and sodium polyvinylsulfonate na pvs were purchased from aldrich chem co and used as received bis triphenylphosphoanylidene ammonium polystyrenesulfonate ppn pss was prepared by metathesis of na pss and ppn cl aldrich washed with deionized water and dried under vacuum kevlar goodfellow co 70 filaments with a filament diameter of 0 0167 mm and polyester strings 0 1 mm diameter were used without pretreatment poly 3 mt fibers ten cm in length were grown in the two electrode electrochemical flow cell shown in fig1 a as shown in fig1 a the main body of the cell consists of a glass capillary 3 mm in inner diameter 15 cm in length which is oriented vertically the electrolyte solution is pumped through the cell with a centrifugal pump cole parma model 07002 60 polymer fibers were grown from a pt wire 127 u03bcm in diameter which is encapsulated in glass with about one cm of the wire extending past the glass insulation this electrode is positioned in the center of the capillary about 5 cm from the entrance port a second pt wire 1 u03bcm in diameter and about 2 cm long is positioned at the bottom of the tube near the exit port forming a flow chamber about 10 cm in length the electrolyte solution consisted of acetonitrile ch 3 cn containing 0 5m 3 mt and 0.