Experimental Instruments Nuclear magnetic resonance (NMR) spectra were obtained on Bruker Avance DMX500 MHz spectrometer. Gel permeation chromatography (GPC, 135 °C in 1,2,4-trichlorobenzene) was performed on a Polymer Laboratories PL220 Chromatograph. Differential scanning calorimetry (DSC) was determined by a TA Instruments DSC (Model Q-20) with about 5 mg polymers samples at a rate of 10 °C / min in the temperature range of -20 to 300 °C. Cyclic voltammetry (CV) measurements were conducted

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... ing a standard three-electrode configuration under an argon atmosphere. A three-electrode cell equipped with a glassy carbon working electrode, a Ag wire reference electrode, and a Pt wire counterelectrode was employed. The measurements were performed in absolute acetonitrile with tetrabutylammonium hexafluorophosphate (0.1 M) as the supporting electrolyte at a scan rate of 50-100 mV/s. Polymer films for CV test were drop-casted onto the glassy carbon working electrode from a 2 mg/mL chloroform solution. The absolute energy level of ferrocene/ferrocenium (Fc/Fc + ) to be 4.8 eV below vacuum. Ultraviolet-Visible (UV-Vis) absorption spectra were recorded on a Shimadzu UV-2401 diode array spectrometer. Atomic force microscopy (AFM) images were measured using a Innova scanning probe microscope (Veeco). Silicon probes with resonant frequencies of 75 KHz (Budget Sensors) were used for tapping mode AFM Electronic Supplementary Material (ESI) for Chemical Communications This journal is