Electric current during electrophoretic deposition of conjugated polymer

The electric current during the electrophoretic deposition of a conjugated polymer based on polyfluorene has been studied. Thin slab vessels provide a simple path for the colloidal particles during deposition as well as minimum suspension consumption, and the transient currents during the electrophoretic deposition from a suspension containing 1.0 g l-1 of the polymer in those vessels reveal clear breaks corresponding to the transit time. The electrophoretic mobility of the colloidal particles in the suspension has been estimated to be 7.0 ± 0.6 x 10-5 cm2 V-1 s-1. The deposition of a uniform film of the polymer over a 9 cm-square utilizing the thin slab vessel has also been demonstrated. (fast track communication)