Disruption of the Electrical Conductivity of Highly Conductive Poly(3,4-ethylenedioxythiophene):Poly(styrene sulfonate) by Hypochlorite

作者：Oostra A Jolt; van den Bos Karel H W; Blom Paul W M; Michels Jasper J^*

来源：Journal of Physical Chemistry B, 2013, 117(37): 10929-10935.

DOI：10.1021/jp4050836

The effect of hypochlorite treatment on the layer thickness and conductivity of a state-of-the-art high conducting poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is investigated as a function of exposure time and hypochlorite concentration. Because of overoxidation by the hypochlorite the PEDOT:PSS conductivity is decreased by 10 orders of magnitude. Comparison of thickness and conductivity as a function of time shows that a residual insulating layer remains on the substrate upon treatment. Going from a low (%26lt;0.01%) to a high (%26gt;0.1%) hypochlorite concentration the interaction between PEDOT: PSS and hypochlorite changes from reaction-to diffusion limited. The decrease in conductivity can be interpreted in terms of the interruption of percolating conductive pathways by the reaction between PEDOT and hypochlorite.

• 出版日期2013-9-19