Fig. 2: Electronic properties of the PEDOT:PSS96-b-PNIPAM440 TR-CP.
From: Thermo-reversible gelation of self-assembled conducting polymer colloids
a Bode plot obtained by EIS showing the effect of PEDOT loading on the impedance of the gels (3.6 wt% in DI water). The TR-CP with SS:NIPAM:EDOT ratio of 3.5:16:1 showed the lowest impedance. b Nyquist plot of the TR-CP with SS:NIPAM:EDOT ratio of 3.5:16:1. c Equivalent circuit model used to fit the EIS data and obtain ionic (Ri) and electronic (Re) resistance. Rc is the resistance from the set-up, Cg is a constant phase element and Qdl is a double-layer capacitor. d Photograph showing an LED circuit completed with a TR-CP gel (SS:NIPAM:EDOT ratio of 3.5:16:1, 3.6 wt% in DI water). e Effect of TR-CP concentration in PBS (pH = 4) on the impedance magnitude. The TR-CP was lyophilized and re-dispersed at given concentrations in PBS. f Nyquist plot for the TR-CP at 5.6 wt% in PBS (pH = 4). This formulation shows the highest conductivity among all the TR-CP samples. g Change in resistance (2-point probe DC measurements) as a function of temperature of the TR-CP (5.6 wt% in PBS, pH = 4) for a sample volume of 0.4 cm3.
