Table 1. A compilation of redox potentials obtained by square wave voltammetry of cross-linked pyrene-LPEI films containing 80 μg of protein per film. The same protein/hydrogel film preparation procedure was used for all proteins studied, and films were coated onto 0.25 cm² Toray electrode without the addition of CNTs.

Enzyme	Cofactor	pH	Redox potential, E/V vs. SCE
			This work	Literature	Ref.
Laccase	Cu-l	4.5	–0.615 ± 0.007	–0.556	25
Cytochrome C	Heme	7.0	–0.200 ± 0.006	–0.174	38
MoFe protein (nitrogenase)	P-Cluster [8Fe–7S]	7.0	–0.512 ± 0.008	–0.544	39
Ferredoxin	[2Fe–2S]	7.0	–0.583 ± 0.003	–0.609	38
Flavodoxin	FMN	7.0	–0.727 ± 0.008	–0.688	40
Free FMN	FMN	7.0	–0.437 ± 0.003	–0.462	40