“…A special interest is that of polymers with direct charge transport properties which can therefore serve as redox mediators (Boguslavsky et al, 1995;Hodak, Etchenique, Calvo, Singhal, & Bartlett, 1997;Raj & Chakraborty, 2006). One of these electroactive polymer films is synthesised by the electropolymerisation of safranine T (ST) (Pauliukaite, Selskiene, Malinauskas, & Brett, 2009), which has a large heterocyclic conjugated system and contains an electron donor -NH 2 . Since ST is a phenazine compound, the redox mechanism is probably similar to neutral red (Chen & Gao, 2007;Sun, Ye, Zhang, & Zhou, 1998).…”