The electrodeposition of poly-N-methylpyrrole films from aqueous solutions

Terthiophene-promoted electropolymerization of 3-methylthiophene is heterogeneous electrocatalysis of polyterthiophene. A general electrocatalytic mechanism

“…The results account for a large number of previous experimental observations in electrodeposition of conducting polymers [26]. Phenomena such as (1) trace-crossing in the initial CV; (2) progressive ease of polymerization (current increase at a fixed potential) with progress of the deposition; (3) lowering of CV peak potential for oxidation on predeposited films; (4) appearance of CV oxidation peaks preceding monomer oxidation on the bare electrode etc., which were previously explained tentatively with generic nucleation-and-growth processes mimicking metal deposition [27,28] or with monomer adsorption on the bare metal [27,29], have found here a common and, in our opinion, more reasonable explanation.…”

Electrochemistry of Poly(3,4‐alkylenedioxythiophene) Derivatives

“…The backsweep of the CV shows two reduction peaks around ±0.2 V and ±0.5 V corresponding to the reduction of the initially deposited polymer and evidence for the nucleation process on the surface of the electrode. [16] By repetitively sweeping between negative potentials and E ox peak,m , the polymer's redox system appears in the range of ±0.7 V to ±0.4 V (see Fig. 1B) as polymer coats the electrode.…”

Electrochemical Relaxation Study of Polythiophene as Conducting Polymer (Ii)

“…In chronoamperometric deposition, following the initial spike, the current falls to a minimum and then rises to a plateau [20]. This feature together with the current cross-over in the potentiodynamic technique during polymer deposition under swept potential control [21] is typical of deposition through a nucleation and growth mechanism [24][25][26][27]. The concentration of the monomer was varied according to the polymerization technique.…”