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Caption : (a) frequency response of conductivity data (bode plot) of pani-es synthesized at various polymerization temperature.

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Caption : (b) schematic illustration how to calculate the free electron’s total density from the frequency response of conductivity data (bode plot) using equation 3.

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Caption : crystallite size of pani-es synthesized at various polymerization temperature along the [110] direction determined using scherrer equation (<i>k</i> = 0.94, λ = 0.15418)<sup>[1,2]</sup>.