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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Biomaterials. 2008 Mar;29(9):1273–1283. doi: 10.1016/j.biomaterials.2007.11.022

Table 3.

Diffusional parameters for PPy film, PPy NTs, PEDOT film, and PEDOT NTs were electropolymerized on the neural microelectrodes with applied charge density of 1.44 C/cm2 by fitting experimental EIS data to the model in Figure 3. Data are shown for ± standard deviation (N = 10 for each case).

L
(μm)
τT
(ms)
RT
(kΩ)
CT
(μF)
D ×10-6
(cm2/s)
εr
PPy film 10 ± 0.5 34.2 ± 2.6 108.3 ± 5.0 0.32 ± 0.06 29.2 ± 1.1 3.6 ± 0.3
PPy NTs 12 ± 0.4 19.9 ± 1.5 43.9 ± 5.0 0.45 ± 0.12 72.4 ± 3.3 8.6 ± 0.4
PEDOT film 4 ± 0.3 21.6 ± 2.8 23.6 ± 3.6 0.91 ± 0.17 7.4 ± 2.1 3.5 ± 0.3
PEDOT NTs 4.5 ± 0.4 15.6 ± 2.0 12.9 ± 2.5 1.21 ± 0.32 13.0 ± 1.8 7.0 ± 1.5
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