 100 nm. When combined with transparency greater than 90%, these films may be useful for electrostatic dissipation layers or low conductivity electrodes in film or flexible display applications. |
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Conjugated Polymer Materials and Hybrids: Synthesis, Macromolecular Assemblies, and Nanostructures
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Sci-Mix
Division of Polymer Chemistry |