Abstract
A comparative study on polyfluorene (PFl) growth has been carried out in dichloromethane and acetonitrile solutions employing cyclic voltammetry, kinetic measurements, electrochemical quartz crystal microbalance (EQCM) and in situ spectroelectrochemical techniques. The results indicate that fluorene is polymerized more effectively in than in and the PFl films prepared in generally have better physicochemical characteristics than those in The polymerization reaction rates fluctuate due to the passivation/depassivation processes taking place in while they decrease steadily with increasing potential cycle number in EQCM studies show that the current efficiencies are about 100% in while they average about 25% in Spectroelectrochemical studies show that monomers are quickly polymerized to make long-chain oligomers in while the chain lengths are generally shorter for polymers prepared in These differences are attributed to the differences in solvent characteristics such as their dielectric constants, leading to a different solubility of oligomers and different ion stabilization. © 2004 The Electrochemical Society. All rights reserved.
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